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f-stack/dpdk/drivers/event/dlb2/pf/base/dlb2_resource.c

6028 lines
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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2016-2020 Intel Corporation
*/
#include "dlb2_user.h"
#include "dlb2_hw_types.h"
#include "dlb2_mbox.h"
#include "dlb2_osdep.h"
#include "dlb2_osdep_bitmap.h"
#include "dlb2_osdep_types.h"
#include "dlb2_regs.h"
#include "dlb2_resource.h"
#include "../../dlb2_priv.h"
#include "../../dlb2_inline_fns.h"
#define DLB2_DOM_LIST_HEAD(head, type) \
DLB2_LIST_HEAD((head), type, domain_list)
#define DLB2_FUNC_LIST_HEAD(head, type) \
DLB2_LIST_HEAD((head), type, func_list)
#define DLB2_DOM_LIST_FOR(head, ptr, iter) \
DLB2_LIST_FOR_EACH(head, ptr, domain_list, iter)
#define DLB2_FUNC_LIST_FOR(head, ptr, iter) \
DLB2_LIST_FOR_EACH(head, ptr, func_list, iter)
#define DLB2_DOM_LIST_FOR_SAFE(head, ptr, ptr_tmp, it, it_tmp) \
DLB2_LIST_FOR_EACH_SAFE((head), ptr, ptr_tmp, domain_list, it, it_tmp)
#define DLB2_FUNC_LIST_FOR_SAFE(head, ptr, ptr_tmp, it, it_tmp) \
DLB2_LIST_FOR_EACH_SAFE((head), ptr, ptr_tmp, func_list, it, it_tmp)
static void dlb2_init_domain_rsrc_lists(struct dlb2_hw_domain *domain)
{
int i;
dlb2_list_init_head(&domain->used_ldb_queues);
dlb2_list_init_head(&domain->used_dir_pq_pairs);
dlb2_list_init_head(&domain->avail_ldb_queues);
dlb2_list_init_head(&domain->avail_dir_pq_pairs);
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++)
dlb2_list_init_head(&domain->used_ldb_ports[i]);
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++)
dlb2_list_init_head(&domain->avail_ldb_ports[i]);
}
static void dlb2_init_fn_rsrc_lists(struct dlb2_function_resources *rsrc)
{
int i;
dlb2_list_init_head(&rsrc->avail_domains);
dlb2_list_init_head(&rsrc->used_domains);
dlb2_list_init_head(&rsrc->avail_ldb_queues);
dlb2_list_init_head(&rsrc->avail_dir_pq_pairs);
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++)
dlb2_list_init_head(&rsrc->avail_ldb_ports[i]);
}
void dlb2_hw_enable_sparse_dir_cq_mode(struct dlb2_hw *hw)
{
union dlb2_chp_cfg_chp_csr_ctrl r0;
r0.val = DLB2_CSR_RD(hw, DLB2_CHP_CFG_CHP_CSR_CTRL);
r0.field.cfg_64bytes_qe_dir_cq_mode = 1;
DLB2_CSR_WR(hw, DLB2_CHP_CFG_CHP_CSR_CTRL, r0.val);
}
int dlb2_hw_get_num_resources(struct dlb2_hw *hw,
struct dlb2_get_num_resources_args *arg,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_function_resources *rsrcs;
struct dlb2_bitmap *map;
int i;
if (vdev_req && vdev_id >= DLB2_MAX_NUM_VDEVS)
return -EINVAL;
if (vdev_req)
rsrcs = &hw->vdev[vdev_id];
else
rsrcs = &hw->pf;
arg->num_sched_domains = rsrcs->num_avail_domains;
arg->num_ldb_queues = rsrcs->num_avail_ldb_queues;
arg->num_ldb_ports = 0;
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++)
arg->num_ldb_ports += rsrcs->num_avail_ldb_ports[i];
arg->num_cos_ldb_ports[0] = rsrcs->num_avail_ldb_ports[0];
arg->num_cos_ldb_ports[1] = rsrcs->num_avail_ldb_ports[1];
arg->num_cos_ldb_ports[2] = rsrcs->num_avail_ldb_ports[2];
arg->num_cos_ldb_ports[3] = rsrcs->num_avail_ldb_ports[3];
arg->num_dir_ports = rsrcs->num_avail_dir_pq_pairs;
arg->num_atomic_inflights = rsrcs->num_avail_aqed_entries;
map = rsrcs->avail_hist_list_entries;
arg->num_hist_list_entries = dlb2_bitmap_count(map);
arg->max_contiguous_hist_list_entries =
dlb2_bitmap_longest_set_range(map);
arg->num_ldb_credits = rsrcs->num_avail_qed_entries;
arg->num_dir_credits = rsrcs->num_avail_dqed_entries;
return 0;
}
void dlb2_hw_enable_sparse_ldb_cq_mode(struct dlb2_hw *hw)
{
union dlb2_chp_cfg_chp_csr_ctrl r0;
r0.val = DLB2_CSR_RD(hw, DLB2_CHP_CFG_CHP_CSR_CTRL);
r0.field.cfg_64bytes_qe_ldb_cq_mode = 1;
DLB2_CSR_WR(hw, DLB2_CHP_CFG_CHP_CSR_CTRL, r0.val);
}
void dlb2_resource_free(struct dlb2_hw *hw)
{
int i;
if (hw->pf.avail_hist_list_entries)
dlb2_bitmap_free(hw->pf.avail_hist_list_entries);
for (i = 0; i < DLB2_MAX_NUM_VDEVS; i++) {
if (hw->vdev[i].avail_hist_list_entries)
dlb2_bitmap_free(hw->vdev[i].avail_hist_list_entries);
}
}
int dlb2_resource_init(struct dlb2_hw *hw)
{
struct dlb2_list_entry *list;
unsigned int i;
int ret;
/*
* For optimal load-balancing, ports that map to one or more QIDs in
* common should not be in numerical sequence. This is application
* dependent, but the driver interleaves port IDs as much as possible
* to reduce the likelihood of this. This initial allocation maximizes
* the average distance between an ID and its immediate neighbors (i.e.
* the distance from 1 to 0 and to 2, the distance from 2 to 1 and to
* 3, etc.).
*/
u8 init_ldb_port_allocation[DLB2_MAX_NUM_LDB_PORTS] = {
0, 7, 14, 5, 12, 3, 10, 1, 8, 15, 6, 13, 4, 11, 2, 9,
16, 23, 30, 21, 28, 19, 26, 17, 24, 31, 22, 29, 20, 27, 18, 25,
32, 39, 46, 37, 44, 35, 42, 33, 40, 47, 38, 45, 36, 43, 34, 41,
48, 55, 62, 53, 60, 51, 58, 49, 56, 63, 54, 61, 52, 59, 50, 57,
};
/* Zero-out resource tracking data structures */
memset(&hw->rsrcs, 0, sizeof(hw->rsrcs));
memset(&hw->pf, 0, sizeof(hw->pf));
dlb2_init_fn_rsrc_lists(&hw->pf);
for (i = 0; i < DLB2_MAX_NUM_VDEVS; i++) {
memset(&hw->vdev[i], 0, sizeof(hw->vdev[i]));
dlb2_init_fn_rsrc_lists(&hw->vdev[i]);
}
for (i = 0; i < DLB2_MAX_NUM_DOMAINS; i++) {
memset(&hw->domains[i], 0, sizeof(hw->domains[i]));
dlb2_init_domain_rsrc_lists(&hw->domains[i]);
hw->domains[i].parent_func = &hw->pf;
}
/* Give all resources to the PF driver */
hw->pf.num_avail_domains = DLB2_MAX_NUM_DOMAINS;
for (i = 0; i < hw->pf.num_avail_domains; i++) {
list = &hw->domains[i].func_list;
dlb2_list_add(&hw->pf.avail_domains, list);
}
hw->pf.num_avail_ldb_queues = DLB2_MAX_NUM_LDB_QUEUES;
for (i = 0; i < hw->pf.num_avail_ldb_queues; i++) {
list = &hw->rsrcs.ldb_queues[i].func_list;
dlb2_list_add(&hw->pf.avail_ldb_queues, list);
}
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++)
hw->pf.num_avail_ldb_ports[i] =
DLB2_MAX_NUM_LDB_PORTS / DLB2_NUM_COS_DOMAINS;
for (i = 0; i < DLB2_MAX_NUM_LDB_PORTS; i++) {
int cos_id = i >> DLB2_NUM_COS_DOMAINS;
struct dlb2_ldb_port *port;
port = &hw->rsrcs.ldb_ports[init_ldb_port_allocation[i]];
dlb2_list_add(&hw->pf.avail_ldb_ports[cos_id],
&port->func_list);
}
hw->pf.num_avail_dir_pq_pairs = DLB2_MAX_NUM_DIR_PORTS;
for (i = 0; i < hw->pf.num_avail_dir_pq_pairs; i++) {
list = &hw->rsrcs.dir_pq_pairs[i].func_list;
dlb2_list_add(&hw->pf.avail_dir_pq_pairs, list);
}
hw->pf.num_avail_qed_entries = DLB2_MAX_NUM_LDB_CREDITS;
hw->pf.num_avail_dqed_entries = DLB2_MAX_NUM_DIR_CREDITS;
hw->pf.num_avail_aqed_entries = DLB2_MAX_NUM_AQED_ENTRIES;
ret = dlb2_bitmap_alloc(&hw->pf.avail_hist_list_entries,
DLB2_MAX_NUM_HIST_LIST_ENTRIES);
if (ret)
goto unwind;
ret = dlb2_bitmap_fill(hw->pf.avail_hist_list_entries);
if (ret)
goto unwind;
for (i = 0; i < DLB2_MAX_NUM_VDEVS; i++) {
ret = dlb2_bitmap_alloc(&hw->vdev[i].avail_hist_list_entries,
DLB2_MAX_NUM_HIST_LIST_ENTRIES);
if (ret)
goto unwind;
ret = dlb2_bitmap_zero(hw->vdev[i].avail_hist_list_entries);
if (ret)
goto unwind;
}
/* Initialize the hardware resource IDs */
for (i = 0; i < DLB2_MAX_NUM_DOMAINS; i++) {
hw->domains[i].id.phys_id = i;
hw->domains[i].id.vdev_owned = false;
}
for (i = 0; i < DLB2_MAX_NUM_LDB_QUEUES; i++) {
hw->rsrcs.ldb_queues[i].id.phys_id = i;
hw->rsrcs.ldb_queues[i].id.vdev_owned = false;
}
for (i = 0; i < DLB2_MAX_NUM_LDB_PORTS; i++) {
hw->rsrcs.ldb_ports[i].id.phys_id = i;
hw->rsrcs.ldb_ports[i].id.vdev_owned = false;
}
for (i = 0; i < DLB2_MAX_NUM_DIR_PORTS; i++) {
hw->rsrcs.dir_pq_pairs[i].id.phys_id = i;
hw->rsrcs.dir_pq_pairs[i].id.vdev_owned = false;
}
for (i = 0; i < DLB2_MAX_NUM_SEQUENCE_NUMBER_GROUPS; i++) {
hw->rsrcs.sn_groups[i].id = i;
/* Default mode (0) is 64 sequence numbers per queue */
hw->rsrcs.sn_groups[i].mode = 0;
hw->rsrcs.sn_groups[i].sequence_numbers_per_queue = 64;
hw->rsrcs.sn_groups[i].slot_use_bitmap = 0;
}
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++)
hw->cos_reservation[i] = 100 / DLB2_NUM_COS_DOMAINS;
return 0;
unwind:
dlb2_resource_free(hw);
return ret;
}
void dlb2_clr_pmcsr_disable(struct dlb2_hw *hw)
{
union dlb2_cfg_mstr_cfg_pm_pmcsr_disable r0;
r0.val = DLB2_CSR_RD(hw, DLB2_CFG_MSTR_CFG_PM_PMCSR_DISABLE);
r0.field.disable = 0;
DLB2_CSR_WR(hw, DLB2_CFG_MSTR_CFG_PM_PMCSR_DISABLE, r0.val);
}
static void dlb2_configure_domain_credits(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
union dlb2_chp_cfg_ldb_vas_crd r0 = { {0} };
union dlb2_chp_cfg_dir_vas_crd r1 = { {0} };
r0.field.count = domain->num_ldb_credits;
DLB2_CSR_WR(hw, DLB2_CHP_CFG_LDB_VAS_CRD(domain->id.phys_id), r0.val);
r1.field.count = domain->num_dir_credits;
DLB2_CSR_WR(hw, DLB2_CHP_CFG_DIR_VAS_CRD(domain->id.phys_id), r1.val);
}
static struct dlb2_ldb_port *
dlb2_get_next_ldb_port(struct dlb2_hw *hw,
struct dlb2_function_resources *rsrcs,
u32 domain_id,
u32 cos_id)
{
struct dlb2_list_entry *iter;
struct dlb2_ldb_port *port;
RTE_SET_USED(iter);
/*
* To reduce the odds of consecutive load-balanced ports mapping to the
* same queue(s), the driver attempts to allocate ports whose neighbors
* are owned by a different domain.
*/
DLB2_FUNC_LIST_FOR(rsrcs->avail_ldb_ports[cos_id], port, iter) {
u32 next, prev;
u32 phys_id;
phys_id = port->id.phys_id;
next = phys_id + 1;
prev = phys_id - 1;
if (phys_id == DLB2_MAX_NUM_LDB_PORTS - 1)
next = 0;
if (phys_id == 0)
prev = DLB2_MAX_NUM_LDB_PORTS - 1;
if (!hw->rsrcs.ldb_ports[next].owned ||
hw->rsrcs.ldb_ports[next].domain_id.phys_id == domain_id)
continue;
if (!hw->rsrcs.ldb_ports[prev].owned ||
hw->rsrcs.ldb_ports[prev].domain_id.phys_id == domain_id)
continue;
return port;
}
/*
* Failing that, the driver looks for a port with one neighbor owned by
* a different domain and the other unallocated.
*/
DLB2_FUNC_LIST_FOR(rsrcs->avail_ldb_ports[cos_id], port, iter) {
u32 next, prev;
u32 phys_id;
phys_id = port->id.phys_id;
next = phys_id + 1;
prev = phys_id - 1;
if (phys_id == DLB2_MAX_NUM_LDB_PORTS - 1)
next = 0;
if (phys_id == 0)
prev = DLB2_MAX_NUM_LDB_PORTS - 1;
if (!hw->rsrcs.ldb_ports[prev].owned &&
hw->rsrcs.ldb_ports[next].owned &&
hw->rsrcs.ldb_ports[next].domain_id.phys_id != domain_id)
return port;
if (!hw->rsrcs.ldb_ports[next].owned &&
hw->rsrcs.ldb_ports[prev].owned &&
hw->rsrcs.ldb_ports[prev].domain_id.phys_id != domain_id)
return port;
}
/*
* Failing that, the driver looks for a port with both neighbors
* unallocated.
*/
DLB2_FUNC_LIST_FOR(rsrcs->avail_ldb_ports[cos_id], port, iter) {
u32 next, prev;
u32 phys_id;
phys_id = port->id.phys_id;
next = phys_id + 1;
prev = phys_id - 1;
if (phys_id == DLB2_MAX_NUM_LDB_PORTS - 1)
next = 0;
if (phys_id == 0)
prev = DLB2_MAX_NUM_LDB_PORTS - 1;
if (!hw->rsrcs.ldb_ports[prev].owned &&
!hw->rsrcs.ldb_ports[next].owned)
return port;
}
/* If all else fails, the driver returns the next available port. */
return DLB2_FUNC_LIST_HEAD(rsrcs->avail_ldb_ports[cos_id],
typeof(*port));
}
static int __dlb2_attach_ldb_ports(struct dlb2_hw *hw,
struct dlb2_function_resources *rsrcs,
struct dlb2_hw_domain *domain,
u32 num_ports,
u32 cos_id,
struct dlb2_cmd_response *resp)
{
unsigned int i;
if (rsrcs->num_avail_ldb_ports[cos_id] < num_ports) {
resp->status = DLB2_ST_LDB_PORTS_UNAVAILABLE;
return -EINVAL;
}
for (i = 0; i < num_ports; i++) {
struct dlb2_ldb_port *port;
port = dlb2_get_next_ldb_port(hw, rsrcs,
domain->id.phys_id, cos_id);
if (port == NULL) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: domain validation failed\n",
__func__);
return -EFAULT;
}
dlb2_list_del(&rsrcs->avail_ldb_ports[cos_id],
&port->func_list);
port->domain_id = domain->id;
port->owned = true;
dlb2_list_add(&domain->avail_ldb_ports[cos_id],
&port->domain_list);
}
rsrcs->num_avail_ldb_ports[cos_id] -= num_ports;
return 0;
}
static int dlb2_attach_ldb_ports(struct dlb2_hw *hw,
struct dlb2_function_resources *rsrcs,
struct dlb2_hw_domain *domain,
struct dlb2_create_sched_domain_args *args,
struct dlb2_cmd_response *resp)
{
unsigned int i, j;
int ret;
if (args->cos_strict) {
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
u32 num = args->num_cos_ldb_ports[i];
/* Allocate ports from specific classes-of-service */
ret = __dlb2_attach_ldb_ports(hw,
rsrcs,
domain,
num,
i,
resp);
if (ret)
return ret;
}
} else {
unsigned int k;
u32 cos_id;
/*
* Attempt to allocate from specific class-of-service, but
* fallback to the other classes if that fails.
*/
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
for (j = 0; j < args->num_cos_ldb_ports[i]; j++) {
for (k = 0; k < DLB2_NUM_COS_DOMAINS; k++) {
cos_id = (i + k) % DLB2_NUM_COS_DOMAINS;
ret = __dlb2_attach_ldb_ports(hw,
rsrcs,
domain,
1,
cos_id,
resp);
if (ret == 0)
break;
}
if (ret < 0)
return ret;
}
}
}
/* Allocate num_ldb_ports from any class-of-service */
for (i = 0; i < args->num_ldb_ports; i++) {
for (j = 0; j < DLB2_NUM_COS_DOMAINS; j++) {
ret = __dlb2_attach_ldb_ports(hw,
rsrcs,
domain,
1,
j,
resp);
if (ret == 0)
break;
}
if (ret < 0)
return ret;
}
return 0;
}
static int dlb2_attach_dir_ports(struct dlb2_hw *hw,
struct dlb2_function_resources *rsrcs,
struct dlb2_hw_domain *domain,
u32 num_ports,
struct dlb2_cmd_response *resp)
{
unsigned int i;
if (rsrcs->num_avail_dir_pq_pairs < num_ports) {
resp->status = DLB2_ST_DIR_PORTS_UNAVAILABLE;
return -EINVAL;
}
for (i = 0; i < num_ports; i++) {
struct dlb2_dir_pq_pair *port;
port = DLB2_FUNC_LIST_HEAD(rsrcs->avail_dir_pq_pairs,
typeof(*port));
if (port == NULL) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: domain validation failed\n",
__func__);
return -EFAULT;
}
dlb2_list_del(&rsrcs->avail_dir_pq_pairs, &port->func_list);
port->domain_id = domain->id;
port->owned = true;
dlb2_list_add(&domain->avail_dir_pq_pairs, &port->domain_list);
}
rsrcs->num_avail_dir_pq_pairs -= num_ports;
return 0;
}
static int dlb2_attach_ldb_credits(struct dlb2_function_resources *rsrcs,
struct dlb2_hw_domain *domain,
u32 num_credits,
struct dlb2_cmd_response *resp)
{
if (rsrcs->num_avail_qed_entries < num_credits) {
resp->status = DLB2_ST_LDB_CREDITS_UNAVAILABLE;
return -EINVAL;
}
rsrcs->num_avail_qed_entries -= num_credits;
domain->num_ldb_credits += num_credits;
return 0;
}
static int dlb2_attach_dir_credits(struct dlb2_function_resources *rsrcs,
struct dlb2_hw_domain *domain,
u32 num_credits,
struct dlb2_cmd_response *resp)
{
if (rsrcs->num_avail_dqed_entries < num_credits) {
resp->status = DLB2_ST_DIR_CREDITS_UNAVAILABLE;
return -EINVAL;
}
rsrcs->num_avail_dqed_entries -= num_credits;
domain->num_dir_credits += num_credits;
return 0;
}
static int dlb2_attach_atomic_inflights(struct dlb2_function_resources *rsrcs,
struct dlb2_hw_domain *domain,
u32 num_atomic_inflights,
struct dlb2_cmd_response *resp)
{
if (rsrcs->num_avail_aqed_entries < num_atomic_inflights) {
resp->status = DLB2_ST_ATOMIC_INFLIGHTS_UNAVAILABLE;
return -EINVAL;
}
rsrcs->num_avail_aqed_entries -= num_atomic_inflights;
domain->num_avail_aqed_entries += num_atomic_inflights;
return 0;
}
static int
dlb2_attach_domain_hist_list_entries(struct dlb2_function_resources *rsrcs,
struct dlb2_hw_domain *domain,
u32 num_hist_list_entries,
struct dlb2_cmd_response *resp)
{
struct dlb2_bitmap *bitmap;
int base;
if (num_hist_list_entries) {
bitmap = rsrcs->avail_hist_list_entries;
base = dlb2_bitmap_find_set_bit_range(bitmap,
num_hist_list_entries);
if (base < 0)
goto error;
domain->total_hist_list_entries = num_hist_list_entries;
domain->avail_hist_list_entries = num_hist_list_entries;
domain->hist_list_entry_base = base;
domain->hist_list_entry_offset = 0;
dlb2_bitmap_clear_range(bitmap, base, num_hist_list_entries);
}
return 0;
error:
resp->status = DLB2_ST_HIST_LIST_ENTRIES_UNAVAILABLE;
return -EINVAL;
}
static int dlb2_attach_ldb_queues(struct dlb2_hw *hw,
struct dlb2_function_resources *rsrcs,
struct dlb2_hw_domain *domain,
u32 num_queues,
struct dlb2_cmd_response *resp)
{
unsigned int i;
if (rsrcs->num_avail_ldb_queues < num_queues) {
resp->status = DLB2_ST_LDB_QUEUES_UNAVAILABLE;
return -EINVAL;
}
for (i = 0; i < num_queues; i++) {
struct dlb2_ldb_queue *queue;
queue = DLB2_FUNC_LIST_HEAD(rsrcs->avail_ldb_queues,
typeof(*queue));
if (queue == NULL) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: domain validation failed\n",
__func__);
return -EFAULT;
}
dlb2_list_del(&rsrcs->avail_ldb_queues, &queue->func_list);
queue->domain_id = domain->id;
queue->owned = true;
dlb2_list_add(&domain->avail_ldb_queues, &queue->domain_list);
}
rsrcs->num_avail_ldb_queues -= num_queues;
return 0;
}
static int
dlb2_domain_attach_resources(struct dlb2_hw *hw,
struct dlb2_function_resources *rsrcs,
struct dlb2_hw_domain *domain,
struct dlb2_create_sched_domain_args *args,
struct dlb2_cmd_response *resp)
{
int ret;
ret = dlb2_attach_ldb_queues(hw,
rsrcs,
domain,
args->num_ldb_queues,
resp);
if (ret < 0)
return ret;
ret = dlb2_attach_ldb_ports(hw,
rsrcs,
domain,
args,
resp);
if (ret < 0)
return ret;
ret = dlb2_attach_dir_ports(hw,
rsrcs,
domain,
args->num_dir_ports,
resp);
if (ret < 0)
return ret;
ret = dlb2_attach_ldb_credits(rsrcs,
domain,
args->num_ldb_credits,
resp);
if (ret < 0)
return ret;
ret = dlb2_attach_dir_credits(rsrcs,
domain,
args->num_dir_credits,
resp);
if (ret < 0)
return ret;
ret = dlb2_attach_domain_hist_list_entries(rsrcs,
domain,
args->num_hist_list_entries,
resp);
if (ret < 0)
return ret;
ret = dlb2_attach_atomic_inflights(rsrcs,
domain,
args->num_atomic_inflights,
resp);
if (ret < 0)
return ret;
dlb2_configure_domain_credits(hw, domain);
domain->configured = true;
domain->started = false;
rsrcs->num_avail_domains--;
return 0;
}
static int
dlb2_verify_create_sched_dom_args(struct dlb2_function_resources *rsrcs,
struct dlb2_create_sched_domain_args *args,
struct dlb2_cmd_response *resp)
{
u32 num_avail_ldb_ports, req_ldb_ports;
struct dlb2_bitmap *avail_hl_entries;
unsigned int max_contig_hl_range;
int i;
avail_hl_entries = rsrcs->avail_hist_list_entries;
max_contig_hl_range = dlb2_bitmap_longest_set_range(avail_hl_entries);
num_avail_ldb_ports = 0;
req_ldb_ports = 0;
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
num_avail_ldb_ports += rsrcs->num_avail_ldb_ports[i];
req_ldb_ports += args->num_cos_ldb_ports[i];
}
req_ldb_ports += args->num_ldb_ports;
if (rsrcs->num_avail_domains < 1) {
resp->status = DLB2_ST_DOMAIN_UNAVAILABLE;
return -EINVAL;
}
if (rsrcs->num_avail_ldb_queues < args->num_ldb_queues) {
resp->status = DLB2_ST_LDB_QUEUES_UNAVAILABLE;
return -EINVAL;
}
if (req_ldb_ports > num_avail_ldb_ports) {
resp->status = DLB2_ST_LDB_PORTS_UNAVAILABLE;
return -EINVAL;
}
for (i = 0; args->cos_strict && i < DLB2_NUM_COS_DOMAINS; i++) {
if (args->num_cos_ldb_ports[i] >
rsrcs->num_avail_ldb_ports[i]) {
resp->status = DLB2_ST_LDB_PORTS_UNAVAILABLE;
return -EINVAL;
}
}
if (args->num_ldb_queues > 0 && req_ldb_ports == 0) {
resp->status = DLB2_ST_LDB_PORT_REQUIRED_FOR_LDB_QUEUES;
return -EINVAL;
}
if (rsrcs->num_avail_dir_pq_pairs < args->num_dir_ports) {
resp->status = DLB2_ST_DIR_PORTS_UNAVAILABLE;
return -EINVAL;
}
if (rsrcs->num_avail_qed_entries < args->num_ldb_credits) {
resp->status = DLB2_ST_LDB_CREDITS_UNAVAILABLE;
return -EINVAL;
}
if (rsrcs->num_avail_dqed_entries < args->num_dir_credits) {
resp->status = DLB2_ST_DIR_CREDITS_UNAVAILABLE;
return -EINVAL;
}
if (rsrcs->num_avail_aqed_entries < args->num_atomic_inflights) {
resp->status = DLB2_ST_ATOMIC_INFLIGHTS_UNAVAILABLE;
return -EINVAL;
}
if (max_contig_hl_range < args->num_hist_list_entries) {
resp->status = DLB2_ST_HIST_LIST_ENTRIES_UNAVAILABLE;
return -EINVAL;
}
return 0;
}
static void
dlb2_log_create_sched_domain_args(struct dlb2_hw *hw,
struct dlb2_create_sched_domain_args *args,
bool vdev_req,
unsigned int vdev_id)
{
DLB2_HW_DBG(hw, "DLB2 create sched domain arguments:\n");
if (vdev_req)
DLB2_HW_DBG(hw, "(Request from vdev %d)\n", vdev_id);
DLB2_HW_DBG(hw, "\tNumber of LDB queues: %d\n",
args->num_ldb_queues);
DLB2_HW_DBG(hw, "\tNumber of LDB ports (any CoS): %d\n",
args->num_ldb_ports);
DLB2_HW_DBG(hw, "\tNumber of LDB ports (CoS 0): %d\n",
args->num_cos_ldb_ports[0]);
DLB2_HW_DBG(hw, "\tNumber of LDB ports (CoS 1): %d\n",
args->num_cos_ldb_ports[1]);
DLB2_HW_DBG(hw, "\tNumber of LDB ports (CoS 2): %d\n",
args->num_cos_ldb_ports[1]);
DLB2_HW_DBG(hw, "\tNumber of LDB ports (CoS 3): %d\n",
args->num_cos_ldb_ports[1]);
DLB2_HW_DBG(hw, "\tStrict CoS allocation: %d\n",
args->cos_strict);
DLB2_HW_DBG(hw, "\tNumber of DIR ports: %d\n",
args->num_dir_ports);
DLB2_HW_DBG(hw, "\tNumber of ATM inflights: %d\n",
args->num_atomic_inflights);
DLB2_HW_DBG(hw, "\tNumber of hist list entries: %d\n",
args->num_hist_list_entries);
DLB2_HW_DBG(hw, "\tNumber of LDB credits: %d\n",
args->num_ldb_credits);
DLB2_HW_DBG(hw, "\tNumber of DIR credits: %d\n",
args->num_dir_credits);
}
/**
* dlb2_hw_create_sched_domain() - Allocate and initialize a DLB scheduling
* domain and its resources.
* @hw: Contains the current state of the DLB2 hardware.
* @args: User-provided arguments.
* @resp: Response to user.
* @vdev_req: Request came from a virtual device.
* @vdev_id: If vdev_req is true, this contains the virtual device's ID.
*
* Return: returns < 0 on error, 0 otherwise. If the driver is unable to
* satisfy a request, resp->status will be set accordingly.
*/
int dlb2_hw_create_sched_domain(struct dlb2_hw *hw,
struct dlb2_create_sched_domain_args *args,
struct dlb2_cmd_response *resp,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_function_resources *rsrcs;
struct dlb2_hw_domain *domain;
int ret;
rsrcs = (vdev_req) ? &hw->vdev[vdev_id] : &hw->pf;
dlb2_log_create_sched_domain_args(hw, args, vdev_req, vdev_id);
/*
* Verify that hardware resources are available before attempting to
* satisfy the request. This simplifies the error unwinding code.
*/
ret = dlb2_verify_create_sched_dom_args(rsrcs, args, resp);
if (ret)
return ret;
domain = DLB2_FUNC_LIST_HEAD(rsrcs->avail_domains, typeof(*domain));
if (domain == NULL) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: no available domains\n",
__func__, __LINE__);
return -EFAULT;
}
if (domain->configured) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: avail_domains contains configured domains.\n",
__func__);
return -EFAULT;
}
dlb2_init_domain_rsrc_lists(domain);
ret = dlb2_domain_attach_resources(hw, rsrcs, domain, args, resp);
if (ret < 0) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: failed to verify args.\n",
__func__);
return ret;
}
dlb2_list_del(&rsrcs->avail_domains, &domain->func_list);
dlb2_list_add(&rsrcs->used_domains, &domain->func_list);
resp->id = (vdev_req) ? domain->id.virt_id : domain->id.phys_id;
resp->status = 0;
return 0;
}
/*
* The PF driver cannot assume that a register write will affect subsequent HCW
* writes. To ensure a write completes, the driver must read back a CSR. This
* function only need be called for configuration that can occur after the
* domain has started; prior to starting, applications can't send HCWs.
*/
static inline void dlb2_flush_csr(struct dlb2_hw *hw)
{
DLB2_CSR_RD(hw, DLB2_SYS_TOTAL_VAS);
}
static void dlb2_dir_port_cq_disable(struct dlb2_hw *hw,
struct dlb2_dir_pq_pair *port)
{
union dlb2_lsp_cq_dir_dsbl reg;
reg.field.disabled = 1;
DLB2_CSR_WR(hw, DLB2_LSP_CQ_DIR_DSBL(port->id.phys_id), reg.val);
dlb2_flush_csr(hw);
}
static u32 dlb2_dir_cq_token_count(struct dlb2_hw *hw,
struct dlb2_dir_pq_pair *port)
{
union dlb2_lsp_cq_dir_tkn_cnt r0;
r0.val = DLB2_CSR_RD(hw, DLB2_LSP_CQ_DIR_TKN_CNT(port->id.phys_id));
/*
* Account for the initial token count, which is used in order to
* provide a CQ with depth less than 8.
*/
return r0.field.count - port->init_tkn_cnt;
}
static int dlb2_drain_dir_cq(struct dlb2_hw *hw,
struct dlb2_dir_pq_pair *port)
{
unsigned int port_id = port->id.phys_id;
u32 cnt;
/* Return any outstanding tokens */
cnt = dlb2_dir_cq_token_count(hw, port);
if (cnt != 0) {
struct dlb2_hcw hcw_mem[8], *hcw;
void *pp_addr;
pp_addr = os_map_producer_port(hw, port_id, false);
/* Point hcw to a 64B-aligned location */
hcw = (struct dlb2_hcw *)((uintptr_t)&hcw_mem[4] & ~0x3F);
/*
* Program the first HCW for a batch token return and
* the rest as NOOPS
*/
memset(hcw, 0, 4 * sizeof(*hcw));
hcw->cq_token = 1;
hcw->lock_id = cnt - 1;
dlb2_movdir64b(pp_addr, hcw);
os_fence_hcw(hw, pp_addr);
os_unmap_producer_port(hw, pp_addr);
}
return 0;
}
static void dlb2_dir_port_cq_enable(struct dlb2_hw *hw,
struct dlb2_dir_pq_pair *port)
{
union dlb2_lsp_cq_dir_dsbl reg;
reg.field.disabled = 0;
DLB2_CSR_WR(hw, DLB2_LSP_CQ_DIR_DSBL(port->id.phys_id), reg.val);
dlb2_flush_csr(hw);
}
static int dlb2_domain_drain_dir_cqs(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
bool toggle_port)
{
struct dlb2_list_entry *iter;
struct dlb2_dir_pq_pair *port;
int ret;
RTE_SET_USED(iter);
DLB2_DOM_LIST_FOR(domain->used_dir_pq_pairs, port, iter) {
/*
* Can't drain a port if it's not configured, and there's
* nothing to drain if its queue is unconfigured.
*/
if (!port->port_configured || !port->queue_configured)
continue;
if (toggle_port)
dlb2_dir_port_cq_disable(hw, port);
ret = dlb2_drain_dir_cq(hw, port);
if (ret < 0)
return ret;
if (toggle_port)
dlb2_dir_port_cq_enable(hw, port);
}
return 0;
}
static u32 dlb2_dir_queue_depth(struct dlb2_hw *hw,
struct dlb2_dir_pq_pair *queue)
{
union dlb2_lsp_qid_dir_enqueue_cnt r0;
r0.val = DLB2_CSR_RD(hw,
DLB2_LSP_QID_DIR_ENQUEUE_CNT(queue->id.phys_id));
return r0.field.count;
}
static bool dlb2_dir_queue_is_empty(struct dlb2_hw *hw,
struct dlb2_dir_pq_pair *queue)
{
return dlb2_dir_queue_depth(hw, queue) == 0;
}
static bool dlb2_domain_dir_queues_empty(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
struct dlb2_dir_pq_pair *queue;
RTE_SET_USED(iter);
DLB2_DOM_LIST_FOR(domain->used_dir_pq_pairs, queue, iter) {
if (!dlb2_dir_queue_is_empty(hw, queue))
return false;
}
return true;
}
static int dlb2_domain_drain_dir_queues(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
int i, ret;
/* If the domain hasn't been started, there's no traffic to drain */
if (!domain->started)
return 0;
for (i = 0; i < DLB2_MAX_QID_EMPTY_CHECK_LOOPS; i++) {
ret = dlb2_domain_drain_dir_cqs(hw, domain, true);
if (ret < 0)
return ret;
if (dlb2_domain_dir_queues_empty(hw, domain))
break;
}
if (i == DLB2_MAX_QID_EMPTY_CHECK_LOOPS) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: failed to empty queues\n",
__func__);
return -EFAULT;
}
/*
* Drain the CQs one more time. For the queues to go empty, they would
* have scheduled one or more QEs.
*/
ret = dlb2_domain_drain_dir_cqs(hw, domain, true);
if (ret < 0)
return ret;
return 0;
}
static void dlb2_ldb_port_cq_enable(struct dlb2_hw *hw,
struct dlb2_ldb_port *port)
{
union dlb2_lsp_cq_ldb_dsbl reg;
/*
* Don't re-enable the port if a removal is pending. The caller should
* mark this port as enabled (if it isn't already), and when the
* removal completes the port will be enabled.
*/
if (port->num_pending_removals)
return;
reg.field.disabled = 0;
DLB2_CSR_WR(hw, DLB2_LSP_CQ_LDB_DSBL(port->id.phys_id), reg.val);
dlb2_flush_csr(hw);
}
static void dlb2_ldb_port_cq_disable(struct dlb2_hw *hw,
struct dlb2_ldb_port *port)
{
union dlb2_lsp_cq_ldb_dsbl reg;
reg.field.disabled = 1;
DLB2_CSR_WR(hw, DLB2_LSP_CQ_LDB_DSBL(port->id.phys_id), reg.val);
dlb2_flush_csr(hw);
}
static u32 dlb2_ldb_cq_inflight_count(struct dlb2_hw *hw,
struct dlb2_ldb_port *port)
{
union dlb2_lsp_cq_ldb_infl_cnt r0;
r0.val = DLB2_CSR_RD(hw, DLB2_LSP_CQ_LDB_INFL_CNT(port->id.phys_id));
return r0.field.count;
}
static u32 dlb2_ldb_cq_token_count(struct dlb2_hw *hw,
struct dlb2_ldb_port *port)
{
union dlb2_lsp_cq_ldb_tkn_cnt r0;
r0.val = DLB2_CSR_RD(hw, DLB2_LSP_CQ_LDB_TKN_CNT(port->id.phys_id));
/*
* Account for the initial token count, which is used in order to
* provide a CQ with depth less than 8.
*/
return r0.field.token_count - port->init_tkn_cnt;
}
static int dlb2_drain_ldb_cq(struct dlb2_hw *hw, struct dlb2_ldb_port *port)
{
u32 infl_cnt, tkn_cnt;
unsigned int i;
infl_cnt = dlb2_ldb_cq_inflight_count(hw, port);
tkn_cnt = dlb2_ldb_cq_token_count(hw, port);
if (infl_cnt || tkn_cnt) {
struct dlb2_hcw hcw_mem[8], *hcw;
void *pp_addr;
pp_addr = os_map_producer_port(hw, port->id.phys_id, true);
/* Point hcw to a 64B-aligned location */
hcw = (struct dlb2_hcw *)((uintptr_t)&hcw_mem[4] & ~0x3F);
/*
* Program the first HCW for a completion and token return and
* the other HCWs as NOOPS
*/
memset(hcw, 0, 4 * sizeof(*hcw));
hcw->qe_comp = (infl_cnt > 0);
hcw->cq_token = (tkn_cnt > 0);
hcw->lock_id = tkn_cnt - 1;
/* Return tokens in the first HCW */
dlb2_movdir64b(pp_addr, hcw);
hcw->cq_token = 0;
/* Issue remaining completions (if any) */
for (i = 1; i < infl_cnt; i++)
dlb2_movdir64b(pp_addr, hcw);
os_fence_hcw(hw, pp_addr);
os_unmap_producer_port(hw, pp_addr);
}
return 0;
}
static int dlb2_domain_drain_ldb_cqs(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
bool toggle_port)
{
struct dlb2_list_entry *iter;
struct dlb2_ldb_port *port;
int ret, i;
RTE_SET_USED(iter);
/* If the domain hasn't been started, there's no traffic to drain */
if (!domain->started)
return 0;
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
DLB2_DOM_LIST_FOR(domain->used_ldb_ports[i], port, iter) {
if (toggle_port)
dlb2_ldb_port_cq_disable(hw, port);
ret = dlb2_drain_ldb_cq(hw, port);
if (ret < 0)
return ret;
if (toggle_port)
dlb2_ldb_port_cq_enable(hw, port);
}
}
return 0;
}
static u32 dlb2_ldb_queue_depth(struct dlb2_hw *hw,
struct dlb2_ldb_queue *queue)
{
union dlb2_lsp_qid_aqed_active_cnt r0;
union dlb2_lsp_qid_atm_active r1;
union dlb2_lsp_qid_ldb_enqueue_cnt r2;
r0.val = DLB2_CSR_RD(hw,
DLB2_LSP_QID_AQED_ACTIVE_CNT(queue->id.phys_id));
r1.val = DLB2_CSR_RD(hw,
DLB2_LSP_QID_ATM_ACTIVE(queue->id.phys_id));
r2.val = DLB2_CSR_RD(hw,
DLB2_LSP_QID_LDB_ENQUEUE_CNT(queue->id.phys_id));
return r0.field.count + r1.field.count + r2.field.count;
}
static bool dlb2_ldb_queue_is_empty(struct dlb2_hw *hw,
struct dlb2_ldb_queue *queue)
{
return dlb2_ldb_queue_depth(hw, queue) == 0;
}
static bool dlb2_domain_mapped_queues_empty(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
struct dlb2_ldb_queue *queue;
RTE_SET_USED(iter);
DLB2_DOM_LIST_FOR(domain->used_ldb_queues, queue, iter) {
if (queue->num_mappings == 0)
continue;
if (!dlb2_ldb_queue_is_empty(hw, queue))
return false;
}
return true;
}
static int dlb2_domain_drain_mapped_queues(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
int i, ret;
/* If the domain hasn't been started, there's no traffic to drain */
if (!domain->started)
return 0;
if (domain->num_pending_removals > 0) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: failed to unmap domain queues\n",
__func__);
return -EFAULT;
}
for (i = 0; i < DLB2_MAX_QID_EMPTY_CHECK_LOOPS; i++) {
ret = dlb2_domain_drain_ldb_cqs(hw, domain, true);
if (ret < 0)
return ret;
if (dlb2_domain_mapped_queues_empty(hw, domain))
break;
}
if (i == DLB2_MAX_QID_EMPTY_CHECK_LOOPS) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: failed to empty queues\n",
__func__);
return -EFAULT;
}
/*
* Drain the CQs one more time. For the queues to go empty, they would
* have scheduled one or more QEs.
*/
ret = dlb2_domain_drain_ldb_cqs(hw, domain, true);
if (ret < 0)
return ret;
return 0;
}
static void dlb2_domain_enable_ldb_cqs(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
struct dlb2_ldb_port *port;
int i;
RTE_SET_USED(iter);
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
DLB2_DOM_LIST_FOR(domain->used_ldb_ports[i], port, iter) {
port->enabled = true;
dlb2_ldb_port_cq_enable(hw, port);
}
}
}
static struct dlb2_ldb_queue *
dlb2_get_ldb_queue_from_id(struct dlb2_hw *hw,
u32 id,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_list_entry *iter1;
struct dlb2_list_entry *iter2;
struct dlb2_function_resources *rsrcs;
struct dlb2_hw_domain *domain;
struct dlb2_ldb_queue *queue;
RTE_SET_USED(iter1);
RTE_SET_USED(iter2);
if (id >= DLB2_MAX_NUM_LDB_QUEUES)
return NULL;
rsrcs = (vdev_req) ? &hw->vdev[vdev_id] : &hw->pf;
if (!vdev_req)
return &hw->rsrcs.ldb_queues[id];
DLB2_FUNC_LIST_FOR(rsrcs->used_domains, domain, iter1) {
DLB2_DOM_LIST_FOR(domain->used_ldb_queues, queue, iter2)
if (queue->id.virt_id == id)
return queue;
}
DLB2_FUNC_LIST_FOR(rsrcs->avail_ldb_queues, queue, iter1)
if (queue->id.virt_id == id)
return queue;
return NULL;
}
static struct dlb2_hw_domain *dlb2_get_domain_from_id(struct dlb2_hw *hw,
u32 id,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_list_entry *iteration;
struct dlb2_function_resources *rsrcs;
struct dlb2_hw_domain *domain;
RTE_SET_USED(iteration);
if (id >= DLB2_MAX_NUM_DOMAINS)
return NULL;
if (!vdev_req)
return &hw->domains[id];
rsrcs = &hw->vdev[vdev_id];
DLB2_FUNC_LIST_FOR(rsrcs->used_domains, domain, iteration)
if (domain->id.virt_id == id)
return domain;
return NULL;
}
static int dlb2_port_slot_state_transition(struct dlb2_hw *hw,
struct dlb2_ldb_port *port,
struct dlb2_ldb_queue *queue,
int slot,
enum dlb2_qid_map_state new_state)
{
enum dlb2_qid_map_state curr_state = port->qid_map[slot].state;
struct dlb2_hw_domain *domain;
int domain_id;
domain_id = port->domain_id.phys_id;
domain = dlb2_get_domain_from_id(hw, domain_id, false, 0);
if (domain == NULL) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: unable to find domain %d\n",
__func__, domain_id);
return -EINVAL;
}
switch (curr_state) {
case DLB2_QUEUE_UNMAPPED:
switch (new_state) {
case DLB2_QUEUE_MAPPED:
queue->num_mappings++;
port->num_mappings++;
break;
case DLB2_QUEUE_MAP_IN_PROG:
queue->num_pending_additions++;
domain->num_pending_additions++;
break;
default:
goto error;
}
break;
case DLB2_QUEUE_MAPPED:
switch (new_state) {
case DLB2_QUEUE_UNMAPPED:
queue->num_mappings--;
port->num_mappings--;
break;
case DLB2_QUEUE_UNMAP_IN_PROG:
port->num_pending_removals++;
domain->num_pending_removals++;
break;
case DLB2_QUEUE_MAPPED:
/* Priority change, nothing to update */
break;
default:
goto error;
}
break;
case DLB2_QUEUE_MAP_IN_PROG:
switch (new_state) {
case DLB2_QUEUE_UNMAPPED:
queue->num_pending_additions--;
domain->num_pending_additions--;
break;
case DLB2_QUEUE_MAPPED:
queue->num_mappings++;
port->num_mappings++;
queue->num_pending_additions--;
domain->num_pending_additions--;
break;
default:
goto error;
}
break;
case DLB2_QUEUE_UNMAP_IN_PROG:
switch (new_state) {
case DLB2_QUEUE_UNMAPPED:
port->num_pending_removals--;
domain->num_pending_removals--;
queue->num_mappings--;
port->num_mappings--;
break;
case DLB2_QUEUE_MAPPED:
port->num_pending_removals--;
domain->num_pending_removals--;
break;
case DLB2_QUEUE_UNMAP_IN_PROG_PENDING_MAP:
/* Nothing to update */
break;
default:
goto error;
}
break;
case DLB2_QUEUE_UNMAP_IN_PROG_PENDING_MAP:
switch (new_state) {
case DLB2_QUEUE_UNMAP_IN_PROG:
/* Nothing to update */
break;
case DLB2_QUEUE_UNMAPPED:
/*
* An UNMAP_IN_PROG_PENDING_MAP slot briefly
* becomes UNMAPPED before it transitions to
* MAP_IN_PROG.
*/
queue->num_mappings--;
port->num_mappings--;
port->num_pending_removals--;
domain->num_pending_removals--;
break;
default:
goto error;
}
break;
default:
goto error;
}
port->qid_map[slot].state = new_state;
DLB2_HW_DBG(hw,
"[%s()] queue %d -> port %d state transition (%d -> %d)\n",
__func__, queue->id.phys_id, port->id.phys_id,
curr_state, new_state);
return 0;
error:
DLB2_HW_ERR(hw,
"[%s()] Internal error: invalid queue %d -> port %d state transition (%d -> %d)\n",
__func__, queue->id.phys_id, port->id.phys_id,
curr_state, new_state);
return -EFAULT;
}
static bool dlb2_port_find_slot(struct dlb2_ldb_port *port,
enum dlb2_qid_map_state state,
int *slot)
{
int i;
for (i = 0; i < DLB2_MAX_NUM_QIDS_PER_LDB_CQ; i++) {
if (port->qid_map[i].state == state)
break;
}
*slot = i;
return (i < DLB2_MAX_NUM_QIDS_PER_LDB_CQ);
}
static bool dlb2_port_find_slot_queue(struct dlb2_ldb_port *port,
enum dlb2_qid_map_state state,
struct dlb2_ldb_queue *queue,
int *slot)
{
int i;
for (i = 0; i < DLB2_MAX_NUM_QIDS_PER_LDB_CQ; i++) {
if (port->qid_map[i].state == state &&
port->qid_map[i].qid == queue->id.phys_id)
break;
}
*slot = i;
return (i < DLB2_MAX_NUM_QIDS_PER_LDB_CQ);
}
/*
* dlb2_ldb_queue_{enable, disable}_mapped_cqs() don't operate exactly as
* their function names imply, and should only be called by the dynamic CQ
* mapping code.
*/
static void dlb2_ldb_queue_disable_mapped_cqs(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
struct dlb2_ldb_queue *queue)
{
struct dlb2_list_entry *iter;
struct dlb2_ldb_port *port;
int slot, i;
RTE_SET_USED(iter);
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
DLB2_DOM_LIST_FOR(domain->used_ldb_ports[i], port, iter) {
enum dlb2_qid_map_state state = DLB2_QUEUE_MAPPED;
if (!dlb2_port_find_slot_queue(port, state,
queue, &slot))
continue;
if (port->enabled)
dlb2_ldb_port_cq_disable(hw, port);
}
}
}
static void dlb2_ldb_queue_enable_mapped_cqs(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
struct dlb2_ldb_queue *queue)
{
struct dlb2_list_entry *iter;
struct dlb2_ldb_port *port;
int slot, i;
RTE_SET_USED(iter);
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
DLB2_DOM_LIST_FOR(domain->used_ldb_ports[i], port, iter) {
enum dlb2_qid_map_state state = DLB2_QUEUE_MAPPED;
if (!dlb2_port_find_slot_queue(port, state,
queue, &slot))
continue;
if (port->enabled)
dlb2_ldb_port_cq_enable(hw, port);
}
}
}
static void dlb2_ldb_port_clear_queue_if_status(struct dlb2_hw *hw,
struct dlb2_ldb_port *port,
int slot)
{
union dlb2_lsp_ldb_sched_ctrl r0 = { {0} };
r0.field.cq = port->id.phys_id;
r0.field.qidix = slot;
r0.field.value = 0;
r0.field.inflight_ok_v = 1;
DLB2_CSR_WR(hw, DLB2_LSP_LDB_SCHED_CTRL, r0.val);
dlb2_flush_csr(hw);
}
static void dlb2_ldb_port_set_queue_if_status(struct dlb2_hw *hw,
struct dlb2_ldb_port *port,
int slot)
{
union dlb2_lsp_ldb_sched_ctrl r0 = { {0} };
r0.field.cq = port->id.phys_id;
r0.field.qidix = slot;
r0.field.value = 1;
r0.field.inflight_ok_v = 1;
DLB2_CSR_WR(hw, DLB2_LSP_LDB_SCHED_CTRL, r0.val);
dlb2_flush_csr(hw);
}
static int dlb2_ldb_port_map_qid_static(struct dlb2_hw *hw,
struct dlb2_ldb_port *p,
struct dlb2_ldb_queue *q,
u8 priority)
{
union dlb2_lsp_cq2priov r0;
union dlb2_lsp_cq2qid0 r1;
union dlb2_atm_qid2cqidix_00 r2;
union dlb2_lsp_qid2cqidix_00 r3;
union dlb2_lsp_qid2cqidix2_00 r4;
enum dlb2_qid_map_state state;
int i;
/* Look for a pending or already mapped slot, else an unused slot */
if (!dlb2_port_find_slot_queue(p, DLB2_QUEUE_MAP_IN_PROG, q, &i) &&
!dlb2_port_find_slot_queue(p, DLB2_QUEUE_MAPPED, q, &i) &&
!dlb2_port_find_slot(p, DLB2_QUEUE_UNMAPPED, &i)) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: CQ has no available QID mapping slots\n",
__func__, __LINE__);
return -EFAULT;
}
if (i >= DLB2_MAX_NUM_QIDS_PER_LDB_CQ) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: port slot tracking failed\n",
__func__, __LINE__);
return -EFAULT;
}
/* Read-modify-write the priority and valid bit register */
r0.val = DLB2_CSR_RD(hw, DLB2_LSP_CQ2PRIOV(p->id.phys_id));
r0.field.v |= 1 << i;
r0.field.prio |= (priority & 0x7) << i * 3;
DLB2_CSR_WR(hw, DLB2_LSP_CQ2PRIOV(p->id.phys_id), r0.val);
/* Read-modify-write the QID map register */
if (i < 4)
r1.val = DLB2_CSR_RD(hw, DLB2_LSP_CQ2QID0(p->id.phys_id));
else
r1.val = DLB2_CSR_RD(hw, DLB2_LSP_CQ2QID1(p->id.phys_id));
if (i == 0 || i == 4)
r1.field.qid_p0 = q->id.phys_id;
if (i == 1 || i == 5)
r1.field.qid_p1 = q->id.phys_id;
if (i == 2 || i == 6)
r1.field.qid_p2 = q->id.phys_id;
if (i == 3 || i == 7)
r1.field.qid_p3 = q->id.phys_id;
if (i < 4)
DLB2_CSR_WR(hw, DLB2_LSP_CQ2QID0(p->id.phys_id), r1.val);
else
DLB2_CSR_WR(hw, DLB2_LSP_CQ2QID1(p->id.phys_id), r1.val);
r2.val = DLB2_CSR_RD(hw,
DLB2_ATM_QID2CQIDIX(q->id.phys_id,
p->id.phys_id / 4));
r3.val = DLB2_CSR_RD(hw,
DLB2_LSP_QID2CQIDIX(q->id.phys_id,
p->id.phys_id / 4));
r4.val = DLB2_CSR_RD(hw,
DLB2_LSP_QID2CQIDIX2(q->id.phys_id,
p->id.phys_id / 4));
switch (p->id.phys_id % 4) {
case 0:
r2.field.cq_p0 |= 1 << i;
r3.field.cq_p0 |= 1 << i;
r4.field.cq_p0 |= 1 << i;
break;
case 1:
r2.field.cq_p1 |= 1 << i;
r3.field.cq_p1 |= 1 << i;
r4.field.cq_p1 |= 1 << i;
break;
case 2:
r2.field.cq_p2 |= 1 << i;
r3.field.cq_p2 |= 1 << i;
r4.field.cq_p2 |= 1 << i;
break;
case 3:
r2.field.cq_p3 |= 1 << i;
r3.field.cq_p3 |= 1 << i;
r4.field.cq_p3 |= 1 << i;
break;
}
DLB2_CSR_WR(hw,
DLB2_ATM_QID2CQIDIX(q->id.phys_id, p->id.phys_id / 4),
r2.val);
DLB2_CSR_WR(hw,
DLB2_LSP_QID2CQIDIX(q->id.phys_id, p->id.phys_id / 4),
r3.val);
DLB2_CSR_WR(hw,
DLB2_LSP_QID2CQIDIX2(q->id.phys_id, p->id.phys_id / 4),
r4.val);
dlb2_flush_csr(hw);
p->qid_map[i].qid = q->id.phys_id;
p->qid_map[i].priority = priority;
state = DLB2_QUEUE_MAPPED;
return dlb2_port_slot_state_transition(hw, p, q, i, state);
}
static int dlb2_ldb_port_set_has_work_bits(struct dlb2_hw *hw,
struct dlb2_ldb_port *port,
struct dlb2_ldb_queue *queue,
int slot)
{
union dlb2_lsp_qid_aqed_active_cnt r0;
union dlb2_lsp_qid_ldb_enqueue_cnt r1;
union dlb2_lsp_ldb_sched_ctrl r2 = { {0} };
/* Set the atomic scheduling haswork bit */
r0.val = DLB2_CSR_RD(hw,
DLB2_LSP_QID_AQED_ACTIVE_CNT(queue->id.phys_id));
r2.field.cq = port->id.phys_id;
r2.field.qidix = slot;
r2.field.value = 1;
r2.field.rlist_haswork_v = r0.field.count > 0;
/* Set the non-atomic scheduling haswork bit */
DLB2_CSR_WR(hw, DLB2_LSP_LDB_SCHED_CTRL, r2.val);
r1.val = DLB2_CSR_RD(hw,
DLB2_LSP_QID_LDB_ENQUEUE_CNT(queue->id.phys_id));
memset(&r2, 0, sizeof(r2));
r2.field.cq = port->id.phys_id;
r2.field.qidix = slot;
r2.field.value = 1;
r2.field.nalb_haswork_v = (r1.field.count > 0);
DLB2_CSR_WR(hw, DLB2_LSP_LDB_SCHED_CTRL, r2.val);
dlb2_flush_csr(hw);
return 0;
}
static void dlb2_ldb_port_clear_has_work_bits(struct dlb2_hw *hw,
struct dlb2_ldb_port *port,
u8 slot)
{
union dlb2_lsp_ldb_sched_ctrl r2 = { {0} };
r2.field.cq = port->id.phys_id;
r2.field.qidix = slot;
r2.field.value = 0;
r2.field.rlist_haswork_v = 1;
DLB2_CSR_WR(hw, DLB2_LSP_LDB_SCHED_CTRL, r2.val);
memset(&r2, 0, sizeof(r2));
r2.field.cq = port->id.phys_id;
r2.field.qidix = slot;
r2.field.value = 0;
r2.field.nalb_haswork_v = 1;
DLB2_CSR_WR(hw, DLB2_LSP_LDB_SCHED_CTRL, r2.val);
dlb2_flush_csr(hw);
}
static void dlb2_ldb_queue_set_inflight_limit(struct dlb2_hw *hw,
struct dlb2_ldb_queue *queue)
{
union dlb2_lsp_qid_ldb_infl_lim r0 = { {0} };
r0.field.limit = queue->num_qid_inflights;
DLB2_CSR_WR(hw, DLB2_LSP_QID_LDB_INFL_LIM(queue->id.phys_id), r0.val);
}
static void dlb2_ldb_queue_clear_inflight_limit(struct dlb2_hw *hw,
struct dlb2_ldb_queue *queue)
{
DLB2_CSR_WR(hw,
DLB2_LSP_QID_LDB_INFL_LIM(queue->id.phys_id),
DLB2_LSP_QID_LDB_INFL_LIM_RST);
}
static int dlb2_ldb_port_finish_map_qid_dynamic(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
struct dlb2_ldb_port *port,
struct dlb2_ldb_queue *queue)
{
struct dlb2_list_entry *iter;
union dlb2_lsp_qid_ldb_infl_cnt r0;
enum dlb2_qid_map_state state;
int slot, ret, i;
u8 prio;
RTE_SET_USED(iter);
r0.val = DLB2_CSR_RD(hw,
DLB2_LSP_QID_LDB_INFL_CNT(queue->id.phys_id));
if (r0.field.count) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: non-zero QID inflight count\n",
__func__);
return -EINVAL;
}
/*
* Static map the port and set its corresponding has_work bits.
*/
state = DLB2_QUEUE_MAP_IN_PROG;
if (!dlb2_port_find_slot_queue(port, state, queue, &slot))
return -EINVAL;
if (slot >= DLB2_MAX_NUM_QIDS_PER_LDB_CQ) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: port slot tracking failed\n",
__func__, __LINE__);
return -EFAULT;
}
prio = port->qid_map[slot].priority;
/*
* Update the CQ2QID, CQ2PRIOV, and QID2CQIDX registers, and
* the port's qid_map state.
*/
ret = dlb2_ldb_port_map_qid_static(hw, port, queue, prio);
if (ret)
return ret;
ret = dlb2_ldb_port_set_has_work_bits(hw, port, queue, slot);
if (ret)
return ret;
/*
* Ensure IF_status(cq,qid) is 0 before enabling the port to
* prevent spurious schedules to cause the queue's inflight
* count to increase.
*/
dlb2_ldb_port_clear_queue_if_status(hw, port, slot);
/* Reset the queue's inflight status */
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
DLB2_DOM_LIST_FOR(domain->used_ldb_ports[i], port, iter) {
state = DLB2_QUEUE_MAPPED;
if (!dlb2_port_find_slot_queue(port, state,
queue, &slot))
continue;
dlb2_ldb_port_set_queue_if_status(hw, port, slot);
}
}
dlb2_ldb_queue_set_inflight_limit(hw, queue);
/* Re-enable CQs mapped to this queue */
dlb2_ldb_queue_enable_mapped_cqs(hw, domain, queue);
/* If this queue has other mappings pending, clear its inflight limit */
if (queue->num_pending_additions > 0)
dlb2_ldb_queue_clear_inflight_limit(hw, queue);
return 0;
}
/**
* dlb2_ldb_port_map_qid_dynamic() - perform a "dynamic" QID->CQ mapping
* @hw: dlb2_hw handle for a particular device.
* @port: load-balanced port
* @queue: load-balanced queue
* @priority: queue servicing priority
*
* Returns 0 if the queue was mapped, 1 if the mapping is scheduled to occur
* at a later point, and <0 if an error occurred.
*/
static int dlb2_ldb_port_map_qid_dynamic(struct dlb2_hw *hw,
struct dlb2_ldb_port *port,
struct dlb2_ldb_queue *queue,
u8 priority)
{
union dlb2_lsp_qid_ldb_infl_cnt r0 = { {0} };
enum dlb2_qid_map_state state;
struct dlb2_hw_domain *domain;
int domain_id, slot, ret;
domain_id = port->domain_id.phys_id;
domain = dlb2_get_domain_from_id(hw, domain_id, false, 0);
if (domain == NULL) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: unable to find domain %d\n",
__func__, port->domain_id.phys_id);
return -EINVAL;
}
/*
* Set the QID inflight limit to 0 to prevent further scheduling of the
* queue.
*/
DLB2_CSR_WR(hw, DLB2_LSP_QID_LDB_INFL_LIM(queue->id.phys_id), 0);
if (!dlb2_port_find_slot(port, DLB2_QUEUE_UNMAPPED, &slot)) {
DLB2_HW_ERR(hw,
"Internal error: No available unmapped slots\n");
return -EFAULT;
}
if (slot >= DLB2_MAX_NUM_QIDS_PER_LDB_CQ) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: port slot tracking failed\n",
__func__, __LINE__);
return -EFAULT;
}
port->qid_map[slot].qid = queue->id.phys_id;
port->qid_map[slot].priority = priority;
state = DLB2_QUEUE_MAP_IN_PROG;
ret = dlb2_port_slot_state_transition(hw, port, queue, slot, state);
if (ret)
return ret;
r0.val = DLB2_CSR_RD(hw,
DLB2_LSP_QID_LDB_INFL_CNT(queue->id.phys_id));
if (r0.field.count) {
/*
* The queue is owed completions so it's not safe to map it
* yet. Schedule a kernel thread to complete the mapping later,
* once software has completed all the queue's inflight events.
*/
if (!os_worker_active(hw))
os_schedule_work(hw);
return 1;
}
/*
* Disable the affected CQ, and the CQs already mapped to the QID,
* before reading the QID's inflight count a second time. There is an
* unlikely race in which the QID may schedule one more QE after we
* read an inflight count of 0, and disabling the CQs guarantees that
* the race will not occur after a re-read of the inflight count
* register.
*/
if (port->enabled)
dlb2_ldb_port_cq_disable(hw, port);
dlb2_ldb_queue_disable_mapped_cqs(hw, domain, queue);
r0.val = DLB2_CSR_RD(hw,
DLB2_LSP_QID_LDB_INFL_CNT(queue->id.phys_id));
if (r0.field.count) {
if (port->enabled)
dlb2_ldb_port_cq_enable(hw, port);
dlb2_ldb_queue_enable_mapped_cqs(hw, domain, queue);
/*
* The queue is owed completions so it's not safe to map it
* yet. Schedule a kernel thread to complete the mapping later,
* once software has completed all the queue's inflight events.
*/
if (!os_worker_active(hw))
os_schedule_work(hw);
return 1;
}
return dlb2_ldb_port_finish_map_qid_dynamic(hw, domain, port, queue);
}
static void dlb2_domain_finish_map_port(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
struct dlb2_ldb_port *port)
{
int i;
for (i = 0; i < DLB2_MAX_NUM_QIDS_PER_LDB_CQ; i++) {
union dlb2_lsp_qid_ldb_infl_cnt r0;
struct dlb2_ldb_queue *queue;
int qid;
if (port->qid_map[i].state != DLB2_QUEUE_MAP_IN_PROG)
continue;
qid = port->qid_map[i].qid;
queue = dlb2_get_ldb_queue_from_id(hw, qid, false, 0);
if (queue == NULL) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: unable to find queue %d\n",
__func__, qid);
continue;
}
r0.val = DLB2_CSR_RD(hw, DLB2_LSP_QID_LDB_INFL_CNT(qid));
if (r0.field.count)
continue;
/*
* Disable the affected CQ, and the CQs already mapped to the
* QID, before reading the QID's inflight count a second time.
* There is an unlikely race in which the QID may schedule one
* more QE after we read an inflight count of 0, and disabling
* the CQs guarantees that the race will not occur after a
* re-read of the inflight count register.
*/
if (port->enabled)
dlb2_ldb_port_cq_disable(hw, port);
dlb2_ldb_queue_disable_mapped_cqs(hw, domain, queue);
r0.val = DLB2_CSR_RD(hw, DLB2_LSP_QID_LDB_INFL_CNT(qid));
if (r0.field.count) {
if (port->enabled)
dlb2_ldb_port_cq_enable(hw, port);
dlb2_ldb_queue_enable_mapped_cqs(hw, domain, queue);
continue;
}
dlb2_ldb_port_finish_map_qid_dynamic(hw, domain, port, queue);
}
}
static unsigned int
dlb2_domain_finish_map_qid_procedures(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
struct dlb2_ldb_port *port;
int i;
RTE_SET_USED(iter);
if (!domain->configured || domain->num_pending_additions == 0)
return 0;
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
DLB2_DOM_LIST_FOR(domain->used_ldb_ports[i], port, iter)
dlb2_domain_finish_map_port(hw, domain, port);
}
return domain->num_pending_additions;
}
static int dlb2_ldb_port_unmap_qid(struct dlb2_hw *hw,
struct dlb2_ldb_port *port,
struct dlb2_ldb_queue *queue)
{
enum dlb2_qid_map_state mapped, in_progress, pending_map, unmapped;
union dlb2_lsp_cq2priov r0;
union dlb2_atm_qid2cqidix_00 r1;
union dlb2_lsp_qid2cqidix_00 r2;
union dlb2_lsp_qid2cqidix2_00 r3;
u32 queue_id;
u32 port_id;
int i;
/* Find the queue's slot */
mapped = DLB2_QUEUE_MAPPED;
in_progress = DLB2_QUEUE_UNMAP_IN_PROG;
pending_map = DLB2_QUEUE_UNMAP_IN_PROG_PENDING_MAP;
if (!dlb2_port_find_slot_queue(port, mapped, queue, &i) &&
!dlb2_port_find_slot_queue(port, in_progress, queue, &i) &&
!dlb2_port_find_slot_queue(port, pending_map, queue, &i)) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: QID %d isn't mapped\n",
__func__, __LINE__, queue->id.phys_id);
return -EFAULT;
}
if (i >= DLB2_MAX_NUM_QIDS_PER_LDB_CQ) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: port slot tracking failed\n",
__func__, __LINE__);
return -EFAULT;
}
port_id = port->id.phys_id;
queue_id = queue->id.phys_id;
/* Read-modify-write the priority and valid bit register */
r0.val = DLB2_CSR_RD(hw, DLB2_LSP_CQ2PRIOV(port_id));
r0.field.v &= ~(1 << i);
DLB2_CSR_WR(hw, DLB2_LSP_CQ2PRIOV(port_id), r0.val);
r1.val = DLB2_CSR_RD(hw,
DLB2_ATM_QID2CQIDIX(queue_id, port_id / 4));
r2.val = DLB2_CSR_RD(hw,
DLB2_LSP_QID2CQIDIX(queue_id, port_id / 4));
r3.val = DLB2_CSR_RD(hw,
DLB2_LSP_QID2CQIDIX2(queue_id, port_id / 4));
switch (port_id % 4) {
case 0:
r1.field.cq_p0 &= ~(1 << i);
r2.field.cq_p0 &= ~(1 << i);
r3.field.cq_p0 &= ~(1 << i);
break;
case 1:
r1.field.cq_p1 &= ~(1 << i);
r2.field.cq_p1 &= ~(1 << i);
r3.field.cq_p1 &= ~(1 << i);
break;
case 2:
r1.field.cq_p2 &= ~(1 << i);
r2.field.cq_p2 &= ~(1 << i);
r3.field.cq_p2 &= ~(1 << i);
break;
case 3:
r1.field.cq_p3 &= ~(1 << i);
r2.field.cq_p3 &= ~(1 << i);
r3.field.cq_p3 &= ~(1 << i);
break;
}
DLB2_CSR_WR(hw,
DLB2_ATM_QID2CQIDIX(queue_id, port_id / 4),
r1.val);
DLB2_CSR_WR(hw,
DLB2_LSP_QID2CQIDIX(queue_id, port_id / 4),
r2.val);
DLB2_CSR_WR(hw,
DLB2_LSP_QID2CQIDIX2(queue_id, port_id / 4),
r3.val);
dlb2_flush_csr(hw);
unmapped = DLB2_QUEUE_UNMAPPED;
return dlb2_port_slot_state_transition(hw, port, queue, i, unmapped);
}
static int dlb2_ldb_port_map_qid(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
struct dlb2_ldb_port *port,
struct dlb2_ldb_queue *queue,
u8 prio)
{
if (domain->started)
return dlb2_ldb_port_map_qid_dynamic(hw, port, queue, prio);
else
return dlb2_ldb_port_map_qid_static(hw, port, queue, prio);
}
static void
dlb2_domain_finish_unmap_port_slot(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
struct dlb2_ldb_port *port,
int slot)
{
enum dlb2_qid_map_state state;
struct dlb2_ldb_queue *queue;
queue = &hw->rsrcs.ldb_queues[port->qid_map[slot].qid];
state = port->qid_map[slot].state;
/* Update the QID2CQIDX and CQ2QID vectors */
dlb2_ldb_port_unmap_qid(hw, port, queue);
/*
* Ensure the QID will not be serviced by this {CQ, slot} by clearing
* the has_work bits
*/
dlb2_ldb_port_clear_has_work_bits(hw, port, slot);
/* Reset the {CQ, slot} to its default state */
dlb2_ldb_port_set_queue_if_status(hw, port, slot);
/* Re-enable the CQ if it wasn't manually disabled by the user */
if (port->enabled)
dlb2_ldb_port_cq_enable(hw, port);
/*
* If there is a mapping that is pending this slot's removal, perform
* the mapping now.
*/
if (state == DLB2_QUEUE_UNMAP_IN_PROG_PENDING_MAP) {
struct dlb2_ldb_port_qid_map *map;
struct dlb2_ldb_queue *map_queue;
u8 prio;
map = &port->qid_map[slot];
map->qid = map->pending_qid;
map->priority = map->pending_priority;
map_queue = &hw->rsrcs.ldb_queues[map->qid];
prio = map->priority;
dlb2_ldb_port_map_qid(hw, domain, port, map_queue, prio);
}
}
static bool dlb2_domain_finish_unmap_port(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
struct dlb2_ldb_port *port)
{
union dlb2_lsp_cq_ldb_infl_cnt r0;
int i;
if (port->num_pending_removals == 0)
return false;
/*
* The unmap requires all the CQ's outstanding inflights to be
* completed.
*/
r0.val = DLB2_CSR_RD(hw, DLB2_LSP_CQ_LDB_INFL_CNT(port->id.phys_id));
if (r0.field.count > 0)
return false;
for (i = 0; i < DLB2_MAX_NUM_QIDS_PER_LDB_CQ; i++) {
struct dlb2_ldb_port_qid_map *map;
map = &port->qid_map[i];
if (map->state != DLB2_QUEUE_UNMAP_IN_PROG &&
map->state != DLB2_QUEUE_UNMAP_IN_PROG_PENDING_MAP)
continue;
dlb2_domain_finish_unmap_port_slot(hw, domain, port, i);
}
return true;
}
static unsigned int
dlb2_domain_finish_unmap_qid_procedures(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
struct dlb2_ldb_port *port;
int i;
RTE_SET_USED(iter);
if (!domain->configured || domain->num_pending_removals == 0)
return 0;
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
DLB2_DOM_LIST_FOR(domain->used_ldb_ports[i], port, iter)
dlb2_domain_finish_unmap_port(hw, domain, port);
}
return domain->num_pending_removals;
}
static void dlb2_domain_disable_ldb_cqs(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
struct dlb2_ldb_port *port;
int i;
RTE_SET_USED(iter);
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
DLB2_DOM_LIST_FOR(domain->used_ldb_ports[i], port, iter) {
port->enabled = false;
dlb2_ldb_port_cq_disable(hw, port);
}
}
}
static void dlb2_log_reset_domain(struct dlb2_hw *hw,
u32 domain_id,
bool vdev_req,
unsigned int vdev_id)
{
DLB2_HW_DBG(hw, "DLB2 reset domain:\n");
if (vdev_req)
DLB2_HW_DBG(hw, "(Request from vdev %d)\n", vdev_id);
DLB2_HW_DBG(hw, "\tDomain ID: %d\n", domain_id);
}
static void dlb2_domain_disable_dir_vpps(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
unsigned int vdev_id)
{
struct dlb2_list_entry *iter;
union dlb2_sys_vf_dir_vpp_v r1;
struct dlb2_dir_pq_pair *port;
RTE_SET_USED(iter);
r1.field.vpp_v = 0;
DLB2_DOM_LIST_FOR(domain->used_dir_pq_pairs, port, iter) {
unsigned int offs;
u32 virt_id;
if (hw->virt_mode == DLB2_VIRT_SRIOV)
virt_id = port->id.virt_id;
else
virt_id = port->id.phys_id;
offs = vdev_id * DLB2_MAX_NUM_DIR_PORTS + virt_id;
DLB2_CSR_WR(hw, DLB2_SYS_VF_DIR_VPP_V(offs), r1.val);
}
}
static void dlb2_domain_disable_ldb_vpps(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
unsigned int vdev_id)
{
struct dlb2_list_entry *iter;
union dlb2_sys_vf_ldb_vpp_v r1;
struct dlb2_ldb_port *port;
int i;
RTE_SET_USED(iter);
r1.field.vpp_v = 0;
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
DLB2_DOM_LIST_FOR(domain->used_ldb_ports[i], port, iter) {
unsigned int offs;
u32 virt_id;
if (hw->virt_mode == DLB2_VIRT_SRIOV)
virt_id = port->id.virt_id;
else
virt_id = port->id.phys_id;
offs = vdev_id * DLB2_MAX_NUM_LDB_PORTS + virt_id;
DLB2_CSR_WR(hw, DLB2_SYS_VF_LDB_VPP_V(offs), r1.val);
}
}
}
static void
dlb2_domain_disable_ldb_port_interrupts(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
union dlb2_chp_ldb_cq_int_enb r0 = { {0} };
union dlb2_chp_ldb_cq_wd_enb r1 = { {0} };
struct dlb2_ldb_port *port;
int i;
RTE_SET_USED(iter);
r0.field.en_tim = 0;
r0.field.en_depth = 0;
r1.field.wd_enable = 0;
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
DLB2_DOM_LIST_FOR(domain->used_ldb_ports[i], port, iter) {
DLB2_CSR_WR(hw,
DLB2_CHP_LDB_CQ_INT_ENB(port->id.phys_id),
r0.val);
DLB2_CSR_WR(hw,
DLB2_CHP_LDB_CQ_WD_ENB(port->id.phys_id),
r1.val);
}
}
}
static void
dlb2_domain_disable_dir_port_interrupts(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
union dlb2_chp_dir_cq_int_enb r0 = { {0} };
union dlb2_chp_dir_cq_wd_enb r1 = { {0} };
struct dlb2_dir_pq_pair *port;
RTE_SET_USED(iter);
r0.field.en_tim = 0;
r0.field.en_depth = 0;
r1.field.wd_enable = 0;
DLB2_DOM_LIST_FOR(domain->used_dir_pq_pairs, port, iter) {
DLB2_CSR_WR(hw,
DLB2_CHP_DIR_CQ_INT_ENB(port->id.phys_id),
r0.val);
DLB2_CSR_WR(hw,
DLB2_CHP_DIR_CQ_WD_ENB(port->id.phys_id),
r1.val);
}
}
static void
dlb2_domain_disable_ldb_queue_write_perms(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
int domain_offset = domain->id.phys_id * DLB2_MAX_NUM_LDB_QUEUES;
struct dlb2_list_entry *iter;
struct dlb2_ldb_queue *queue;
RTE_SET_USED(iter);
DLB2_DOM_LIST_FOR(domain->used_ldb_queues, queue, iter) {
union dlb2_sys_ldb_vasqid_v r0 = { {0} };
union dlb2_sys_ldb_qid2vqid r1 = { {0} };
union dlb2_sys_vf_ldb_vqid_v r2 = { {0} };
union dlb2_sys_vf_ldb_vqid2qid r3 = { {0} };
int idx;
idx = domain_offset + queue->id.phys_id;
DLB2_CSR_WR(hw, DLB2_SYS_LDB_VASQID_V(idx), r0.val);
if (queue->id.vdev_owned) {
DLB2_CSR_WR(hw,
DLB2_SYS_LDB_QID2VQID(queue->id.phys_id),
r1.val);
idx = queue->id.vdev_id * DLB2_MAX_NUM_LDB_QUEUES +
queue->id.virt_id;
DLB2_CSR_WR(hw,
DLB2_SYS_VF_LDB_VQID_V(idx),
r2.val);
DLB2_CSR_WR(hw,
DLB2_SYS_VF_LDB_VQID2QID(idx),
r3.val);
}
}
}
static void
dlb2_domain_disable_dir_queue_write_perms(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
int domain_offset = domain->id.phys_id * DLB2_MAX_NUM_DIR_PORTS;
struct dlb2_list_entry *iter;
struct dlb2_dir_pq_pair *queue;
RTE_SET_USED(iter);
DLB2_DOM_LIST_FOR(domain->used_dir_pq_pairs, queue, iter) {
union dlb2_sys_dir_vasqid_v r0 = { {0} };
union dlb2_sys_vf_dir_vqid_v r1 = { {0} };
union dlb2_sys_vf_dir_vqid2qid r2 = { {0} };
int idx;
idx = domain_offset + queue->id.phys_id;
DLB2_CSR_WR(hw, DLB2_SYS_DIR_VASQID_V(idx), r0.val);
if (queue->id.vdev_owned) {
idx = queue->id.vdev_id * DLB2_MAX_NUM_DIR_PORTS +
queue->id.virt_id;
DLB2_CSR_WR(hw,
DLB2_SYS_VF_DIR_VQID_V(idx),
r1.val);
DLB2_CSR_WR(hw,
DLB2_SYS_VF_DIR_VQID2QID(idx),
r2.val);
}
}
}
static void dlb2_domain_disable_ldb_seq_checks(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
union dlb2_chp_sn_chk_enbl r1;
struct dlb2_ldb_port *port;
int i;
RTE_SET_USED(iter);
r1.field.en = 0;
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
DLB2_DOM_LIST_FOR(domain->used_ldb_ports[i], port, iter)
DLB2_CSR_WR(hw,
DLB2_CHP_SN_CHK_ENBL(port->id.phys_id),
r1.val);
}
}
static int dlb2_domain_wait_for_ldb_cqs_to_empty(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
struct dlb2_ldb_port *port;
int i;
RTE_SET_USED(iter);
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
DLB2_DOM_LIST_FOR(domain->used_ldb_ports[i], port, iter) {
int i;
for (i = 0; i < DLB2_MAX_CQ_COMP_CHECK_LOOPS; i++) {
if (dlb2_ldb_cq_inflight_count(hw, port) == 0)
break;
}
if (i == DLB2_MAX_CQ_COMP_CHECK_LOOPS) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: failed to flush load-balanced port %d's completions.\n",
__func__, port->id.phys_id);
return -EFAULT;
}
}
}
return 0;
}
static void dlb2_domain_disable_dir_cqs(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
struct dlb2_dir_pq_pair *port;
RTE_SET_USED(iter);
DLB2_DOM_LIST_FOR(domain->used_dir_pq_pairs, port, iter) {
port->enabled = false;
dlb2_dir_port_cq_disable(hw, port);
}
}
static void
dlb2_domain_disable_dir_producer_ports(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
struct dlb2_dir_pq_pair *port;
union dlb2_sys_dir_pp_v r1;
RTE_SET_USED(iter);
r1.field.pp_v = 0;
DLB2_DOM_LIST_FOR(domain->used_dir_pq_pairs, port, iter)
DLB2_CSR_WR(hw,
DLB2_SYS_DIR_PP_V(port->id.phys_id),
r1.val);
}
static void
dlb2_domain_disable_ldb_producer_ports(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
union dlb2_sys_ldb_pp_v r1;
struct dlb2_ldb_port *port;
int i;
RTE_SET_USED(iter);
r1.field.pp_v = 0;
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
DLB2_DOM_LIST_FOR(domain->used_ldb_ports[i], port, iter)
DLB2_CSR_WR(hw,
DLB2_SYS_LDB_PP_V(port->id.phys_id),
r1.val);
}
}
static int dlb2_domain_verify_reset_success(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
struct dlb2_dir_pq_pair *dir_port;
struct dlb2_ldb_port *ldb_port;
struct dlb2_ldb_queue *queue;
int i;
RTE_SET_USED(iter);
/*
* Confirm that all the domain's queue's inflight counts and AQED
* active counts are 0.
*/
DLB2_DOM_LIST_FOR(domain->used_ldb_queues, queue, iter) {
if (!dlb2_ldb_queue_is_empty(hw, queue)) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: failed to empty ldb queue %d\n",
__func__, queue->id.phys_id);
return -EFAULT;
}
}
/* Confirm that all the domain's CQs inflight and token counts are 0. */
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
DLB2_DOM_LIST_FOR(domain->used_ldb_ports[i], ldb_port, iter) {
if (dlb2_ldb_cq_inflight_count(hw, ldb_port) ||
dlb2_ldb_cq_token_count(hw, ldb_port)) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: failed to empty ldb port %d\n",
__func__, ldb_port->id.phys_id);
return -EFAULT;
}
}
}
DLB2_DOM_LIST_FOR(domain->used_dir_pq_pairs, dir_port, iter) {
if (!dlb2_dir_queue_is_empty(hw, dir_port)) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: failed to empty dir queue %d\n",
__func__, dir_port->id.phys_id);
return -EFAULT;
}
if (dlb2_dir_cq_token_count(hw, dir_port)) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: failed to empty dir port %d\n",
__func__, dir_port->id.phys_id);
return -EFAULT;
}
}
return 0;
}
static void __dlb2_domain_reset_ldb_port_registers(struct dlb2_hw *hw,
struct dlb2_ldb_port *port)
{
DLB2_CSR_WR(hw,
DLB2_SYS_LDB_PP2VAS(port->id.phys_id),
DLB2_SYS_LDB_PP2VAS_RST);
DLB2_CSR_WR(hw,
DLB2_CHP_LDB_CQ2VAS(port->id.phys_id),
DLB2_CHP_LDB_CQ2VAS_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_LDB_PP2VDEV(port->id.phys_id),
DLB2_SYS_LDB_PP2VDEV_RST);
if (port->id.vdev_owned) {
unsigned int offs;
u32 virt_id;
/*
* DLB uses producer port address bits 17:12 to determine the
* producer port ID. In Scalable IOV mode, PP accesses come
* through the PF MMIO window for the physical producer port,
* so for translation purposes the virtual and physical port
* IDs are equal.
*/
if (hw->virt_mode == DLB2_VIRT_SRIOV)
virt_id = port->id.virt_id;
else
virt_id = port->id.phys_id;
offs = port->id.vdev_id * DLB2_MAX_NUM_LDB_PORTS + virt_id;
DLB2_CSR_WR(hw,
DLB2_SYS_VF_LDB_VPP2PP(offs),
DLB2_SYS_VF_LDB_VPP2PP_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_VF_LDB_VPP_V(offs),
DLB2_SYS_VF_LDB_VPP_V_RST);
}
DLB2_CSR_WR(hw,
DLB2_SYS_LDB_PP_V(port->id.phys_id),
DLB2_SYS_LDB_PP_V_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_CQ_LDB_DSBL(port->id.phys_id),
DLB2_LSP_CQ_LDB_DSBL_RST);
DLB2_CSR_WR(hw,
DLB2_CHP_LDB_CQ_DEPTH(port->id.phys_id),
DLB2_CHP_LDB_CQ_DEPTH_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_CQ_LDB_INFL_LIM(port->id.phys_id),
DLB2_LSP_CQ_LDB_INFL_LIM_RST);
DLB2_CSR_WR(hw,
DLB2_CHP_HIST_LIST_LIM(port->id.phys_id),
DLB2_CHP_HIST_LIST_LIM_RST);
DLB2_CSR_WR(hw,
DLB2_CHP_HIST_LIST_BASE(port->id.phys_id),
DLB2_CHP_HIST_LIST_BASE_RST);
DLB2_CSR_WR(hw,
DLB2_CHP_HIST_LIST_POP_PTR(port->id.phys_id),
DLB2_CHP_HIST_LIST_POP_PTR_RST);
DLB2_CSR_WR(hw,
DLB2_CHP_HIST_LIST_PUSH_PTR(port->id.phys_id),
DLB2_CHP_HIST_LIST_PUSH_PTR_RST);
DLB2_CSR_WR(hw,
DLB2_CHP_LDB_CQ_INT_DEPTH_THRSH(port->id.phys_id),
DLB2_CHP_LDB_CQ_INT_DEPTH_THRSH_RST);
DLB2_CSR_WR(hw,
DLB2_CHP_LDB_CQ_TMR_THRSH(port->id.phys_id),
DLB2_CHP_LDB_CQ_TMR_THRSH_RST);
DLB2_CSR_WR(hw,
DLB2_CHP_LDB_CQ_INT_ENB(port->id.phys_id),
DLB2_CHP_LDB_CQ_INT_ENB_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_LDB_CQ_ISR(port->id.phys_id),
DLB2_SYS_LDB_CQ_ISR_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_CQ_LDB_TKN_DEPTH_SEL(port->id.phys_id),
DLB2_LSP_CQ_LDB_TKN_DEPTH_SEL_RST);
DLB2_CSR_WR(hw,
DLB2_CHP_LDB_CQ_TKN_DEPTH_SEL(port->id.phys_id),
DLB2_CHP_LDB_CQ_TKN_DEPTH_SEL_RST);
DLB2_CSR_WR(hw,
DLB2_CHP_LDB_CQ_WPTR(port->id.phys_id),
DLB2_CHP_LDB_CQ_WPTR_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_CQ_LDB_TKN_CNT(port->id.phys_id),
DLB2_LSP_CQ_LDB_TKN_CNT_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_LDB_CQ_ADDR_L(port->id.phys_id),
DLB2_SYS_LDB_CQ_ADDR_L_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_LDB_CQ_ADDR_U(port->id.phys_id),
DLB2_SYS_LDB_CQ_ADDR_U_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_LDB_CQ_AT(port->id.phys_id),
DLB2_SYS_LDB_CQ_AT_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_LDB_CQ_PASID(port->id.phys_id),
DLB2_SYS_LDB_CQ_PASID_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_LDB_CQ2VF_PF_RO(port->id.phys_id),
DLB2_SYS_LDB_CQ2VF_PF_RO_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_CQ_LDB_TOT_SCH_CNTL(port->id.phys_id),
DLB2_LSP_CQ_LDB_TOT_SCH_CNTL_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_CQ_LDB_TOT_SCH_CNTH(port->id.phys_id),
DLB2_LSP_CQ_LDB_TOT_SCH_CNTH_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_CQ2QID0(port->id.phys_id),
DLB2_LSP_CQ2QID0_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_CQ2QID1(port->id.phys_id),
DLB2_LSP_CQ2QID1_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_CQ2PRIOV(port->id.phys_id),
DLB2_LSP_CQ2PRIOV_RST);
}
static void dlb2_domain_reset_ldb_port_registers(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
struct dlb2_ldb_port *port;
int i;
RTE_SET_USED(iter);
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
DLB2_DOM_LIST_FOR(domain->used_ldb_ports[i], port, iter)
__dlb2_domain_reset_ldb_port_registers(hw, port);
}
}
static void
__dlb2_domain_reset_dir_port_registers(struct dlb2_hw *hw,
struct dlb2_dir_pq_pair *port)
{
DLB2_CSR_WR(hw,
DLB2_CHP_DIR_CQ2VAS(port->id.phys_id),
DLB2_CHP_DIR_CQ2VAS_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_CQ_DIR_DSBL(port->id.phys_id),
DLB2_LSP_CQ_DIR_DSBL_RST);
DLB2_CSR_WR(hw, DLB2_SYS_DIR_CQ_OPT_CLR, port->id.phys_id);
DLB2_CSR_WR(hw,
DLB2_CHP_DIR_CQ_DEPTH(port->id.phys_id),
DLB2_CHP_DIR_CQ_DEPTH_RST);
DLB2_CSR_WR(hw,
DLB2_CHP_DIR_CQ_INT_DEPTH_THRSH(port->id.phys_id),
DLB2_CHP_DIR_CQ_INT_DEPTH_THRSH_RST);
DLB2_CSR_WR(hw,
DLB2_CHP_DIR_CQ_TMR_THRSH(port->id.phys_id),
DLB2_CHP_DIR_CQ_TMR_THRSH_RST);
DLB2_CSR_WR(hw,
DLB2_CHP_DIR_CQ_INT_ENB(port->id.phys_id),
DLB2_CHP_DIR_CQ_INT_ENB_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_DIR_CQ_ISR(port->id.phys_id),
DLB2_SYS_DIR_CQ_ISR_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_CQ_DIR_TKN_DEPTH_SEL_DSI(port->id.phys_id),
DLB2_LSP_CQ_DIR_TKN_DEPTH_SEL_DSI_RST);
DLB2_CSR_WR(hw,
DLB2_CHP_DIR_CQ_TKN_DEPTH_SEL(port->id.phys_id),
DLB2_CHP_DIR_CQ_TKN_DEPTH_SEL_RST);
DLB2_CSR_WR(hw,
DLB2_CHP_DIR_CQ_WPTR(port->id.phys_id),
DLB2_CHP_DIR_CQ_WPTR_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_CQ_DIR_TKN_CNT(port->id.phys_id),
DLB2_LSP_CQ_DIR_TKN_CNT_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_DIR_CQ_ADDR_L(port->id.phys_id),
DLB2_SYS_DIR_CQ_ADDR_L_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_DIR_CQ_ADDR_U(port->id.phys_id),
DLB2_SYS_DIR_CQ_ADDR_U_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_DIR_CQ_AT(port->id.phys_id),
DLB2_SYS_DIR_CQ_AT_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_DIR_CQ_PASID(port->id.phys_id),
DLB2_SYS_DIR_CQ_PASID_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_DIR_CQ_FMT(port->id.phys_id),
DLB2_SYS_DIR_CQ_FMT_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_DIR_CQ2VF_PF_RO(port->id.phys_id),
DLB2_SYS_DIR_CQ2VF_PF_RO_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_CQ_DIR_TOT_SCH_CNTL(port->id.phys_id),
DLB2_LSP_CQ_DIR_TOT_SCH_CNTL_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_CQ_DIR_TOT_SCH_CNTH(port->id.phys_id),
DLB2_LSP_CQ_DIR_TOT_SCH_CNTH_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_DIR_PP2VAS(port->id.phys_id),
DLB2_SYS_DIR_PP2VAS_RST);
DLB2_CSR_WR(hw,
DLB2_CHP_DIR_CQ2VAS(port->id.phys_id),
DLB2_CHP_DIR_CQ2VAS_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_DIR_PP2VDEV(port->id.phys_id),
DLB2_SYS_DIR_PP2VDEV_RST);
if (port->id.vdev_owned) {
unsigned int offs;
u32 virt_id;
/*
* DLB uses producer port address bits 17:12 to determine the
* producer port ID. In Scalable IOV mode, PP accesses come
* through the PF MMIO window for the physical producer port,
* so for translation purposes the virtual and physical port
* IDs are equal.
*/
if (hw->virt_mode == DLB2_VIRT_SRIOV)
virt_id = port->id.virt_id;
else
virt_id = port->id.phys_id;
offs = port->id.vdev_id * DLB2_MAX_NUM_DIR_PORTS + virt_id;
DLB2_CSR_WR(hw,
DLB2_SYS_VF_DIR_VPP2PP(offs),
DLB2_SYS_VF_DIR_VPP2PP_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_VF_DIR_VPP_V(offs),
DLB2_SYS_VF_DIR_VPP_V_RST);
}
DLB2_CSR_WR(hw,
DLB2_SYS_DIR_PP_V(port->id.phys_id),
DLB2_SYS_DIR_PP_V_RST);
}
static void dlb2_domain_reset_dir_port_registers(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
struct dlb2_dir_pq_pair *port;
RTE_SET_USED(iter);
DLB2_DOM_LIST_FOR(domain->used_dir_pq_pairs, port, iter)
__dlb2_domain_reset_dir_port_registers(hw, port);
}
static void dlb2_domain_reset_ldb_queue_registers(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
struct dlb2_ldb_queue *queue;
RTE_SET_USED(iter);
DLB2_DOM_LIST_FOR(domain->used_ldb_queues, queue, iter) {
unsigned int queue_id = queue->id.phys_id;
int i;
DLB2_CSR_WR(hw,
DLB2_LSP_QID_NALDB_TOT_ENQ_CNTL(queue_id),
DLB2_LSP_QID_NALDB_TOT_ENQ_CNTL_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_QID_NALDB_TOT_ENQ_CNTH(queue_id),
DLB2_LSP_QID_NALDB_TOT_ENQ_CNTH_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_QID_ATM_TOT_ENQ_CNTL(queue_id),
DLB2_LSP_QID_ATM_TOT_ENQ_CNTL_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_QID_ATM_TOT_ENQ_CNTH(queue_id),
DLB2_LSP_QID_ATM_TOT_ENQ_CNTH_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_QID_NALDB_MAX_DEPTH(queue_id),
DLB2_LSP_QID_NALDB_MAX_DEPTH_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_QID_LDB_INFL_LIM(queue_id),
DLB2_LSP_QID_LDB_INFL_LIM_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_QID_AQED_ACTIVE_LIM(queue_id),
DLB2_LSP_QID_AQED_ACTIVE_LIM_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_QID_ATM_DEPTH_THRSH(queue_id),
DLB2_LSP_QID_ATM_DEPTH_THRSH_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_QID_NALDB_DEPTH_THRSH(queue_id),
DLB2_LSP_QID_NALDB_DEPTH_THRSH_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_LDB_QID_ITS(queue_id),
DLB2_SYS_LDB_QID_ITS_RST);
DLB2_CSR_WR(hw,
DLB2_CHP_ORD_QID_SN(queue_id),
DLB2_CHP_ORD_QID_SN_RST);
DLB2_CSR_WR(hw,
DLB2_CHP_ORD_QID_SN_MAP(queue_id),
DLB2_CHP_ORD_QID_SN_MAP_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_LDB_QID_V(queue_id),
DLB2_SYS_LDB_QID_V_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_LDB_QID_CFG_V(queue_id),
DLB2_SYS_LDB_QID_CFG_V_RST);
if (queue->sn_cfg_valid) {
u32 offs[2];
offs[0] = DLB2_RO_PIPE_GRP_0_SLT_SHFT(queue->sn_slot);
offs[1] = DLB2_RO_PIPE_GRP_1_SLT_SHFT(queue->sn_slot);
DLB2_CSR_WR(hw,
offs[queue->sn_group],
DLB2_RO_PIPE_GRP_0_SLT_SHFT_RST);
}
for (i = 0; i < DLB2_LSP_QID2CQIDIX_NUM; i++) {
DLB2_CSR_WR(hw,
DLB2_LSP_QID2CQIDIX(queue_id, i),
DLB2_LSP_QID2CQIDIX_00_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_QID2CQIDIX2(queue_id, i),
DLB2_LSP_QID2CQIDIX2_00_RST);
DLB2_CSR_WR(hw,
DLB2_ATM_QID2CQIDIX(queue_id, i),
DLB2_ATM_QID2CQIDIX_00_RST);
}
}
}
static void dlb2_domain_reset_dir_queue_registers(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
struct dlb2_dir_pq_pair *queue;
RTE_SET_USED(iter);
DLB2_DOM_LIST_FOR(domain->used_dir_pq_pairs, queue, iter) {
DLB2_CSR_WR(hw,
DLB2_LSP_QID_DIR_MAX_DEPTH(queue->id.phys_id),
DLB2_LSP_QID_DIR_MAX_DEPTH_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_QID_DIR_TOT_ENQ_CNTL(queue->id.phys_id),
DLB2_LSP_QID_DIR_TOT_ENQ_CNTL_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_QID_DIR_TOT_ENQ_CNTH(queue->id.phys_id),
DLB2_LSP_QID_DIR_TOT_ENQ_CNTH_RST);
DLB2_CSR_WR(hw,
DLB2_LSP_QID_DIR_DEPTH_THRSH(queue->id.phys_id),
DLB2_LSP_QID_DIR_DEPTH_THRSH_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_DIR_QID_ITS(queue->id.phys_id),
DLB2_SYS_DIR_QID_ITS_RST);
DLB2_CSR_WR(hw,
DLB2_SYS_DIR_QID_V(queue->id.phys_id),
DLB2_SYS_DIR_QID_V_RST);
}
}
static void dlb2_domain_reset_registers(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
dlb2_domain_reset_ldb_port_registers(hw, domain);
dlb2_domain_reset_dir_port_registers(hw, domain);
dlb2_domain_reset_ldb_queue_registers(hw, domain);
dlb2_domain_reset_dir_queue_registers(hw, domain);
DLB2_CSR_WR(hw,
DLB2_CHP_CFG_LDB_VAS_CRD(domain->id.phys_id),
DLB2_CHP_CFG_LDB_VAS_CRD_RST);
DLB2_CSR_WR(hw,
DLB2_CHP_CFG_DIR_VAS_CRD(domain->id.phys_id),
DLB2_CHP_CFG_DIR_VAS_CRD_RST);
}
static int dlb2_domain_reset_software_state(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
struct dlb2_dir_pq_pair *tmp_dir_port;
struct dlb2_ldb_queue *tmp_ldb_queue;
struct dlb2_ldb_port *tmp_ldb_port;
struct dlb2_list_entry *iter1;
struct dlb2_list_entry *iter2;
struct dlb2_function_resources *rsrcs;
struct dlb2_dir_pq_pair *dir_port;
struct dlb2_ldb_queue *ldb_queue;
struct dlb2_ldb_port *ldb_port;
struct dlb2_list_head *list;
int ret, i;
RTE_SET_USED(tmp_dir_port);
RTE_SET_USED(tmp_ldb_queue);
RTE_SET_USED(tmp_ldb_port);
RTE_SET_USED(iter1);
RTE_SET_USED(iter2);
rsrcs = domain->parent_func;
/* Move the domain's ldb queues to the function's avail list */
list = &domain->used_ldb_queues;
DLB2_DOM_LIST_FOR_SAFE(*list, ldb_queue, tmp_ldb_queue, iter1, iter2) {
if (ldb_queue->sn_cfg_valid) {
struct dlb2_sn_group *grp;
grp = &hw->rsrcs.sn_groups[ldb_queue->sn_group];
dlb2_sn_group_free_slot(grp, ldb_queue->sn_slot);
ldb_queue->sn_cfg_valid = false;
}
ldb_queue->owned = false;
ldb_queue->num_mappings = 0;
ldb_queue->num_pending_additions = 0;
dlb2_list_del(&domain->used_ldb_queues,
&ldb_queue->domain_list);
dlb2_list_add(&rsrcs->avail_ldb_queues,
&ldb_queue->func_list);
rsrcs->num_avail_ldb_queues++;
}
list = &domain->avail_ldb_queues;
DLB2_DOM_LIST_FOR_SAFE(*list, ldb_queue, tmp_ldb_queue, iter1, iter2) {
ldb_queue->owned = false;
dlb2_list_del(&domain->avail_ldb_queues,
&ldb_queue->domain_list);
dlb2_list_add(&rsrcs->avail_ldb_queues,
&ldb_queue->func_list);
rsrcs->num_avail_ldb_queues++;
}
/* Move the domain's ldb ports to the function's avail list */
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
list = &domain->used_ldb_ports[i];
DLB2_DOM_LIST_FOR_SAFE(*list, ldb_port, tmp_ldb_port,
iter1, iter2) {
int j;
ldb_port->owned = false;
ldb_port->configured = false;
ldb_port->num_pending_removals = 0;
ldb_port->num_mappings = 0;
ldb_port->init_tkn_cnt = 0;
for (j = 0; j < DLB2_MAX_NUM_QIDS_PER_LDB_CQ; j++)
ldb_port->qid_map[j].state =
DLB2_QUEUE_UNMAPPED;
dlb2_list_del(&domain->used_ldb_ports[i],
&ldb_port->domain_list);
dlb2_list_add(&rsrcs->avail_ldb_ports[i],
&ldb_port->func_list);
rsrcs->num_avail_ldb_ports[i]++;
}
list = &domain->avail_ldb_ports[i];
DLB2_DOM_LIST_FOR_SAFE(*list, ldb_port, tmp_ldb_port,
iter1, iter2) {
ldb_port->owned = false;
dlb2_list_del(&domain->avail_ldb_ports[i],
&ldb_port->domain_list);
dlb2_list_add(&rsrcs->avail_ldb_ports[i],
&ldb_port->func_list);
rsrcs->num_avail_ldb_ports[i]++;
}
}
/* Move the domain's dir ports to the function's avail list */
list = &domain->used_dir_pq_pairs;
DLB2_DOM_LIST_FOR_SAFE(*list, dir_port, tmp_dir_port, iter1, iter2) {
dir_port->owned = false;
dir_port->port_configured = false;
dir_port->init_tkn_cnt = 0;
dlb2_list_del(&domain->used_dir_pq_pairs,
&dir_port->domain_list);
dlb2_list_add(&rsrcs->avail_dir_pq_pairs,
&dir_port->func_list);
rsrcs->num_avail_dir_pq_pairs++;
}
list = &domain->avail_dir_pq_pairs;
DLB2_DOM_LIST_FOR_SAFE(*list, dir_port, tmp_dir_port, iter1, iter2) {
dir_port->owned = false;
dlb2_list_del(&domain->avail_dir_pq_pairs,
&dir_port->domain_list);
dlb2_list_add(&rsrcs->avail_dir_pq_pairs,
&dir_port->func_list);
rsrcs->num_avail_dir_pq_pairs++;
}
/* Return hist list entries to the function */
ret = dlb2_bitmap_set_range(rsrcs->avail_hist_list_entries,
domain->hist_list_entry_base,
domain->total_hist_list_entries);
if (ret) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: domain hist list base doesn't match the function's bitmap.\n",
__func__);
return ret;
}
domain->total_hist_list_entries = 0;
domain->avail_hist_list_entries = 0;
domain->hist_list_entry_base = 0;
domain->hist_list_entry_offset = 0;
rsrcs->num_avail_qed_entries += domain->num_ldb_credits;
domain->num_ldb_credits = 0;
rsrcs->num_avail_dqed_entries += domain->num_dir_credits;
domain->num_dir_credits = 0;
rsrcs->num_avail_aqed_entries += domain->num_avail_aqed_entries;
rsrcs->num_avail_aqed_entries += domain->num_used_aqed_entries;
domain->num_avail_aqed_entries = 0;
domain->num_used_aqed_entries = 0;
domain->num_pending_removals = 0;
domain->num_pending_additions = 0;
domain->configured = false;
domain->started = false;
/*
* Move the domain out of the used_domains list and back to the
* function's avail_domains list.
*/
dlb2_list_del(&rsrcs->used_domains, &domain->func_list);
dlb2_list_add(&rsrcs->avail_domains, &domain->func_list);
rsrcs->num_avail_domains++;
return 0;
}
static int dlb2_domain_drain_unmapped_queue(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
struct dlb2_ldb_queue *queue)
{
struct dlb2_ldb_port *port;
int ret, i;
/* If a domain has LDB queues, it must have LDB ports */
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
if (!dlb2_list_empty(&domain->used_ldb_ports[i]))
break;
}
if (i == DLB2_NUM_COS_DOMAINS) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: No configured LDB ports\n",
__func__);
return -EFAULT;
}
port = DLB2_DOM_LIST_HEAD(domain->used_ldb_ports[i], typeof(*port));
/* If necessary, free up a QID slot in this CQ */
if (port->num_mappings == DLB2_MAX_NUM_QIDS_PER_LDB_CQ) {
struct dlb2_ldb_queue *mapped_queue;
mapped_queue = &hw->rsrcs.ldb_queues[port->qid_map[0].qid];
ret = dlb2_ldb_port_unmap_qid(hw, port, mapped_queue);
if (ret)
return ret;
}
ret = dlb2_ldb_port_map_qid_dynamic(hw, port, queue, 0);
if (ret)
return ret;
return dlb2_domain_drain_mapped_queues(hw, domain);
}
static int dlb2_domain_drain_unmapped_queues(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
struct dlb2_ldb_queue *queue;
int ret;
RTE_SET_USED(iter);
/* If the domain hasn't been started, there's no traffic to drain */
if (!domain->started)
return 0;
/*
* Pre-condition: the unattached queue must not have any outstanding
* completions. This is ensured by calling dlb2_domain_drain_ldb_cqs()
* prior to this in dlb2_domain_drain_mapped_queues().
*/
DLB2_DOM_LIST_FOR(domain->used_ldb_queues, queue, iter) {
if (queue->num_mappings != 0 ||
dlb2_ldb_queue_is_empty(hw, queue))
continue;
ret = dlb2_domain_drain_unmapped_queue(hw, domain, queue);
if (ret)
return ret;
}
return 0;
}
/**
* dlb2_reset_domain() - Reset a DLB scheduling domain and its associated
* hardware resources.
* @hw: Contains the current state of the DLB2 hardware.
* @domain_id: Domain ID
* @vdev_req: Request came from a virtual device.
* @vdev_id: If vdev_req is true, this contains the virtual device's ID.
*
* Note: User software *must* stop sending to this domain's producer ports
* before invoking this function, otherwise undefined behavior will result.
*
* Return: returns < 0 on error, 0 otherwise.
*/
int dlb2_reset_domain(struct dlb2_hw *hw,
u32 domain_id,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_hw_domain *domain;
int ret;
dlb2_log_reset_domain(hw, domain_id, vdev_req, vdev_id);
domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id);
if (domain == NULL || !domain->configured)
return -EINVAL;
/* Disable VPPs */
if (vdev_req) {
dlb2_domain_disable_dir_vpps(hw, domain, vdev_id);
dlb2_domain_disable_ldb_vpps(hw, domain, vdev_id);
}
/* Disable CQ interrupts */
dlb2_domain_disable_dir_port_interrupts(hw, domain);
dlb2_domain_disable_ldb_port_interrupts(hw, domain);
/*
* For each queue owned by this domain, disable its write permissions to
* cause any traffic sent to it to be dropped. Well-behaved software
* should not be sending QEs at this point.
*/
dlb2_domain_disable_dir_queue_write_perms(hw, domain);
dlb2_domain_disable_ldb_queue_write_perms(hw, domain);
/* Turn off completion tracking on all the domain's PPs. */
dlb2_domain_disable_ldb_seq_checks(hw, domain);
/*
* Disable the LDB CQs and drain them in order to complete the map and
* unmap procedures, which require zero CQ inflights and zero QID
* inflights respectively.
*/
dlb2_domain_disable_ldb_cqs(hw, domain);
ret = dlb2_domain_drain_ldb_cqs(hw, domain, false);
if (ret < 0)
return ret;
ret = dlb2_domain_wait_for_ldb_cqs_to_empty(hw, domain);
if (ret < 0)
return ret;
ret = dlb2_domain_finish_unmap_qid_procedures(hw, domain);
if (ret < 0)
return ret;
ret = dlb2_domain_finish_map_qid_procedures(hw, domain);
if (ret < 0)
return ret;
/* Re-enable the CQs in order to drain the mapped queues. */
dlb2_domain_enable_ldb_cqs(hw, domain);
ret = dlb2_domain_drain_mapped_queues(hw, domain);
if (ret < 0)
return ret;
ret = dlb2_domain_drain_unmapped_queues(hw, domain);
if (ret < 0)
return ret;
/* Done draining LDB QEs, so disable the CQs. */
dlb2_domain_disable_ldb_cqs(hw, domain);
dlb2_domain_drain_dir_queues(hw, domain);
/* Done draining DIR QEs, so disable the CQs. */
dlb2_domain_disable_dir_cqs(hw, domain);
/* Disable PPs */
dlb2_domain_disable_dir_producer_ports(hw, domain);
dlb2_domain_disable_ldb_producer_ports(hw, domain);
ret = dlb2_domain_verify_reset_success(hw, domain);
if (ret)
return ret;
/* Reset the QID and port state. */
dlb2_domain_reset_registers(hw, domain);
/* Hardware reset complete. Reset the domain's software state */
ret = dlb2_domain_reset_software_state(hw, domain);
if (ret)
return ret;
return 0;
}
unsigned int dlb2_finish_unmap_qid_procedures(struct dlb2_hw *hw)
{
int i, num = 0;
/* Finish queue unmap jobs for any domain that needs it */
for (i = 0; i < DLB2_MAX_NUM_DOMAINS; i++) {
struct dlb2_hw_domain *domain = &hw->domains[i];
num += dlb2_domain_finish_unmap_qid_procedures(hw, domain);
}
return num;
}
unsigned int dlb2_finish_map_qid_procedures(struct dlb2_hw *hw)
{
int i, num = 0;
/* Finish queue map jobs for any domain that needs it */
for (i = 0; i < DLB2_MAX_NUM_DOMAINS; i++) {
struct dlb2_hw_domain *domain = &hw->domains[i];
num += dlb2_domain_finish_map_qid_procedures(hw, domain);
}
return num;
}
static void dlb2_configure_ldb_queue(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
struct dlb2_ldb_queue *queue,
struct dlb2_create_ldb_queue_args *args,
bool vdev_req,
unsigned int vdev_id)
{
union dlb2_sys_vf_ldb_vqid_v r0 = { {0} };
union dlb2_sys_vf_ldb_vqid2qid r1 = { {0} };
union dlb2_sys_ldb_qid2vqid r2 = { {0} };
union dlb2_sys_ldb_vasqid_v r3 = { {0} };
union dlb2_lsp_qid_ldb_infl_lim r4 = { {0} };
union dlb2_lsp_qid_aqed_active_lim r5 = { {0} };
union dlb2_aqed_pipe_qid_hid_width r6 = { {0} };
union dlb2_sys_ldb_qid_its r7 = { {0} };
union dlb2_lsp_qid_atm_depth_thrsh r8 = { {0} };
union dlb2_lsp_qid_naldb_depth_thrsh r9 = { {0} };
union dlb2_aqed_pipe_qid_fid_lim r10 = { {0} };
union dlb2_chp_ord_qid_sn_map r11 = { {0} };
union dlb2_sys_ldb_qid_cfg_v r12 = { {0} };
union dlb2_sys_ldb_qid_v r13 = { {0} };
struct dlb2_sn_group *sn_group;
unsigned int offs;
/* QID write permissions are turned on when the domain is started */
r3.field.vasqid_v = 0;
offs = domain->id.phys_id * DLB2_MAX_NUM_LDB_QUEUES +
queue->id.phys_id;
DLB2_CSR_WR(hw, DLB2_SYS_LDB_VASQID_V(offs), r3.val);
/*
* Unordered QIDs get 4K inflights, ordered get as many as the number
* of sequence numbers.
*/
r4.field.limit = args->num_qid_inflights;
DLB2_CSR_WR(hw, DLB2_LSP_QID_LDB_INFL_LIM(queue->id.phys_id), r4.val);
r5.field.limit = queue->aqed_limit;
if (r5.field.limit > DLB2_MAX_NUM_AQED_ENTRIES)
r5.field.limit = DLB2_MAX_NUM_AQED_ENTRIES;
DLB2_CSR_WR(hw,
DLB2_LSP_QID_AQED_ACTIVE_LIM(queue->id.phys_id),
r5.val);
switch (args->lock_id_comp_level) {
case 64:
r6.field.compress_code = 1;
break;
case 128:
r6.field.compress_code = 2;
break;
case 256:
r6.field.compress_code = 3;
break;
case 512:
r6.field.compress_code = 4;
break;
case 1024:
r6.field.compress_code = 5;
break;
case 2048:
r6.field.compress_code = 6;
break;
case 4096:
r6.field.compress_code = 7;
break;
case 0:
case 65536:
r6.field.compress_code = 0;
}
DLB2_CSR_WR(hw,
DLB2_AQED_PIPE_QID_HID_WIDTH(queue->id.phys_id),
r6.val);
/* Don't timestamp QEs that pass through this queue */
r7.field.qid_its = 0;
DLB2_CSR_WR(hw,
DLB2_SYS_LDB_QID_ITS(queue->id.phys_id),
r7.val);
r8.field.thresh = args->depth_threshold;
DLB2_CSR_WR(hw,
DLB2_LSP_QID_ATM_DEPTH_THRSH(queue->id.phys_id),
r8.val);
r9.field.thresh = args->depth_threshold;
DLB2_CSR_WR(hw,
DLB2_LSP_QID_NALDB_DEPTH_THRSH(queue->id.phys_id),
r9.val);
/*
* This register limits the number of inflight flows a queue can have
* at one time. It has an upper bound of 2048, but can be
* over-subscribed. 512 is chosen so that a single queue doesn't use
* the entire atomic storage, but can use a substantial portion if
* needed.
*/
r10.field.qid_fid_limit = 512;
DLB2_CSR_WR(hw,
DLB2_AQED_PIPE_QID_FID_LIM(queue->id.phys_id),
r10.val);
/* Configure SNs */
sn_group = &hw->rsrcs.sn_groups[queue->sn_group];
r11.field.mode = sn_group->mode;
r11.field.slot = queue->sn_slot;
r11.field.grp = sn_group->id;
DLB2_CSR_WR(hw, DLB2_CHP_ORD_QID_SN_MAP(queue->id.phys_id), r11.val);
r12.field.sn_cfg_v = (args->num_sequence_numbers != 0);
r12.field.fid_cfg_v = (args->num_atomic_inflights != 0);
DLB2_CSR_WR(hw, DLB2_SYS_LDB_QID_CFG_V(queue->id.phys_id), r12.val);
if (vdev_req) {
offs = vdev_id * DLB2_MAX_NUM_LDB_QUEUES + queue->id.virt_id;
r0.field.vqid_v = 1;
DLB2_CSR_WR(hw, DLB2_SYS_VF_LDB_VQID_V(offs), r0.val);
r1.field.qid = queue->id.phys_id;
DLB2_CSR_WR(hw, DLB2_SYS_VF_LDB_VQID2QID(offs), r1.val);
r2.field.vqid = queue->id.virt_id;
DLB2_CSR_WR(hw,
DLB2_SYS_LDB_QID2VQID(queue->id.phys_id),
r2.val);
}
r13.field.qid_v = 1;
DLB2_CSR_WR(hw, DLB2_SYS_LDB_QID_V(queue->id.phys_id), r13.val);
}
static int
dlb2_ldb_queue_attach_to_sn_group(struct dlb2_hw *hw,
struct dlb2_ldb_queue *queue,
struct dlb2_create_ldb_queue_args *args)
{
int slot = -1;
int i;
queue->sn_cfg_valid = false;
if (args->num_sequence_numbers == 0)
return 0;
for (i = 0; i < DLB2_MAX_NUM_SEQUENCE_NUMBER_GROUPS; i++) {
struct dlb2_sn_group *group = &hw->rsrcs.sn_groups[i];
if (group->sequence_numbers_per_queue ==
args->num_sequence_numbers &&
!dlb2_sn_group_full(group)) {
slot = dlb2_sn_group_alloc_slot(group);
if (slot >= 0)
break;
}
}
if (slot == -1) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: no sequence number slots available\n",
__func__, __LINE__);
return -EFAULT;
}
queue->sn_cfg_valid = true;
queue->sn_group = i;
queue->sn_slot = slot;
return 0;
}
static int
dlb2_ldb_queue_attach_resources(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
struct dlb2_ldb_queue *queue,
struct dlb2_create_ldb_queue_args *args)
{
int ret;
ret = dlb2_ldb_queue_attach_to_sn_group(hw, queue, args);
if (ret)
return ret;
/* Attach QID inflights */
queue->num_qid_inflights = args->num_qid_inflights;
/* Attach atomic inflights */
queue->aqed_limit = args->num_atomic_inflights;
domain->num_avail_aqed_entries -= args->num_atomic_inflights;
domain->num_used_aqed_entries += args->num_atomic_inflights;
return 0;
}
static int
dlb2_verify_create_ldb_queue_args(struct dlb2_hw *hw,
u32 domain_id,
struct dlb2_create_ldb_queue_args *args,
struct dlb2_cmd_response *resp,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_hw_domain *domain;
int i;
domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id);
if (domain == NULL) {
resp->status = DLB2_ST_INVALID_DOMAIN_ID;
return -EINVAL;
}
if (!domain->configured) {
resp->status = DLB2_ST_DOMAIN_NOT_CONFIGURED;
return -EINVAL;
}
if (domain->started) {
resp->status = DLB2_ST_DOMAIN_STARTED;
return -EINVAL;
}
if (dlb2_list_empty(&domain->avail_ldb_queues)) {
resp->status = DLB2_ST_LDB_QUEUES_UNAVAILABLE;
return -EINVAL;
}
if (args->num_sequence_numbers) {
for (i = 0; i < DLB2_MAX_NUM_SEQUENCE_NUMBER_GROUPS; i++) {
struct dlb2_sn_group *group = &hw->rsrcs.sn_groups[i];
if (group->sequence_numbers_per_queue ==
args->num_sequence_numbers &&
!dlb2_sn_group_full(group))
break;
}
if (i == DLB2_MAX_NUM_SEQUENCE_NUMBER_GROUPS) {
resp->status = DLB2_ST_SEQUENCE_NUMBERS_UNAVAILABLE;
return -EINVAL;
}
}
if (args->num_qid_inflights > 4096) {
resp->status = DLB2_ST_INVALID_QID_INFLIGHT_ALLOCATION;
return -EINVAL;
}
/* Inflights must be <= number of sequence numbers if ordered */
if (args->num_sequence_numbers != 0 &&
args->num_qid_inflights > args->num_sequence_numbers) {
resp->status = DLB2_ST_INVALID_QID_INFLIGHT_ALLOCATION;
return -EINVAL;
}
if (domain->num_avail_aqed_entries < args->num_atomic_inflights) {
resp->status = DLB2_ST_ATOMIC_INFLIGHTS_UNAVAILABLE;
return -EINVAL;
}
if (args->num_atomic_inflights &&
args->lock_id_comp_level != 0 &&
args->lock_id_comp_level != 64 &&
args->lock_id_comp_level != 128 &&
args->lock_id_comp_level != 256 &&
args->lock_id_comp_level != 512 &&
args->lock_id_comp_level != 1024 &&
args->lock_id_comp_level != 2048 &&
args->lock_id_comp_level != 4096 &&
args->lock_id_comp_level != 65536) {
resp->status = DLB2_ST_INVALID_LOCK_ID_COMP_LEVEL;
return -EINVAL;
}
return 0;
}
static void
dlb2_log_create_ldb_queue_args(struct dlb2_hw *hw,
u32 domain_id,
struct dlb2_create_ldb_queue_args *args,
bool vdev_req,
unsigned int vdev_id)
{
DLB2_HW_DBG(hw, "DLB2 create load-balanced queue arguments:\n");
if (vdev_req)
DLB2_HW_DBG(hw, "(Request from vdev %d)\n", vdev_id);
DLB2_HW_DBG(hw, "\tDomain ID: %d\n",
domain_id);
DLB2_HW_DBG(hw, "\tNumber of sequence numbers: %d\n",
args->num_sequence_numbers);
DLB2_HW_DBG(hw, "\tNumber of QID inflights: %d\n",
args->num_qid_inflights);
DLB2_HW_DBG(hw, "\tNumber of ATM inflights: %d\n",
args->num_atomic_inflights);
}
/**
* dlb2_hw_create_ldb_queue() - Allocate and initialize a DLB LDB queue.
* @hw: Contains the current state of the DLB2 hardware.
* @domain_id: Domain ID
* @args: User-provided arguments.
* @resp: Response to user.
* @vdev_req: Request came from a virtual device.
* @vdev_id: If vdev_req is true, this contains the virtual device's ID.
*
* Return: returns < 0 on error, 0 otherwise. If the driver is unable to
* satisfy a request, resp->status will be set accordingly.
*/
int dlb2_hw_create_ldb_queue(struct dlb2_hw *hw,
u32 domain_id,
struct dlb2_create_ldb_queue_args *args,
struct dlb2_cmd_response *resp,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_hw_domain *domain;
struct dlb2_ldb_queue *queue;
int ret;
dlb2_log_create_ldb_queue_args(hw, domain_id, args, vdev_req, vdev_id);
/*
* Verify that hardware resources are available before attempting to
* satisfy the request. This simplifies the error unwinding code.
*/
ret = dlb2_verify_create_ldb_queue_args(hw,
domain_id,
args,
resp,
vdev_req,
vdev_id);
if (ret)
return ret;
domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id);
if (domain == NULL) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: domain not found\n",
__func__, __LINE__);
return -EFAULT;
}
queue = DLB2_DOM_LIST_HEAD(domain->avail_ldb_queues, typeof(*queue));
if (queue == NULL) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: no available ldb queues\n",
__func__, __LINE__);
return -EFAULT;
}
ret = dlb2_ldb_queue_attach_resources(hw, domain, queue, args);
if (ret < 0) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: failed to attach the ldb queue resources\n",
__func__, __LINE__);
return ret;
}
dlb2_configure_ldb_queue(hw, domain, queue, args, vdev_req, vdev_id);
queue->num_mappings = 0;
queue->configured = true;
/*
* Configuration succeeded, so move the resource from the 'avail' to
* the 'used' list.
*/
dlb2_list_del(&domain->avail_ldb_queues, &queue->domain_list);
dlb2_list_add(&domain->used_ldb_queues, &queue->domain_list);
resp->status = 0;
resp->id = (vdev_req) ? queue->id.virt_id : queue->id.phys_id;
return 0;
}
int dlb2_get_group_sequence_numbers(struct dlb2_hw *hw, unsigned int group_id)
{
if (group_id >= DLB2_MAX_NUM_SEQUENCE_NUMBER_GROUPS)
return -EINVAL;
return hw->rsrcs.sn_groups[group_id].sequence_numbers_per_queue;
}
int dlb2_get_group_sequence_number_occupancy(struct dlb2_hw *hw,
unsigned int group_id)
{
if (group_id >= DLB2_MAX_NUM_SEQUENCE_NUMBER_GROUPS)
return -EINVAL;
return dlb2_sn_group_used_slots(&hw->rsrcs.sn_groups[group_id]);
}
static void dlb2_log_set_group_sequence_numbers(struct dlb2_hw *hw,
unsigned int group_id,
unsigned long val)
{
DLB2_HW_DBG(hw, "DLB2 set group sequence numbers:\n");
DLB2_HW_DBG(hw, "\tGroup ID: %u\n", group_id);
DLB2_HW_DBG(hw, "\tValue: %lu\n", val);
}
int dlb2_set_group_sequence_numbers(struct dlb2_hw *hw,
unsigned int group_id,
unsigned long val)
{
u32 valid_allocations[] = {64, 128, 256, 512, 1024};
union dlb2_ro_pipe_grp_sn_mode r0 = { {0} };
struct dlb2_sn_group *group;
int mode;
if (group_id >= DLB2_MAX_NUM_SEQUENCE_NUMBER_GROUPS)
return -EINVAL;
group = &hw->rsrcs.sn_groups[group_id];
/*
* Once the first load-balanced queue using an SN group is configured,
* the group cannot be changed.
*/
if (group->slot_use_bitmap != 0)
return -EPERM;
for (mode = 0; mode < DLB2_MAX_NUM_SEQUENCE_NUMBER_MODES; mode++)
if (val == valid_allocations[mode])
break;
if (mode == DLB2_MAX_NUM_SEQUENCE_NUMBER_MODES)
return -EINVAL;
group->mode = mode;
group->sequence_numbers_per_queue = val;
r0.field.sn_mode_0 = hw->rsrcs.sn_groups[0].mode;
r0.field.sn_mode_1 = hw->rsrcs.sn_groups[1].mode;
DLB2_CSR_WR(hw, DLB2_RO_PIPE_GRP_SN_MODE, r0.val);
dlb2_log_set_group_sequence_numbers(hw, group_id, val);
return 0;
}
static void dlb2_ldb_port_configure_pp(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
struct dlb2_ldb_port *port,
bool vdev_req,
unsigned int vdev_id)
{
union dlb2_sys_ldb_pp2vas r0 = { {0} };
union dlb2_sys_ldb_pp_v r4 = { {0} };
r0.field.vas = domain->id.phys_id;
DLB2_CSR_WR(hw, DLB2_SYS_LDB_PP2VAS(port->id.phys_id), r0.val);
if (vdev_req) {
union dlb2_sys_vf_ldb_vpp2pp r1 = { {0} };
union dlb2_sys_ldb_pp2vdev r2 = { {0} };
union dlb2_sys_vf_ldb_vpp_v r3 = { {0} };
unsigned int offs;
u32 virt_id;
/*
* DLB uses producer port address bits 17:12 to determine the
* producer port ID. In Scalable IOV mode, PP accesses come
* through the PF MMIO window for the physical producer port,
* so for translation purposes the virtual and physical port
* IDs are equal.
*/
if (hw->virt_mode == DLB2_VIRT_SRIOV)
virt_id = port->id.virt_id;
else
virt_id = port->id.phys_id;
r1.field.pp = port->id.phys_id;
offs = vdev_id * DLB2_MAX_NUM_LDB_PORTS + virt_id;
DLB2_CSR_WR(hw, DLB2_SYS_VF_LDB_VPP2PP(offs), r1.val);
r2.field.vdev = vdev_id;
DLB2_CSR_WR(hw,
DLB2_SYS_LDB_PP2VDEV(port->id.phys_id),
r2.val);
r3.field.vpp_v = 1;
DLB2_CSR_WR(hw, DLB2_SYS_VF_LDB_VPP_V(offs), r3.val);
}
r4.field.pp_v = 1;
DLB2_CSR_WR(hw,
DLB2_SYS_LDB_PP_V(port->id.phys_id),
r4.val);
}
static int dlb2_ldb_port_configure_cq(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
struct dlb2_ldb_port *port,
uintptr_t cq_dma_base,
struct dlb2_create_ldb_port_args *args,
bool vdev_req,
unsigned int vdev_id)
{
union dlb2_sys_ldb_cq_addr_l r0 = { {0} };
union dlb2_sys_ldb_cq_addr_u r1 = { {0} };
union dlb2_sys_ldb_cq2vf_pf_ro r2 = { {0} };
union dlb2_chp_ldb_cq_tkn_depth_sel r3 = { {0} };
union dlb2_lsp_cq_ldb_tkn_depth_sel r4 = { {0} };
union dlb2_chp_hist_list_lim r5 = { {0} };
union dlb2_chp_hist_list_base r6 = { {0} };
union dlb2_lsp_cq_ldb_infl_lim r7 = { {0} };
union dlb2_chp_hist_list_push_ptr r8 = { {0} };
union dlb2_chp_hist_list_pop_ptr r9 = { {0} };
union dlb2_sys_ldb_cq_at r10 = { {0} };
union dlb2_sys_ldb_cq_pasid r11 = { {0} };
union dlb2_chp_ldb_cq2vas r12 = { {0} };
union dlb2_lsp_cq2priov r13 = { {0} };
/* The CQ address is 64B-aligned, and the DLB only wants bits [63:6] */
r0.field.addr_l = cq_dma_base >> 6;
DLB2_CSR_WR(hw, DLB2_SYS_LDB_CQ_ADDR_L(port->id.phys_id), r0.val);
r1.field.addr_u = cq_dma_base >> 32;
DLB2_CSR_WR(hw, DLB2_SYS_LDB_CQ_ADDR_U(port->id.phys_id), r1.val);
/*
* 'ro' == relaxed ordering. This setting allows DLB2 to write
* cache lines out-of-order (but QEs within a cache line are always
* updated in-order).
*/
r2.field.vf = vdev_id;
r2.field.is_pf = !vdev_req && (hw->virt_mode != DLB2_VIRT_SIOV);
r2.field.ro = 1;
DLB2_CSR_WR(hw, DLB2_SYS_LDB_CQ2VF_PF_RO(port->id.phys_id), r2.val);
if (args->cq_depth <= 8) {
r3.field.token_depth_select = 1;
} else if (args->cq_depth == 16) {
r3.field.token_depth_select = 2;
} else if (args->cq_depth == 32) {
r3.field.token_depth_select = 3;
} else if (args->cq_depth == 64) {
r3.field.token_depth_select = 4;
} else if (args->cq_depth == 128) {
r3.field.token_depth_select = 5;
} else if (args->cq_depth == 256) {
r3.field.token_depth_select = 6;
} else if (args->cq_depth == 512) {
r3.field.token_depth_select = 7;
} else if (args->cq_depth == 1024) {
r3.field.token_depth_select = 8;
} else {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: invalid CQ depth\n",
__func__, __LINE__);
return -EFAULT;
}
DLB2_CSR_WR(hw,
DLB2_CHP_LDB_CQ_TKN_DEPTH_SEL(port->id.phys_id),
r3.val);
/*
* To support CQs with depth less than 8, program the token count
* register with a non-zero initial value. Operations such as domain
* reset must take this initial value into account when quiescing the
* CQ.
*/
port->init_tkn_cnt = 0;
if (args->cq_depth < 8) {
union dlb2_lsp_cq_ldb_tkn_cnt r14 = { {0} };
port->init_tkn_cnt = 8 - args->cq_depth;
r14.field.token_count = port->init_tkn_cnt;
DLB2_CSR_WR(hw,
DLB2_LSP_CQ_LDB_TKN_CNT(port->id.phys_id),
r14.val);
} else {
DLB2_CSR_WR(hw,
DLB2_LSP_CQ_LDB_TKN_CNT(port->id.phys_id),
DLB2_LSP_CQ_LDB_TKN_CNT_RST);
}
r4.field.token_depth_select = r3.field.token_depth_select;
r4.field.ignore_depth = 0;
DLB2_CSR_WR(hw,
DLB2_LSP_CQ_LDB_TKN_DEPTH_SEL(port->id.phys_id),
r4.val);
/* Reset the CQ write pointer */
DLB2_CSR_WR(hw,
DLB2_CHP_LDB_CQ_WPTR(port->id.phys_id),
DLB2_CHP_LDB_CQ_WPTR_RST);
r5.field.limit = port->hist_list_entry_limit - 1;
DLB2_CSR_WR(hw, DLB2_CHP_HIST_LIST_LIM(port->id.phys_id), r5.val);
r6.field.base = port->hist_list_entry_base;
DLB2_CSR_WR(hw, DLB2_CHP_HIST_LIST_BASE(port->id.phys_id), r6.val);
/*
* The inflight limit sets a cap on the number of QEs for which this CQ
* can owe completions at one time.
*/
r7.field.limit = args->cq_history_list_size;
DLB2_CSR_WR(hw, DLB2_LSP_CQ_LDB_INFL_LIM(port->id.phys_id), r7.val);
r8.field.push_ptr = r6.field.base;
r8.field.generation = 0;
DLB2_CSR_WR(hw,
DLB2_CHP_HIST_LIST_PUSH_PTR(port->id.phys_id),
r8.val);
r9.field.pop_ptr = r6.field.base;
r9.field.generation = 0;
DLB2_CSR_WR(hw, DLB2_CHP_HIST_LIST_POP_PTR(port->id.phys_id), r9.val);
/*
* Address translation (AT) settings: 0: untranslated, 2: translated
* (see ATS spec regarding Address Type field for more details)
*/
r10.field.cq_at = 0;
DLB2_CSR_WR(hw, DLB2_SYS_LDB_CQ_AT(port->id.phys_id), r10.val);
if (vdev_req && hw->virt_mode == DLB2_VIRT_SIOV) {
r11.field.pasid = hw->pasid[vdev_id];
r11.field.fmt2 = 1;
}
DLB2_CSR_WR(hw,
DLB2_SYS_LDB_CQ_PASID(port->id.phys_id),
r11.val);
r12.field.cq2vas = domain->id.phys_id;
DLB2_CSR_WR(hw, DLB2_CHP_LDB_CQ2VAS(port->id.phys_id), r12.val);
/* Disable the port's QID mappings */
r13.field.v = 0;
DLB2_CSR_WR(hw, DLB2_LSP_CQ2PRIOV(port->id.phys_id), r13.val);
return 0;
}
static int dlb2_configure_ldb_port(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
struct dlb2_ldb_port *port,
uintptr_t cq_dma_base,
struct dlb2_create_ldb_port_args *args,
bool vdev_req,
unsigned int vdev_id)
{
int ret, i;
port->hist_list_entry_base = domain->hist_list_entry_base +
domain->hist_list_entry_offset;
port->hist_list_entry_limit = port->hist_list_entry_base +
args->cq_history_list_size;
domain->hist_list_entry_offset += args->cq_history_list_size;
domain->avail_hist_list_entries -= args->cq_history_list_size;
ret = dlb2_ldb_port_configure_cq(hw,
domain,
port,
cq_dma_base,
args,
vdev_req,
vdev_id);
if (ret < 0)
return ret;
dlb2_ldb_port_configure_pp(hw,
domain,
port,
vdev_req,
vdev_id);
dlb2_ldb_port_cq_enable(hw, port);
for (i = 0; i < DLB2_MAX_NUM_QIDS_PER_LDB_CQ; i++)
port->qid_map[i].state = DLB2_QUEUE_UNMAPPED;
port->num_mappings = 0;
port->enabled = true;
port->configured = true;
return 0;
}
static void
dlb2_log_create_ldb_port_args(struct dlb2_hw *hw,
u32 domain_id,
uintptr_t cq_dma_base,
struct dlb2_create_ldb_port_args *args,
bool vdev_req,
unsigned int vdev_id)
{
DLB2_HW_DBG(hw, "DLB2 create load-balanced port arguments:\n");
if (vdev_req)
DLB2_HW_DBG(hw, "(Request from vdev %d)\n", vdev_id);
DLB2_HW_DBG(hw, "\tDomain ID: %d\n",
domain_id);
DLB2_HW_DBG(hw, "\tCQ depth: %d\n",
args->cq_depth);
DLB2_HW_DBG(hw, "\tCQ hist list size: %d\n",
args->cq_history_list_size);
DLB2_HW_DBG(hw, "\tCQ base address: 0x%lx\n",
cq_dma_base);
DLB2_HW_DBG(hw, "\tCoS ID: %u\n", args->cos_id);
DLB2_HW_DBG(hw, "\tStrict CoS allocation: %u\n",
args->cos_strict);
}
static int
dlb2_verify_create_ldb_port_args(struct dlb2_hw *hw,
u32 domain_id,
uintptr_t cq_dma_base,
struct dlb2_create_ldb_port_args *args,
struct dlb2_cmd_response *resp,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_hw_domain *domain;
int i;
domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id);
if (domain == NULL) {
resp->status = DLB2_ST_INVALID_DOMAIN_ID;
return -EINVAL;
}
if (!domain->configured) {
resp->status = DLB2_ST_DOMAIN_NOT_CONFIGURED;
return -EINVAL;
}
if (domain->started) {
resp->status = DLB2_ST_DOMAIN_STARTED;
return -EINVAL;
}
if (args->cos_id >= DLB2_NUM_COS_DOMAINS) {
resp->status = DLB2_ST_INVALID_COS_ID;
return -EINVAL;
}
if (args->cos_strict) {
if (dlb2_list_empty(&domain->avail_ldb_ports[args->cos_id])) {
resp->status = DLB2_ST_LDB_PORTS_UNAVAILABLE;
return -EINVAL;
}
} else {
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
if (!dlb2_list_empty(&domain->avail_ldb_ports[i]))
break;
}
if (i == DLB2_NUM_COS_DOMAINS) {
resp->status = DLB2_ST_LDB_PORTS_UNAVAILABLE;
return -EINVAL;
}
}
/* Check cache-line alignment */
if ((cq_dma_base & 0x3F) != 0) {
resp->status = DLB2_ST_INVALID_CQ_VIRT_ADDR;
return -EINVAL;
}
if (args->cq_depth != 1 &&
args->cq_depth != 2 &&
args->cq_depth != 4 &&
args->cq_depth != 8 &&
args->cq_depth != 16 &&
args->cq_depth != 32 &&
args->cq_depth != 64 &&
args->cq_depth != 128 &&
args->cq_depth != 256 &&
args->cq_depth != 512 &&
args->cq_depth != 1024) {
resp->status = DLB2_ST_INVALID_CQ_DEPTH;
return -EINVAL;
}
/* The history list size must be >= 1 */
if (!args->cq_history_list_size) {
resp->status = DLB2_ST_INVALID_HIST_LIST_DEPTH;
return -EINVAL;
}
if (args->cq_history_list_size > domain->avail_hist_list_entries) {
resp->status = DLB2_ST_HIST_LIST_ENTRIES_UNAVAILABLE;
return -EINVAL;
}
return 0;
}
/**
* dlb2_hw_create_ldb_port() - Allocate and initialize a load-balanced port and
* its resources.
* @hw: Contains the current state of the DLB2 hardware.
* @domain_id: Domain ID
* @args: User-provided arguments.
* @cq_dma_base: Base DMA address for consumer queue memory
* @resp: Response to user.
* @vdev_req: Request came from a virtual device.
* @vdev_id: If vdev_req is true, this contains the virtual device's ID.
*
* Return: returns < 0 on error, 0 otherwise. If the driver is unable to
* satisfy a request, resp->status will be set accordingly.
*/
int dlb2_hw_create_ldb_port(struct dlb2_hw *hw,
u32 domain_id,
struct dlb2_create_ldb_port_args *args,
uintptr_t cq_dma_base,
struct dlb2_cmd_response *resp,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_hw_domain *domain;
struct dlb2_ldb_port *port;
int ret, cos_id, i;
dlb2_log_create_ldb_port_args(hw,
domain_id,
cq_dma_base,
args,
vdev_req,
vdev_id);
/*
* Verify that hardware resources are available before attempting to
* satisfy the request. This simplifies the error unwinding code.
*/
ret = dlb2_verify_create_ldb_port_args(hw,
domain_id,
cq_dma_base,
args,
resp,
vdev_req,
vdev_id);
if (ret)
return ret;
domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id);
if (domain == NULL) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: domain not found\n",
__func__, __LINE__);
return -EFAULT;
}
if (args->cos_strict) {
cos_id = args->cos_id;
port = DLB2_DOM_LIST_HEAD(domain->avail_ldb_ports[cos_id],
typeof(*port));
} else {
int idx;
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
idx = (args->cos_id + i) % DLB2_NUM_COS_DOMAINS;
port = DLB2_DOM_LIST_HEAD(domain->avail_ldb_ports[idx],
typeof(*port));
if (port)
break;
}
cos_id = idx;
}
if (port == NULL) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: no available ldb ports\n",
__func__, __LINE__);
return -EFAULT;
}
if (port->configured) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: avail_ldb_ports contains configured ports.\n",
__func__);
return -EFAULT;
}
ret = dlb2_configure_ldb_port(hw,
domain,
port,
cq_dma_base,
args,
vdev_req,
vdev_id);
if (ret < 0)
return ret;
/*
* Configuration succeeded, so move the resource from the 'avail' to
* the 'used' list.
*/
dlb2_list_del(&domain->avail_ldb_ports[cos_id], &port->domain_list);
dlb2_list_add(&domain->used_ldb_ports[cos_id], &port->domain_list);
resp->status = 0;
resp->id = (vdev_req) ? port->id.virt_id : port->id.phys_id;
return 0;
}
static void
dlb2_log_create_dir_port_args(struct dlb2_hw *hw,
u32 domain_id,
uintptr_t cq_dma_base,
struct dlb2_create_dir_port_args *args,
bool vdev_req,
unsigned int vdev_id)
{
DLB2_HW_DBG(hw, "DLB2 create directed port arguments:\n");
if (vdev_req)
DLB2_HW_DBG(hw, "(Request from vdev %d)\n", vdev_id);
DLB2_HW_DBG(hw, "\tDomain ID: %d\n",
domain_id);
DLB2_HW_DBG(hw, "\tCQ depth: %d\n",
args->cq_depth);
DLB2_HW_DBG(hw, "\tCQ base address: 0x%lx\n",
cq_dma_base);
}
static struct dlb2_dir_pq_pair *
dlb2_get_domain_used_dir_pq(u32 id,
bool vdev_req,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
struct dlb2_dir_pq_pair *port;
RTE_SET_USED(iter);
if (id >= DLB2_MAX_NUM_DIR_PORTS)
return NULL;
DLB2_DOM_LIST_FOR(domain->used_dir_pq_pairs, port, iter)
if ((!vdev_req && port->id.phys_id == id) ||
(vdev_req && port->id.virt_id == id))
return port;
return NULL;
}
static int
dlb2_verify_create_dir_port_args(struct dlb2_hw *hw,
u32 domain_id,
uintptr_t cq_dma_base,
struct dlb2_create_dir_port_args *args,
struct dlb2_cmd_response *resp,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_hw_domain *domain;
domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id);
if (domain == NULL) {
resp->status = DLB2_ST_INVALID_DOMAIN_ID;
return -EINVAL;
}
if (!domain->configured) {
resp->status = DLB2_ST_DOMAIN_NOT_CONFIGURED;
return -EINVAL;
}
if (domain->started) {
resp->status = DLB2_ST_DOMAIN_STARTED;
return -EINVAL;
}
/*
* If the user claims the queue is already configured, validate
* the queue ID, its domain, and whether the queue is configured.
*/
if (args->queue_id != -1) {
struct dlb2_dir_pq_pair *queue;
queue = dlb2_get_domain_used_dir_pq(args->queue_id,
vdev_req,
domain);
if (queue == NULL || queue->domain_id.phys_id !=
domain->id.phys_id ||
!queue->queue_configured) {
resp->status = DLB2_ST_INVALID_DIR_QUEUE_ID;
return -EINVAL;
}
}
/*
* If the port's queue is not configured, validate that a free
* port-queue pair is available.
*/
if (args->queue_id == -1 &&
dlb2_list_empty(&domain->avail_dir_pq_pairs)) {
resp->status = DLB2_ST_DIR_PORTS_UNAVAILABLE;
return -EINVAL;
}
/* Check cache-line alignment */
if ((cq_dma_base & 0x3F) != 0) {
resp->status = DLB2_ST_INVALID_CQ_VIRT_ADDR;
return -EINVAL;
}
if (args->cq_depth != 1 &&
args->cq_depth != 2 &&
args->cq_depth != 4 &&
args->cq_depth != 8 &&
args->cq_depth != 16 &&
args->cq_depth != 32 &&
args->cq_depth != 64 &&
args->cq_depth != 128 &&
args->cq_depth != 256 &&
args->cq_depth != 512 &&
args->cq_depth != 1024) {
resp->status = DLB2_ST_INVALID_CQ_DEPTH;
return -EINVAL;
}
return 0;
}
static void dlb2_dir_port_configure_pp(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
struct dlb2_dir_pq_pair *port,
bool vdev_req,
unsigned int vdev_id)
{
union dlb2_sys_dir_pp2vas r0 = { {0} };
union dlb2_sys_dir_pp_v r4 = { {0} };
r0.field.vas = domain->id.phys_id;
DLB2_CSR_WR(hw, DLB2_SYS_DIR_PP2VAS(port->id.phys_id), r0.val);
if (vdev_req) {
union dlb2_sys_vf_dir_vpp2pp r1 = { {0} };
union dlb2_sys_dir_pp2vdev r2 = { {0} };
union dlb2_sys_vf_dir_vpp_v r3 = { {0} };
unsigned int offs;
u32 virt_id;
/*
* DLB uses producer port address bits 17:12 to determine the
* producer port ID. In Scalable IOV mode, PP accesses come
* through the PF MMIO window for the physical producer port,
* so for translation purposes the virtual and physical port
* IDs are equal.
*/
if (hw->virt_mode == DLB2_VIRT_SRIOV)
virt_id = port->id.virt_id;
else
virt_id = port->id.phys_id;
r1.field.pp = port->id.phys_id;
offs = vdev_id * DLB2_MAX_NUM_DIR_PORTS + virt_id;
DLB2_CSR_WR(hw, DLB2_SYS_VF_DIR_VPP2PP(offs), r1.val);
r2.field.vdev = vdev_id;
DLB2_CSR_WR(hw,
DLB2_SYS_DIR_PP2VDEV(port->id.phys_id),
r2.val);
r3.field.vpp_v = 1;
DLB2_CSR_WR(hw, DLB2_SYS_VF_DIR_VPP_V(offs), r3.val);
}
r4.field.pp_v = 1;
DLB2_CSR_WR(hw,
DLB2_SYS_DIR_PP_V(port->id.phys_id),
r4.val);
}
static int dlb2_dir_port_configure_cq(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
struct dlb2_dir_pq_pair *port,
uintptr_t cq_dma_base,
struct dlb2_create_dir_port_args *args,
bool vdev_req,
unsigned int vdev_id)
{
union dlb2_sys_dir_cq_addr_l r0 = { {0} };
union dlb2_sys_dir_cq_addr_u r1 = { {0} };
union dlb2_sys_dir_cq2vf_pf_ro r2 = { {0} };
union dlb2_chp_dir_cq_tkn_depth_sel r3 = { {0} };
union dlb2_lsp_cq_dir_tkn_depth_sel_dsi r4 = { {0} };
union dlb2_sys_dir_cq_fmt r9 = { {0} };
union dlb2_sys_dir_cq_at r10 = { {0} };
union dlb2_sys_dir_cq_pasid r11 = { {0} };
union dlb2_chp_dir_cq2vas r12 = { {0} };
/* The CQ address is 64B-aligned, and the DLB only wants bits [63:6] */
r0.field.addr_l = cq_dma_base >> 6;
DLB2_CSR_WR(hw, DLB2_SYS_DIR_CQ_ADDR_L(port->id.phys_id), r0.val);
r1.field.addr_u = cq_dma_base >> 32;
DLB2_CSR_WR(hw, DLB2_SYS_DIR_CQ_ADDR_U(port->id.phys_id), r1.val);
/*
* 'ro' == relaxed ordering. This setting allows DLB2 to write
* cache lines out-of-order (but QEs within a cache line are always
* updated in-order).
*/
r2.field.vf = vdev_id;
r2.field.is_pf = !vdev_req && (hw->virt_mode != DLB2_VIRT_SIOV);
r2.field.ro = 1;
DLB2_CSR_WR(hw, DLB2_SYS_DIR_CQ2VF_PF_RO(port->id.phys_id), r2.val);
if (args->cq_depth <= 8) {
r3.field.token_depth_select = 1;
} else if (args->cq_depth == 16) {
r3.field.token_depth_select = 2;
} else if (args->cq_depth == 32) {
r3.field.token_depth_select = 3;
} else if (args->cq_depth == 64) {
r3.field.token_depth_select = 4;
} else if (args->cq_depth == 128) {
r3.field.token_depth_select = 5;
} else if (args->cq_depth == 256) {
r3.field.token_depth_select = 6;
} else if (args->cq_depth == 512) {
r3.field.token_depth_select = 7;
} else if (args->cq_depth == 1024) {
r3.field.token_depth_select = 8;
} else {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: invalid CQ depth\n",
__func__, __LINE__);
return -EFAULT;
}
DLB2_CSR_WR(hw,
DLB2_CHP_DIR_CQ_TKN_DEPTH_SEL(port->id.phys_id),
r3.val);
/*
* To support CQs with depth less than 8, program the token count
* register with a non-zero initial value. Operations such as domain
* reset must take this initial value into account when quiescing the
* CQ.
*/
port->init_tkn_cnt = 0;
if (args->cq_depth < 8) {
union dlb2_lsp_cq_dir_tkn_cnt r13 = { {0} };
port->init_tkn_cnt = 8 - args->cq_depth;
r13.field.count = port->init_tkn_cnt;
DLB2_CSR_WR(hw,
DLB2_LSP_CQ_DIR_TKN_CNT(port->id.phys_id),
r13.val);
} else {
DLB2_CSR_WR(hw,
DLB2_LSP_CQ_DIR_TKN_CNT(port->id.phys_id),
DLB2_LSP_CQ_DIR_TKN_CNT_RST);
}
r4.field.token_depth_select = r3.field.token_depth_select;
r4.field.disable_wb_opt = 0;
r4.field.ignore_depth = 0;
DLB2_CSR_WR(hw,
DLB2_LSP_CQ_DIR_TKN_DEPTH_SEL_DSI(port->id.phys_id),
r4.val);
/* Reset the CQ write pointer */
DLB2_CSR_WR(hw,
DLB2_CHP_DIR_CQ_WPTR(port->id.phys_id),
DLB2_CHP_DIR_CQ_WPTR_RST);
/* Virtualize the PPID */
r9.field.keep_pf_ppid = 0;
DLB2_CSR_WR(hw, DLB2_SYS_DIR_CQ_FMT(port->id.phys_id), r9.val);
/*
* Address translation (AT) settings: 0: untranslated, 2: translated
* (see ATS spec regarding Address Type field for more details)
*/
r10.field.cq_at = 0;
DLB2_CSR_WR(hw, DLB2_SYS_DIR_CQ_AT(port->id.phys_id), r10.val);
if (vdev_req && hw->virt_mode == DLB2_VIRT_SIOV) {
r11.field.pasid = hw->pasid[vdev_id];
r11.field.fmt2 = 1;
}
DLB2_CSR_WR(hw,
DLB2_SYS_DIR_CQ_PASID(port->id.phys_id),
r11.val);
r12.field.cq2vas = domain->id.phys_id;
DLB2_CSR_WR(hw, DLB2_CHP_DIR_CQ2VAS(port->id.phys_id), r12.val);
return 0;
}
static int dlb2_configure_dir_port(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
struct dlb2_dir_pq_pair *port,
uintptr_t cq_dma_base,
struct dlb2_create_dir_port_args *args,
bool vdev_req,
unsigned int vdev_id)
{
int ret;
ret = dlb2_dir_port_configure_cq(hw,
domain,
port,
cq_dma_base,
args,
vdev_req,
vdev_id);
if (ret < 0)
return ret;
dlb2_dir_port_configure_pp(hw,
domain,
port,
vdev_req,
vdev_id);
dlb2_dir_port_cq_enable(hw, port);
port->enabled = true;
port->port_configured = true;
return 0;
}
/**
* dlb2_hw_create_dir_port() - Allocate and initialize a DLB directed port
* and queue. The port/queue pair have the same ID and name.
* @hw: Contains the current state of the DLB2 hardware.
* @domain_id: Domain ID
* @args: User-provided arguments.
* @cq_dma_base: Base DMA address for consumer queue memory
* @resp: Response to user.
* @vdev_req: Request came from a virtual device.
* @vdev_id: If vdev_req is true, this contains the virtual device's ID.
*
* Return: returns < 0 on error, 0 otherwise. If the driver is unable to
* satisfy a request, resp->status will be set accordingly.
*/
int dlb2_hw_create_dir_port(struct dlb2_hw *hw,
u32 domain_id,
struct dlb2_create_dir_port_args *args,
uintptr_t cq_dma_base,
struct dlb2_cmd_response *resp,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_dir_pq_pair *port;
struct dlb2_hw_domain *domain;
int ret;
dlb2_log_create_dir_port_args(hw,
domain_id,
cq_dma_base,
args,
vdev_req,
vdev_id);
/*
* Verify that hardware resources are available before attempting to
* satisfy the request. This simplifies the error unwinding code.
*/
ret = dlb2_verify_create_dir_port_args(hw,
domain_id,
cq_dma_base,
args,
resp,
vdev_req,
vdev_id);
if (ret)
return ret;
domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id);
if (args->queue_id != -1)
port = dlb2_get_domain_used_dir_pq(args->queue_id,
vdev_req,
domain);
else
port = DLB2_DOM_LIST_HEAD(domain->avail_dir_pq_pairs,
typeof(*port));
if (port == NULL) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: no available dir ports\n",
__func__, __LINE__);
return -EFAULT;
}
ret = dlb2_configure_dir_port(hw,
domain,
port,
cq_dma_base,
args,
vdev_req,
vdev_id);
if (ret < 0)
return ret;
/*
* Configuration succeeded, so move the resource from the 'avail' to
* the 'used' list (if it's not already there).
*/
if (args->queue_id == -1) {
dlb2_list_del(&domain->avail_dir_pq_pairs, &port->domain_list);
dlb2_list_add(&domain->used_dir_pq_pairs, &port->domain_list);
}
resp->status = 0;
resp->id = (vdev_req) ? port->id.virt_id : port->id.phys_id;
return 0;
}
static void dlb2_configure_dir_queue(struct dlb2_hw *hw,
struct dlb2_hw_domain *domain,
struct dlb2_dir_pq_pair *queue,
struct dlb2_create_dir_queue_args *args,
bool vdev_req,
unsigned int vdev_id)
{
union dlb2_sys_dir_vasqid_v r0 = { {0} };
union dlb2_sys_dir_qid_its r1 = { {0} };
union dlb2_lsp_qid_dir_depth_thrsh r2 = { {0} };
union dlb2_sys_dir_qid_v r5 = { {0} };
unsigned int offs;
/* QID write permissions are turned on when the domain is started */
r0.field.vasqid_v = 0;
offs = domain->id.phys_id * DLB2_MAX_NUM_DIR_QUEUES +
queue->id.phys_id;
DLB2_CSR_WR(hw, DLB2_SYS_DIR_VASQID_V(offs), r0.val);
/* Don't timestamp QEs that pass through this queue */
r1.field.qid_its = 0;
DLB2_CSR_WR(hw,
DLB2_SYS_DIR_QID_ITS(queue->id.phys_id),
r1.val);
r2.field.thresh = args->depth_threshold;
DLB2_CSR_WR(hw,
DLB2_LSP_QID_DIR_DEPTH_THRSH(queue->id.phys_id),
r2.val);
if (vdev_req) {
union dlb2_sys_vf_dir_vqid_v r3 = { {0} };
union dlb2_sys_vf_dir_vqid2qid r4 = { {0} };
offs = vdev_id * DLB2_MAX_NUM_DIR_QUEUES + queue->id.virt_id;
r3.field.vqid_v = 1;
DLB2_CSR_WR(hw, DLB2_SYS_VF_DIR_VQID_V(offs), r3.val);
r4.field.qid = queue->id.phys_id;
DLB2_CSR_WR(hw, DLB2_SYS_VF_DIR_VQID2QID(offs), r4.val);
}
r5.field.qid_v = 1;
DLB2_CSR_WR(hw, DLB2_SYS_DIR_QID_V(queue->id.phys_id), r5.val);
queue->queue_configured = true;
}
static void
dlb2_log_create_dir_queue_args(struct dlb2_hw *hw,
u32 domain_id,
struct dlb2_create_dir_queue_args *args,
bool vdev_req,
unsigned int vdev_id)
{
DLB2_HW_DBG(hw, "DLB2 create directed queue arguments:\n");
if (vdev_req)
DLB2_HW_DBG(hw, "(Request from vdev %d)\n", vdev_id);
DLB2_HW_DBG(hw, "\tDomain ID: %d\n", domain_id);
DLB2_HW_DBG(hw, "\tPort ID: %d\n", args->port_id);
}
static int
dlb2_verify_create_dir_queue_args(struct dlb2_hw *hw,
u32 domain_id,
struct dlb2_create_dir_queue_args *args,
struct dlb2_cmd_response *resp,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_hw_domain *domain;
domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id);
if (domain == NULL) {
resp->status = DLB2_ST_INVALID_DOMAIN_ID;
return -EINVAL;
}
if (!domain->configured) {
resp->status = DLB2_ST_DOMAIN_NOT_CONFIGURED;
return -EINVAL;
}
if (domain->started) {
resp->status = DLB2_ST_DOMAIN_STARTED;
return -EINVAL;
}
/*
* If the user claims the port is already configured, validate the port
* ID, its domain, and whether the port is configured.
*/
if (args->port_id != -1) {
struct dlb2_dir_pq_pair *port;
port = dlb2_get_domain_used_dir_pq(args->port_id,
vdev_req,
domain);
if (port == NULL || port->domain_id.phys_id !=
domain->id.phys_id || !port->port_configured) {
resp->status = DLB2_ST_INVALID_PORT_ID;
return -EINVAL;
}
}
/*
* If the queue's port is not configured, validate that a free
* port-queue pair is available.
*/
if (args->port_id == -1 &&
dlb2_list_empty(&domain->avail_dir_pq_pairs)) {
resp->status = DLB2_ST_DIR_QUEUES_UNAVAILABLE;
return -EINVAL;
}
return 0;
}
/**
* dlb2_hw_create_dir_queue() - Allocate and initialize a DLB DIR queue.
* @hw: Contains the current state of the DLB2 hardware.
* @domain_id: Domain ID
* @args: User-provided arguments.
* @resp: Response to user.
* @vdev_req: Request came from a virtual device.
* @vdev_id: If vdev_req is true, this contains the virtual device's ID.
*
* Return: returns < 0 on error, 0 otherwise. If the driver is unable to
* satisfy a request, resp->status will be set accordingly.
*/
int dlb2_hw_create_dir_queue(struct dlb2_hw *hw,
u32 domain_id,
struct dlb2_create_dir_queue_args *args,
struct dlb2_cmd_response *resp,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_dir_pq_pair *queue;
struct dlb2_hw_domain *domain;
int ret;
dlb2_log_create_dir_queue_args(hw, domain_id, args, vdev_req, vdev_id);
/*
* Verify that hardware resources are available before attempting to
* satisfy the request. This simplifies the error unwinding code.
*/
ret = dlb2_verify_create_dir_queue_args(hw,
domain_id,
args,
resp,
vdev_req,
vdev_id);
if (ret)
return ret;
domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id);
if (domain == NULL) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: domain not found\n",
__func__, __LINE__);
return -EFAULT;
}
if (args->port_id != -1)
queue = dlb2_get_domain_used_dir_pq(args->port_id,
vdev_req,
domain);
else
queue = DLB2_DOM_LIST_HEAD(domain->avail_dir_pq_pairs,
typeof(*queue));
if (queue == NULL) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: no available dir queues\n",
__func__, __LINE__);
return -EFAULT;
}
dlb2_configure_dir_queue(hw, domain, queue, args, vdev_req, vdev_id);
/*
* Configuration succeeded, so move the resource from the 'avail' to
* the 'used' list (if it's not already there).
*/
if (args->port_id == -1) {
dlb2_list_del(&domain->avail_dir_pq_pairs,
&queue->domain_list);
dlb2_list_add(&domain->used_dir_pq_pairs,
&queue->domain_list);
}
resp->status = 0;
resp->id = (vdev_req) ? queue->id.virt_id : queue->id.phys_id;
return 0;
}
static bool
dlb2_port_find_slot_with_pending_map_queue(struct dlb2_ldb_port *port,
struct dlb2_ldb_queue *queue,
int *slot)
{
int i;
for (i = 0; i < DLB2_MAX_NUM_QIDS_PER_LDB_CQ; i++) {
struct dlb2_ldb_port_qid_map *map = &port->qid_map[i];
if (map->state == DLB2_QUEUE_UNMAP_IN_PROG_PENDING_MAP &&
map->pending_qid == queue->id.phys_id)
break;
}
*slot = i;
return (i < DLB2_MAX_NUM_QIDS_PER_LDB_CQ);
}
static void dlb2_ldb_port_change_qid_priority(struct dlb2_hw *hw,
struct dlb2_ldb_port *port,
int slot,
struct dlb2_map_qid_args *args)
{
union dlb2_lsp_cq2priov r0;
/* Read-modify-write the priority and valid bit register */
r0.val = DLB2_CSR_RD(hw, DLB2_LSP_CQ2PRIOV(port->id.phys_id));
r0.field.v |= 1 << slot;
r0.field.prio |= (args->priority & 0x7) << slot * 3;
DLB2_CSR_WR(hw, DLB2_LSP_CQ2PRIOV(port->id.phys_id), r0.val);
dlb2_flush_csr(hw);
port->qid_map[slot].priority = args->priority;
}
static int dlb2_verify_map_qid_slot_available(struct dlb2_ldb_port *port,
struct dlb2_ldb_queue *queue,
struct dlb2_cmd_response *resp)
{
enum dlb2_qid_map_state state;
int i;
/* Unused slot available? */
if (port->num_mappings < DLB2_MAX_NUM_QIDS_PER_LDB_CQ)
return 0;
/*
* If the queue is already mapped (from the application's perspective),
* this is simply a priority update.
*/
state = DLB2_QUEUE_MAPPED;
if (dlb2_port_find_slot_queue(port, state, queue, &i))
return 0;
state = DLB2_QUEUE_MAP_IN_PROG;
if (dlb2_port_find_slot_queue(port, state, queue, &i))
return 0;
if (dlb2_port_find_slot_with_pending_map_queue(port, queue, &i))
return 0;
/*
* If the slot contains an unmap in progress, it's considered
* available.
*/
state = DLB2_QUEUE_UNMAP_IN_PROG;
if (dlb2_port_find_slot(port, state, &i))
return 0;
state = DLB2_QUEUE_UNMAPPED;
if (dlb2_port_find_slot(port, state, &i))
return 0;
resp->status = DLB2_ST_NO_QID_SLOTS_AVAILABLE;
return -EINVAL;
}
static struct dlb2_ldb_queue *
dlb2_get_domain_ldb_queue(u32 id,
bool vdev_req,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
struct dlb2_ldb_queue *queue;
RTE_SET_USED(iter);
if (id >= DLB2_MAX_NUM_LDB_QUEUES)
return NULL;
DLB2_DOM_LIST_FOR(domain->used_ldb_queues, queue, iter)
if ((!vdev_req && queue->id.phys_id == id) ||
(vdev_req && queue->id.virt_id == id))
return queue;
return NULL;
}
static struct dlb2_ldb_port *
dlb2_get_domain_used_ldb_port(u32 id,
bool vdev_req,
struct dlb2_hw_domain *domain)
{
struct dlb2_list_entry *iter;
struct dlb2_ldb_port *port;
int i;
RTE_SET_USED(iter);
if (id >= DLB2_MAX_NUM_LDB_PORTS)
return NULL;
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
DLB2_DOM_LIST_FOR(domain->used_ldb_ports[i], port, iter)
if ((!vdev_req && port->id.phys_id == id) ||
(vdev_req && port->id.virt_id == id))
return port;
DLB2_DOM_LIST_FOR(domain->avail_ldb_ports[i], port, iter)
if ((!vdev_req && port->id.phys_id == id) ||
(vdev_req && port->id.virt_id == id))
return port;
}
return NULL;
}
static int dlb2_verify_map_qid_args(struct dlb2_hw *hw,
u32 domain_id,
struct dlb2_map_qid_args *args,
struct dlb2_cmd_response *resp,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_hw_domain *domain;
struct dlb2_ldb_port *port;
struct dlb2_ldb_queue *queue;
int id;
domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id);
if (domain == NULL) {
resp->status = DLB2_ST_INVALID_DOMAIN_ID;
return -EINVAL;
}
if (!domain->configured) {
resp->status = DLB2_ST_DOMAIN_NOT_CONFIGURED;
return -EINVAL;
}
id = args->port_id;
port = dlb2_get_domain_used_ldb_port(id, vdev_req, domain);
if (port == NULL || !port->configured) {
resp->status = DLB2_ST_INVALID_PORT_ID;
return -EINVAL;
}
if (args->priority >= DLB2_QID_PRIORITIES) {
resp->status = DLB2_ST_INVALID_PRIORITY;
return -EINVAL;
}
queue = dlb2_get_domain_ldb_queue(args->qid, vdev_req, domain);
if (queue == NULL || !queue->configured) {
resp->status = DLB2_ST_INVALID_QID;
return -EINVAL;
}
if (queue->domain_id.phys_id != domain->id.phys_id) {
resp->status = DLB2_ST_INVALID_QID;
return -EINVAL;
}
if (port->domain_id.phys_id != domain->id.phys_id) {
resp->status = DLB2_ST_INVALID_PORT_ID;
return -EINVAL;
}
return 0;
}
static void dlb2_log_map_qid(struct dlb2_hw *hw,
u32 domain_id,
struct dlb2_map_qid_args *args,
bool vdev_req,
unsigned int vdev_id)
{
DLB2_HW_DBG(hw, "DLB2 map QID arguments:\n");
if (vdev_req)
DLB2_HW_DBG(hw, "(Request from vdev %d)\n", vdev_id);
DLB2_HW_DBG(hw, "\tDomain ID: %d\n",
domain_id);
DLB2_HW_DBG(hw, "\tPort ID: %d\n",
args->port_id);
DLB2_HW_DBG(hw, "\tQueue ID: %d\n",
args->qid);
DLB2_HW_DBG(hw, "\tPriority: %d\n",
args->priority);
}
int dlb2_hw_map_qid(struct dlb2_hw *hw,
u32 domain_id,
struct dlb2_map_qid_args *args,
struct dlb2_cmd_response *resp,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_hw_domain *domain;
struct dlb2_ldb_queue *queue;
enum dlb2_qid_map_state st;
struct dlb2_ldb_port *port;
int ret, i, id;
u8 prio;
dlb2_log_map_qid(hw, domain_id, args, vdev_req, vdev_id);
/*
* Verify that hardware resources are available before attempting to
* satisfy the request. This simplifies the error unwinding code.
*/
ret = dlb2_verify_map_qid_args(hw,
domain_id,
args,
resp,
vdev_req,
vdev_id);
if (ret)
return ret;
prio = args->priority;
domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id);
if (domain == NULL) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: domain not found\n",
__func__, __LINE__);
return -EFAULT;
}
id = args->port_id;
port = dlb2_get_domain_used_ldb_port(id, vdev_req, domain);
if (port == NULL) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: port not found\n",
__func__, __LINE__);
return -EFAULT;
}
queue = dlb2_get_domain_ldb_queue(args->qid, vdev_req, domain);
if (queue == NULL) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: queue not found\n",
__func__, __LINE__);
return -EFAULT;
}
/*
* If there are any outstanding detach operations for this port,
* attempt to complete them. This may be necessary to free up a QID
* slot for this requested mapping.
*/
if (port->num_pending_removals)
dlb2_domain_finish_unmap_port(hw, domain, port);
ret = dlb2_verify_map_qid_slot_available(port, queue, resp);
if (ret)
return ret;
/* Hardware requires disabling the CQ before mapping QIDs. */
if (port->enabled)
dlb2_ldb_port_cq_disable(hw, port);
/*
* If this is only a priority change, don't perform the full QID->CQ
* mapping procedure
*/
st = DLB2_QUEUE_MAPPED;
if (dlb2_port_find_slot_queue(port, st, queue, &i)) {
if (i >= DLB2_MAX_NUM_QIDS_PER_LDB_CQ) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: port slot tracking failed\n",
__func__, __LINE__);
return -EFAULT;
}
if (prio != port->qid_map[i].priority) {
dlb2_ldb_port_change_qid_priority(hw, port, i, args);
DLB2_HW_DBG(hw, "DLB2 map: priority change\n");
}
st = DLB2_QUEUE_MAPPED;
ret = dlb2_port_slot_state_transition(hw, port, queue, i, st);
if (ret)
return ret;
goto map_qid_done;
}
st = DLB2_QUEUE_UNMAP_IN_PROG;
if (dlb2_port_find_slot_queue(port, st, queue, &i)) {
if (i >= DLB2_MAX_NUM_QIDS_PER_LDB_CQ) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: port slot tracking failed\n",
__func__, __LINE__);
return -EFAULT;
}
if (prio != port->qid_map[i].priority) {
dlb2_ldb_port_change_qid_priority(hw, port, i, args);
DLB2_HW_DBG(hw, "DLB2 map: priority change\n");
}
st = DLB2_QUEUE_MAPPED;
ret = dlb2_port_slot_state_transition(hw, port, queue, i, st);
if (ret)
return ret;
goto map_qid_done;
}
/*
* If this is a priority change on an in-progress mapping, don't
* perform the full QID->CQ mapping procedure.
*/
st = DLB2_QUEUE_MAP_IN_PROG;
if (dlb2_port_find_slot_queue(port, st, queue, &i)) {
if (i >= DLB2_MAX_NUM_QIDS_PER_LDB_CQ) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: port slot tracking failed\n",
__func__, __LINE__);
return -EFAULT;
}
port->qid_map[i].priority = prio;
DLB2_HW_DBG(hw, "DLB2 map: priority change only\n");
goto map_qid_done;
}
/*
* If this is a priority change on a pending mapping, update the
* pending priority
*/
if (dlb2_port_find_slot_with_pending_map_queue(port, queue, &i)) {
if (i >= DLB2_MAX_NUM_QIDS_PER_LDB_CQ) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: port slot tracking failed\n",
__func__, __LINE__);
return -EFAULT;
}
port->qid_map[i].pending_priority = prio;
DLB2_HW_DBG(hw, "DLB2 map: priority change only\n");
goto map_qid_done;
}
/*
* If all the CQ's slots are in use, then there's an unmap in progress
* (guaranteed by dlb2_verify_map_qid_slot_available()), so add this
* mapping to pending_map and return. When the removal is completed for
* the slot's current occupant, this mapping will be performed.
*/
if (!dlb2_port_find_slot(port, DLB2_QUEUE_UNMAPPED, &i)) {
if (dlb2_port_find_slot(port, DLB2_QUEUE_UNMAP_IN_PROG, &i)) {
enum dlb2_qid_map_state st;
if (i >= DLB2_MAX_NUM_QIDS_PER_LDB_CQ) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: port slot tracking failed\n",
__func__, __LINE__);
return -EFAULT;
}
port->qid_map[i].pending_qid = queue->id.phys_id;
port->qid_map[i].pending_priority = prio;
st = DLB2_QUEUE_UNMAP_IN_PROG_PENDING_MAP;
ret = dlb2_port_slot_state_transition(hw, port, queue,
i, st);
if (ret)
return ret;
DLB2_HW_DBG(hw, "DLB2 map: map pending removal\n");
goto map_qid_done;
}
}
/*
* If the domain has started, a special "dynamic" CQ->queue mapping
* procedure is required in order to safely update the CQ<->QID tables.
* The "static" procedure cannot be used when traffic is flowing,
* because the CQ<->QID tables cannot be updated atomically and the
* scheduler won't see the new mapping unless the queue's if_status
* changes, which isn't guaranteed.
*/
ret = dlb2_ldb_port_map_qid(hw, domain, port, queue, prio);
/* If ret is less than zero, it's due to an internal error */
if (ret < 0)
return ret;
map_qid_done:
if (port->enabled)
dlb2_ldb_port_cq_enable(hw, port);
resp->status = 0;
return 0;
}
static void dlb2_log_unmap_qid(struct dlb2_hw *hw,
u32 domain_id,
struct dlb2_unmap_qid_args *args,
bool vdev_req,
unsigned int vdev_id)
{
DLB2_HW_DBG(hw, "DLB2 unmap QID arguments:\n");
if (vdev_req)
DLB2_HW_DBG(hw, "(Request from vdev %d)\n", vdev_id);
DLB2_HW_DBG(hw, "\tDomain ID: %d\n",
domain_id);
DLB2_HW_DBG(hw, "\tPort ID: %d\n",
args->port_id);
DLB2_HW_DBG(hw, "\tQueue ID: %d\n",
args->qid);
if (args->qid < DLB2_MAX_NUM_LDB_QUEUES)
DLB2_HW_DBG(hw, "\tQueue's num mappings: %d\n",
hw->rsrcs.ldb_queues[args->qid].num_mappings);
}
static int dlb2_verify_unmap_qid_args(struct dlb2_hw *hw,
u32 domain_id,
struct dlb2_unmap_qid_args *args,
struct dlb2_cmd_response *resp,
bool vdev_req,
unsigned int vdev_id)
{
enum dlb2_qid_map_state state;
struct dlb2_hw_domain *domain;
struct dlb2_ldb_queue *queue;
struct dlb2_ldb_port *port;
int slot;
int id;
domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id);
if (domain == NULL) {
resp->status = DLB2_ST_INVALID_DOMAIN_ID;
return -EINVAL;
}
if (!domain->configured) {
resp->status = DLB2_ST_DOMAIN_NOT_CONFIGURED;
return -EINVAL;
}
id = args->port_id;
port = dlb2_get_domain_used_ldb_port(id, vdev_req, domain);
if (port == NULL || !port->configured) {
resp->status = DLB2_ST_INVALID_PORT_ID;
return -EINVAL;
}
if (port->domain_id.phys_id != domain->id.phys_id) {
resp->status = DLB2_ST_INVALID_PORT_ID;
return -EINVAL;
}
queue = dlb2_get_domain_ldb_queue(args->qid, vdev_req, domain);
if (queue == NULL || !queue->configured) {
DLB2_HW_ERR(hw, "[%s()] Can't unmap unconfigured queue %d\n",
__func__, args->qid);
resp->status = DLB2_ST_INVALID_QID;
return -EINVAL;
}
/*
* Verify that the port has the queue mapped. From the application's
* perspective a queue is mapped if it is actually mapped, the map is
* in progress, or the map is blocked pending an unmap.
*/
state = DLB2_QUEUE_MAPPED;
if (dlb2_port_find_slot_queue(port, state, queue, &slot))
return 0;
state = DLB2_QUEUE_MAP_IN_PROG;
if (dlb2_port_find_slot_queue(port, state, queue, &slot))
return 0;
if (dlb2_port_find_slot_with_pending_map_queue(port, queue, &slot))
return 0;
resp->status = DLB2_ST_INVALID_QID;
return -EINVAL;
}
int dlb2_hw_unmap_qid(struct dlb2_hw *hw,
u32 domain_id,
struct dlb2_unmap_qid_args *args,
struct dlb2_cmd_response *resp,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_hw_domain *domain;
struct dlb2_ldb_queue *queue;
enum dlb2_qid_map_state st;
struct dlb2_ldb_port *port;
bool unmap_complete;
int i, ret, id;
dlb2_log_unmap_qid(hw, domain_id, args, vdev_req, vdev_id);
/*
* Verify that hardware resources are available before attempting to
* satisfy the request. This simplifies the error unwinding code.
*/
ret = dlb2_verify_unmap_qid_args(hw,
domain_id,
args,
resp,
vdev_req,
vdev_id);
if (ret)
return ret;
domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id);
if (domain == NULL) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: domain not found\n",
__func__, __LINE__);
return -EFAULT;
}
id = args->port_id;
port = dlb2_get_domain_used_ldb_port(id, vdev_req, domain);
if (port == NULL) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: port not found\n",
__func__, __LINE__);
return -EFAULT;
}
queue = dlb2_get_domain_ldb_queue(args->qid, vdev_req, domain);
if (queue == NULL) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: queue not found\n",
__func__, __LINE__);
return -EFAULT;
}
/*
* If the queue hasn't been mapped yet, we need to update the slot's
* state and re-enable the queue's inflights.
*/
st = DLB2_QUEUE_MAP_IN_PROG;
if (dlb2_port_find_slot_queue(port, st, queue, &i)) {
if (i >= DLB2_MAX_NUM_QIDS_PER_LDB_CQ) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: port slot tracking failed\n",
__func__, __LINE__);
return -EFAULT;
}
/*
* Since the in-progress map was aborted, re-enable the QID's
* inflights.
*/
if (queue->num_pending_additions == 0)
dlb2_ldb_queue_set_inflight_limit(hw, queue);
st = DLB2_QUEUE_UNMAPPED;
ret = dlb2_port_slot_state_transition(hw, port, queue, i, st);
if (ret)
return ret;
goto unmap_qid_done;
}
/*
* If the queue mapping is on hold pending an unmap, we simply need to
* update the slot's state.
*/
if (dlb2_port_find_slot_with_pending_map_queue(port, queue, &i)) {
if (i >= DLB2_MAX_NUM_QIDS_PER_LDB_CQ) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: port slot tracking failed\n",
__func__, __LINE__);
return -EFAULT;
}
st = DLB2_QUEUE_UNMAP_IN_PROG;
ret = dlb2_port_slot_state_transition(hw, port, queue, i, st);
if (ret)
return ret;
goto unmap_qid_done;
}
st = DLB2_QUEUE_MAPPED;
if (!dlb2_port_find_slot_queue(port, st, queue, &i)) {
DLB2_HW_ERR(hw,
"[%s()] Internal error: no available CQ slots\n",
__func__);
return -EFAULT;
}
if (i >= DLB2_MAX_NUM_QIDS_PER_LDB_CQ) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: port slot tracking failed\n",
__func__, __LINE__);
return -EFAULT;
}
/*
* QID->CQ mapping removal is an asynchronous procedure. It requires
* stopping the DLB2 from scheduling this CQ, draining all inflights
* from the CQ, then unmapping the queue from the CQ. This function
* simply marks the port as needing the queue unmapped, and (if
* necessary) starts the unmapping worker thread.
*/
dlb2_ldb_port_cq_disable(hw, port);
st = DLB2_QUEUE_UNMAP_IN_PROG;
ret = dlb2_port_slot_state_transition(hw, port, queue, i, st);
if (ret)
return ret;
/*
* Attempt to finish the unmapping now, in case the port has no
* outstanding inflights. If that's not the case, this will fail and
* the unmapping will be completed at a later time.
*/
unmap_complete = dlb2_domain_finish_unmap_port(hw, domain, port);
/*
* If the unmapping couldn't complete immediately, launch the worker
* thread (if it isn't already launched) to finish it later.
*/
if (!unmap_complete && !os_worker_active(hw))
os_schedule_work(hw);
unmap_qid_done:
resp->status = 0;
return 0;
}
static void
dlb2_log_pending_port_unmaps_args(struct dlb2_hw *hw,
struct dlb2_pending_port_unmaps_args *args,
bool vdev_req,
unsigned int vdev_id)
{
DLB2_HW_DBG(hw, "DLB unmaps in progress arguments:\n");
if (vdev_req)
DLB2_HW_DBG(hw, "(Request from VF %d)\n", vdev_id);
DLB2_HW_DBG(hw, "\tPort ID: %d\n", args->port_id);
}
int dlb2_hw_pending_port_unmaps(struct dlb2_hw *hw,
u32 domain_id,
struct dlb2_pending_port_unmaps_args *args,
struct dlb2_cmd_response *resp,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_hw_domain *domain;
struct dlb2_ldb_port *port;
dlb2_log_pending_port_unmaps_args(hw, args, vdev_req, vdev_id);
domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id);
if (domain == NULL) {
resp->status = DLB2_ST_INVALID_DOMAIN_ID;
return -EINVAL;
}
port = dlb2_get_domain_used_ldb_port(args->port_id, vdev_req, domain);
if (port == NULL || !port->configured) {
resp->status = DLB2_ST_INVALID_PORT_ID;
return -EINVAL;
}
resp->id = port->num_pending_removals;
return 0;
}
static int dlb2_verify_start_domain_args(struct dlb2_hw *hw,
u32 domain_id,
struct dlb2_cmd_response *resp,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_hw_domain *domain;
domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id);
if (domain == NULL) {
resp->status = DLB2_ST_INVALID_DOMAIN_ID;
return -EINVAL;
}
if (!domain->configured) {
resp->status = DLB2_ST_DOMAIN_NOT_CONFIGURED;
return -EINVAL;
}
if (domain->started) {
resp->status = DLB2_ST_DOMAIN_STARTED;
return -EINVAL;
}
return 0;
}
static void dlb2_log_start_domain(struct dlb2_hw *hw,
u32 domain_id,
bool vdev_req,
unsigned int vdev_id)
{
DLB2_HW_DBG(hw, "DLB2 start domain arguments:\n");
if (vdev_req)
DLB2_HW_DBG(hw, "(Request from vdev %d)\n", vdev_id);
DLB2_HW_DBG(hw, "\tDomain ID: %d\n", domain_id);
}
/**
* dlb2_hw_start_domain() - Lock the domain configuration
* @hw: Contains the current state of the DLB2 hardware.
* @domain_id: Domain ID
* @arg: User-provided arguments (unused, here for ioctl callback template).
* @resp: Response to user.
* @vdev_req: Request came from a virtual device.
* @vdev_id: If vdev_req is true, this contains the virtual device's ID.
*
* Return: returns < 0 on error, 0 otherwise. If the driver is unable to
* satisfy a request, resp->status will be set accordingly.
*/
int
dlb2_hw_start_domain(struct dlb2_hw *hw,
u32 domain_id,
__attribute((unused)) struct dlb2_start_domain_args *arg,
struct dlb2_cmd_response *resp,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_list_entry *iter;
struct dlb2_dir_pq_pair *dir_queue;
struct dlb2_ldb_queue *ldb_queue;
struct dlb2_hw_domain *domain;
int ret;
RTE_SET_USED(arg);
RTE_SET_USED(iter);
dlb2_log_start_domain(hw, domain_id, vdev_req, vdev_id);
ret = dlb2_verify_start_domain_args(hw,
domain_id,
resp,
vdev_req,
vdev_id);
if (ret)
return ret;
domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id);
if (domain == NULL) {
DLB2_HW_ERR(hw,
"[%s():%d] Internal error: domain not found\n",
__func__, __LINE__);
return -EFAULT;
}
/*
* Enable load-balanced and directed queue write permissions for the
* queues this domain owns. Without this, the DLB2 will drop all
* incoming traffic to those queues.
*/
DLB2_DOM_LIST_FOR(domain->used_ldb_queues, ldb_queue, iter) {
union dlb2_sys_ldb_vasqid_v r0 = { {0} };
unsigned int offs;
r0.field.vasqid_v = 1;
offs = domain->id.phys_id * DLB2_MAX_NUM_LDB_QUEUES +
ldb_queue->id.phys_id;
DLB2_CSR_WR(hw, DLB2_SYS_LDB_VASQID_V(offs), r0.val);
}
DLB2_DOM_LIST_FOR(domain->used_dir_pq_pairs, dir_queue, iter) {
union dlb2_sys_dir_vasqid_v r0 = { {0} };
unsigned int offs;
r0.field.vasqid_v = 1;
offs = domain->id.phys_id * DLB2_MAX_NUM_DIR_PORTS +
dir_queue->id.phys_id;
DLB2_CSR_WR(hw, DLB2_SYS_DIR_VASQID_V(offs), r0.val);
}
dlb2_flush_csr(hw);
domain->started = true;
resp->status = 0;
return 0;
}
static void dlb2_log_get_dir_queue_depth(struct dlb2_hw *hw,
u32 domain_id,
u32 queue_id,
bool vdev_req,
unsigned int vf_id)
{
DLB2_HW_DBG(hw, "DLB get directed queue depth:\n");
if (vdev_req)
DLB2_HW_DBG(hw, "(Request from VF %d)\n", vf_id);
DLB2_HW_DBG(hw, "\tDomain ID: %d\n", domain_id);
DLB2_HW_DBG(hw, "\tQueue ID: %d\n", queue_id);
}
int dlb2_hw_get_dir_queue_depth(struct dlb2_hw *hw,
u32 domain_id,
struct dlb2_get_dir_queue_depth_args *args,
struct dlb2_cmd_response *resp,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_dir_pq_pair *queue;
struct dlb2_hw_domain *domain;
int id;
id = domain_id;
dlb2_log_get_dir_queue_depth(hw, domain_id, args->queue_id,
vdev_req, vdev_id);
domain = dlb2_get_domain_from_id(hw, id, vdev_req, vdev_id);
if (domain == NULL) {
resp->status = DLB2_ST_INVALID_DOMAIN_ID;
return -EINVAL;
}
id = args->queue_id;
queue = dlb2_get_domain_used_dir_pq(id, vdev_req, domain);
if (queue == NULL) {
resp->status = DLB2_ST_INVALID_QID;
return -EINVAL;
}
resp->id = dlb2_dir_queue_depth(hw, queue);
return 0;
}
static void dlb2_log_get_ldb_queue_depth(struct dlb2_hw *hw,
u32 domain_id,
u32 queue_id,
bool vdev_req,
unsigned int vf_id)
{
DLB2_HW_DBG(hw, "DLB get load-balanced queue depth:\n");
if (vdev_req)
DLB2_HW_DBG(hw, "(Request from VF %d)\n", vf_id);
DLB2_HW_DBG(hw, "\tDomain ID: %d\n", domain_id);
DLB2_HW_DBG(hw, "\tQueue ID: %d\n", queue_id);
}
int dlb2_hw_get_ldb_queue_depth(struct dlb2_hw *hw,
u32 domain_id,
struct dlb2_get_ldb_queue_depth_args *args,
struct dlb2_cmd_response *resp,
bool vdev_req,
unsigned int vdev_id)
{
struct dlb2_hw_domain *domain;
struct dlb2_ldb_queue *queue;
dlb2_log_get_ldb_queue_depth(hw, domain_id, args->queue_id,
vdev_req, vdev_id);
domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id);
if (domain == NULL) {
resp->status = DLB2_ST_INVALID_DOMAIN_ID;
return -EINVAL;
}
queue = dlb2_get_domain_ldb_queue(args->queue_id, vdev_req, domain);
if (queue == NULL) {
resp->status = DLB2_ST_INVALID_QID;
return -EINVAL;
}
resp->id = dlb2_ldb_queue_depth(hw, queue);
return 0;
}
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