event/dlb2: support ldb port specific COS
DLB supports 4 class of service domains, to aid in managing the device bandwidth across ldb ports. This commit allows specifying which ldb ports will participate in the COS scheme, which class they are a part of, and the specific bandwidth percentage associated with each class. The cumulative bandwidth associated with the 4 classes must not exceed 100%. This feature is enabled on the command line, and will be documented in the DLB2 programmers guide. Signed-off-by: Timothy McDaniel <timothy.mcdaniel@intel.com>
This commit is contained in:
Timothy McDaniel
Jerin Jacob
parent
ffa46fc4a2
commit
bec8901bfe
@ -164,6 +164,28 @@ set_cq_weight(const char *key __rte_unused,
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return 0;
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}
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/* override defaults with value(s) provided on command line */
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static void
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dlb2_init_port_cos(struct dlb2_eventdev *dlb2, int *port_cos)
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{
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int q;
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for (q = 0; q < DLB2_MAX_NUM_PORTS_ALL; q++) {
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dlb2->ev_ports[q].cos_id = port_cos[q];
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dlb2->cos_ports[port_cos[q]]++;
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}
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}
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static void
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dlb2_init_cos_bw(struct dlb2_eventdev *dlb2,
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struct dlb2_cos_bw *cos_bw)
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{
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int q;
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for (q = 0; q < DLB2_COS_NUM_VALS; q++)
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dlb2->cos_bw[q] = cos_bw->val[q];
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}
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static int
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dlb2_hw_query_resources(struct dlb2_eventdev *dlb2)
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{
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@ -378,36 +400,6 @@ set_dev_id(const char *key __rte_unused,
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return 0;
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}
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static int
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set_cos(const char *key __rte_unused,
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const char *value,
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void *opaque)
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{
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enum dlb2_cos *cos_id = opaque;
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int x = 0;
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int ret;
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if (value == NULL || opaque == NULL) {
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DLB2_LOG_ERR("NULL pointer\n");
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return -EINVAL;
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}
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ret = dlb2_string_to_int(&x, value);
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if (ret < 0)
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return ret;
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if (x != DLB2_COS_DEFAULT && (x < DLB2_COS_0 || x > DLB2_COS_3)) {
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DLB2_LOG_ERR(
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"COS %d out of range, must be DLB2_COS_DEFAULT or 0-3\n",
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x);
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return -EINVAL;
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}
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*cos_id = x;
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return 0;
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}
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static int
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set_poll_interval(const char *key __rte_unused,
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const char *value,
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@ -428,6 +420,80 @@ set_poll_interval(const char *key __rte_unused,
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return 0;
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}
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static int
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set_port_cos(const char *key __rte_unused,
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const char *value,
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void *opaque)
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{
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struct dlb2_port_cos *port_cos = opaque;
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int first, last, cos_id, i;
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if (value == NULL || opaque == NULL) {
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DLB2_LOG_ERR("NULL pointer\n");
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return -EINVAL;
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}
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/* command line override may take one of the following 3 forms:
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* port_cos=all:<cos_id> ... all ports
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* port_cos=port-port:<cos_id> ... a range of ports
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* port_cos=port:<cos_id> ... just one port
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*/
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if (sscanf(value, "all:%d", &cos_id) == 1) {
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first = 0;
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last = DLB2_MAX_NUM_LDB_PORTS - 1;
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} else if (sscanf(value, "%d-%d:%d", &first, &last, &cos_id) == 3) {
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/* we have everything we need */
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} else if (sscanf(value, "%d:%d", &first, &cos_id) == 2) {
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last = first;
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} else {
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DLB2_LOG_ERR("Error parsing ldb port port_cos devarg. Should be all:val, port-port:val, or port:val\n");
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return -EINVAL;
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}
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if (first > last || first < 0 ||
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last >= DLB2_MAX_NUM_LDB_PORTS) {
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DLB2_LOG_ERR("Error parsing ldb port cos_id arg, invalid port value\n");
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return -EINVAL;
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}
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if (cos_id < DLB2_COS_0 || cos_id > DLB2_COS_3) {
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DLB2_LOG_ERR("Error parsing ldb port cos_id devarg, must be between 0 and 4\n");
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return -EINVAL;
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}
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for (i = first; i <= last; i++)
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port_cos->cos_id[i] = cos_id; /* indexed by port */
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return 0;
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}
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static int
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set_cos_bw(const char *key __rte_unused,
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const char *value,
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void *opaque)
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{
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struct dlb2_cos_bw *cos_bw = opaque;
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if (opaque == NULL) {
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DLB2_LOG_ERR("NULL pointer\n");
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return -EINVAL;
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}
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/* format must be %d,%d,%d,%d */
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if (sscanf(value, "%d,%d,%d,%d", &cos_bw->val[0], &cos_bw->val[1],
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&cos_bw->val[2], &cos_bw->val[3]) != 4) {
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DLB2_LOG_ERR("Error parsing cos bandwidth devarg. Should be bw0,bw1,bw2,bw3 where all values combined are <= 100\n");
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return -EINVAL;
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}
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if (cos_bw->val[0] + cos_bw->val[1] + cos_bw->val[2] + cos_bw->val[3] > 100) {
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DLB2_LOG_ERR("Error parsing cos bandwidth devarg. Should be bw0,bw1,bw2,bw3 where all values combined are <= 100\n");
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return -EINVAL;
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}
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return 0;
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}
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static int
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set_sw_credit_quanta(const char *key __rte_unused,
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const char *value,
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@ -653,11 +719,13 @@ dlb2_eventdev_info_get(struct rte_eventdev *dev,
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}
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static int
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dlb2_hw_create_sched_domain(struct dlb2_hw_dev *handle,
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dlb2_hw_create_sched_domain(struct dlb2_eventdev *dlb2,
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struct dlb2_hw_dev *handle,
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const struct dlb2_hw_rsrcs *resources_asked,
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uint8_t device_version)
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{
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int ret = 0;
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uint32_t cos_ports = 0;
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struct dlb2_create_sched_domain_args *cfg;
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if (resources_asked == NULL) {
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@ -683,38 +751,22 @@ dlb2_hw_create_sched_domain(struct dlb2_hw_dev *handle,
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/* LDB ports */
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cfg->cos_strict = 0; /* Best effort */
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cfg->num_cos_ldb_ports[0] = 0;
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cfg->num_cos_ldb_ports[1] = 0;
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cfg->num_cos_ldb_ports[2] = 0;
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cfg->num_cos_ldb_ports[3] = 0;
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/* tally of ports with non default COS */
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cos_ports = dlb2->cos_ports[1] + dlb2->cos_ports[2] +
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dlb2->cos_ports[3];
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switch (handle->cos_id) {
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case DLB2_COS_0:
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cfg->num_ldb_ports = 0; /* no don't care ports */
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cfg->num_cos_ldb_ports[0] =
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resources_asked->num_ldb_ports;
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break;
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case DLB2_COS_1:
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cfg->num_ldb_ports = 0; /* no don't care ports */
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cfg->num_cos_ldb_ports[1] = resources_asked->num_ldb_ports;
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break;
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case DLB2_COS_2:
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cfg->num_ldb_ports = 0; /* no don't care ports */
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cfg->num_cos_ldb_ports[2] = resources_asked->num_ldb_ports;
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break;
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case DLB2_COS_3:
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cfg->num_ldb_ports = 0; /* no don't care ports */
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cfg->num_cos_ldb_ports[3] =
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resources_asked->num_ldb_ports;
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break;
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case DLB2_COS_DEFAULT:
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/* all ldb ports are don't care ports from a cos perspective */
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cfg->num_ldb_ports =
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resources_asked->num_ldb_ports;
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break;
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if (cos_ports > resources_asked->num_ldb_ports) {
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DLB2_LOG_ERR("dlb2: num_ldb_ports < nonzero cos_ports\n");
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ret = EINVAL;
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goto error_exit;
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}
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cfg->cos_strict = 0; /* Best effort */
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cfg->num_cos_ldb_ports[0] = resources_asked->num_ldb_ports - cos_ports;
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cfg->num_cos_ldb_ports[1] = dlb2->cos_ports[1];
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cfg->num_cos_ldb_ports[2] = dlb2->cos_ports[2];
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cfg->num_cos_ldb_ports[3] = dlb2->cos_ports[3];
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if (device_version == DLB2_HW_V2)
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cfg->num_ldb_credits = resources_asked->num_ldb_credits;
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@ -892,7 +944,8 @@ dlb2_eventdev_configure(const struct rte_eventdev *dev)
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rsrcs->num_dir_credits = dlb2->num_dir_credits_override;
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}
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if (dlb2_hw_create_sched_domain(handle, rsrcs, dlb2->version) < 0) {
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if (dlb2_hw_create_sched_domain(dlb2, handle, rsrcs,
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dlb2->version) < 0) {
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DLB2_LOG_ERR("dlb2_hw_create_sched_domain failed\n");
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return -ENODEV;
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}
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@ -1449,12 +1502,8 @@ dlb2_hw_create_ldb_port(struct dlb2_eventdev *dlb2,
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cfg.cq_history_list_size = DLB2_NUM_HIST_LIST_ENTRIES_PER_LDB_PORT;
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if (handle->cos_id == DLB2_COS_DEFAULT)
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cfg.cos_id = 0;
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else
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cfg.cos_id = handle->cos_id;
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cfg.cos_strict = 0;
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cfg.cos_id = ev_port->cos_id;
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cfg.cos_strict = 0;/* best effots */
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/* User controls the LDB high watermark via enqueue depth. The DIR high
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* watermark is equal, unless the directed credit pool is too small.
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@ -1509,7 +1558,8 @@ dlb2_hw_create_ldb_port(struct dlb2_eventdev *dlb2,
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qm_port->cached_ldb_credits = 0;
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qm_port->cached_dir_credits = 0;
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if (ev_port->cq_weight) {
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struct dlb2_enable_cq_weight_args cq_weight_args = {0};
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struct dlb2_enable_cq_weight_args
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cq_weight_args = { {0} };
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cq_weight_args.port_id = qm_port->id;
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cq_weight_args.limit = ev_port->cq_weight;
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@ -4450,7 +4500,6 @@ dlb2_primary_eventdev_probe(struct rte_eventdev *dev,
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dlb2->max_num_events_override = dlb2_args->max_num_events;
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dlb2->num_dir_credits_override = dlb2_args->num_dir_credits_override;
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dlb2->qm_instance.cos_id = dlb2_args->cos_id;
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dlb2->poll_interval = dlb2_args->poll_interval;
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dlb2->sw_credit_quanta = dlb2_args->sw_credit_quanta;
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dlb2->hw_credit_quanta = dlb2_args->hw_credit_quanta;
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@ -4482,6 +4531,28 @@ dlb2_primary_eventdev_probe(struct rte_eventdev *dev,
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dlb2_iface_hardware_init(&dlb2->qm_instance);
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/* configure class of service */
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{
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struct dlb2_set_cos_bw_args
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set_cos_bw_args = { {0} };
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int id;
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int ret = 0;
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for (id = 0; id < DLB2_COS_NUM_VALS; id++) {
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set_cos_bw_args.cos_id = id;
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set_cos_bw_args.cos_id = dlb2->cos_bw[id];
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ret = dlb2_iface_set_cos_bw(&dlb2->qm_instance,
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&set_cos_bw_args);
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if (ret != 0)
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break;
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}
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if (ret) {
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DLB2_LOG_ERR("dlb2: failed to configure class of service, err=%d\n",
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err);
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return err;
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}
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}
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err = dlb2_iface_get_cq_poll_mode(&dlb2->qm_instance, &dlb2->poll_mode);
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if (err < 0) {
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DLB2_LOG_ERR("dlb2: failed to get the poll mode, err=%d\n",
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@ -4512,6 +4583,12 @@ dlb2_primary_eventdev_probe(struct rte_eventdev *dev,
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dlb2_init_cq_weight(dlb2,
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dlb2_args->cq_weight.limit);
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dlb2_init_port_cos(dlb2,
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dlb2_args->port_cos.cos_id);
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dlb2_init_cos_bw(dlb2,
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&dlb2_args->cos_bw);
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return 0;
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}
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@ -4567,6 +4644,8 @@ dlb2_parse_params(const char *params,
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DLB2_VECTOR_OPTS_ENAB_ARG,
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DLB2_MAX_CQ_DEPTH,
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DLB2_CQ_WEIGHT,
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DLB2_PORT_COS,
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DLB2_COS_BW,
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NULL };
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if (params != NULL && params[0] != '\0') {
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@ -4639,16 +4718,6 @@ dlb2_parse_params(const char *params,
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return ret;
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}
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ret = rte_kvargs_process(kvlist, DLB2_COS_ARG,
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set_cos,
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&dlb2_args->cos_id);
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if (ret != 0) {
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DLB2_LOG_ERR("%s: Error parsing cos parameter",
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name);
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rte_kvargs_free(kvlist);
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return ret;
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}
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ret = rte_kvargs_process(kvlist, DLB2_POLL_INTERVAL_ARG,
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set_poll_interval,
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&dlb2_args->poll_interval);
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@ -4724,6 +4793,29 @@ dlb2_parse_params(const char *params,
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return ret;
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}
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ret = rte_kvargs_process(kvlist,
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DLB2_PORT_COS,
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set_port_cos,
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&dlb2_args->port_cos);
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if (ret != 0) {
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DLB2_LOG_ERR("%s: Error parsing port cos",
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name);
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rte_kvargs_free(kvlist);
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return ret;
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}
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ret = rte_kvargs_process(kvlist,
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DLB2_COS_BW,
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set_cos_bw,
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&dlb2_args->cos_bw);
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if (ret != 0) {
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DLB2_LOG_ERR("%s: Error parsing cos_bw",
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name);
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rte_kvargs_free(kvlist);
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return ret;
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}
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rte_kvargs_free(kvlist);
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}
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}
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@ -76,3 +76,6 @@ int (*dlb2_iface_get_dir_queue_depth)(struct dlb2_hw_dev *handle,
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int (*dlb2_iface_enable_cq_weight)(struct dlb2_hw_dev *handle,
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struct dlb2_enable_cq_weight_args *args);
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int (*dlb2_iface_set_cos_bw)(struct dlb2_hw_dev *handle,
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struct dlb2_set_cos_bw_args *args);
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@ -76,4 +76,7 @@ extern int (*dlb2_iface_get_dir_queue_depth)(struct dlb2_hw_dev *handle,
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extern int (*dlb2_iface_enable_cq_weight)(struct dlb2_hw_dev *handle,
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struct dlb2_enable_cq_weight_args *args);
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extern int (*dlb2_iface_set_cos_bw)(struct dlb2_hw_dev *handle,
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struct dlb2_set_cos_bw_args *args);
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#endif /* _DLB2_IFACE_H_ */
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@ -45,6 +45,8 @@
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#define DLB2_VECTOR_OPTS_ENAB_ARG "vector_opts_enable"
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#define DLB2_MAX_CQ_DEPTH "max_cq_depth"
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#define DLB2_CQ_WEIGHT "cq_weight"
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#define DLB2_PORT_COS "port_cos"
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#define DLB2_COS_BW "cos_bw"
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/* Begin HW related defines and structs */
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@ -416,7 +418,8 @@ enum dlb2_cos {
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DLB2_COS_0 = 0,
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DLB2_COS_1,
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DLB2_COS_2,
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DLB2_COS_3
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DLB2_COS_3,
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DLB2_COS_NUM_VALS
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};
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struct dlb2_hw_dev {
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@ -424,7 +427,6 @@ struct dlb2_hw_dev {
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struct dlb2_hw_resource_info info;
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void *pf_dev; /* opaque pointer to PF PMD dev (struct dlb2_dev) */
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uint32_t domain_id;
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enum dlb2_cos cos_id;
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rte_spinlock_t resource_lock; /* for MP support */
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} __rte_cache_aligned;
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@ -529,6 +531,7 @@ struct dlb2_eventdev_port {
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bool enq_configured;
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uint8_t implicit_release; /* release events before dequeuing */
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uint32_t cq_weight; /* DLB2.5 and above ldb ports only */
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int cos_id; /*ldb port class of service */
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} __rte_cache_aligned;
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struct dlb2_queue {
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@ -623,6 +626,8 @@ struct dlb2_eventdev {
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uint32_t credit_pool __rte_cache_aligned;
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};
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};
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uint32_t cos_ports[DLB2_COS_NUM_VALS]; /* total ldb ports in each class */
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uint32_t cos_bw[DLB2_COS_NUM_VALS]; /* bandwidth per cos domain */
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};
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/* used for collecting and passing around the dev args */
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@ -634,6 +639,14 @@ struct dlb2_cq_weight {
|
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int limit[DLB2_MAX_NUM_LDB_PORTS];
|
||||
};
|
||||
|
||||
struct dlb2_port_cos {
|
||||
int cos_id[DLB2_MAX_NUM_LDB_PORTS];
|
||||
};
|
||||
|
||||
struct dlb2_cos_bw {
|
||||
int val[DLB2_COS_NUM_VALS];
|
||||
};
|
||||
|
||||
struct dlb2_devargs {
|
||||
int socket_id;
|
||||
int max_num_events;
|
||||
@ -648,6 +661,8 @@ struct dlb2_devargs {
|
||||
bool vector_opts_enabled;
|
||||
int max_cq_depth;
|
||||
struct dlb2_cq_weight cq_weight;
|
||||
struct dlb2_port_cos port_cos;
|
||||
struct dlb2_cos_bw cos_bw;
|
||||
};
|
||||
|
||||
/* End Eventdev related defines and structs */
|
||||
|
||||
@ -6489,3 +6489,69 @@ int dlb2_hw_enable_cq_weight(struct dlb2_hw *hw,
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void dlb2_log_set_cos_bandwidth(struct dlb2_hw *hw, u32 cos_id, u8 bw)
|
||||
{
|
||||
DLB2_HW_DBG(hw, "DLB2 set port CoS bandwidth:\n");
|
||||
DLB2_HW_DBG(hw, "\tCoS ID: %u\n", cos_id);
|
||||
DLB2_HW_DBG(hw, "\tBandwidth: %u\n", bw);
|
||||
}
|
||||
|
||||
#define DLB2_MAX_BW_PCT 100
|
||||
|
||||
/**
|
||||
* dlb2_hw_set_cos_bandwidth() - set a bandwidth allocation percentage for a
|
||||
* port class-of-service.
|
||||
* @hw: dlb2_hw handle for a particular device.
|
||||
* @cos_id: class-of-service ID.
|
||||
* @bandwidth: class-of-service bandwidth.
|
||||
*
|
||||
* Return:
|
||||
* Returns 0 upon success, < 0 otherwise.
|
||||
*
|
||||
* Errors:
|
||||
* EINVAL - Invalid cos ID, bandwidth is greater than 100, or bandwidth would
|
||||
* cause the total bandwidth across all classes of service to exceed
|
||||
* 100%.
|
||||
*/
|
||||
int dlb2_hw_set_cos_bandwidth(struct dlb2_hw *hw, u32 cos_id, u8 bandwidth)
|
||||
{
|
||||
unsigned int i;
|
||||
u32 reg;
|
||||
u8 total;
|
||||
|
||||
if (cos_id >= DLB2_NUM_COS_DOMAINS)
|
||||
return -EINVAL;
|
||||
|
||||
if (bandwidth > DLB2_MAX_BW_PCT)
|
||||
return -EINVAL;
|
||||
|
||||
total = 0;
|
||||
|
||||
for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++)
|
||||
total += (i == cos_id) ? bandwidth : hw->cos_reservation[i];
|
||||
|
||||
if (total > DLB2_MAX_BW_PCT)
|
||||
return -EINVAL;
|
||||
|
||||
reg = DLB2_CSR_RD(hw, DLB2_LSP_CFG_SHDW_RANGE_COS(hw->ver, cos_id));
|
||||
|
||||
/*
|
||||
* Normalize the bandwidth to a value in the range 0-255. Integer
|
||||
* division may leave unreserved scheduling slots; these will be
|
||||
* divided among the 4 classes of service.
|
||||
*/
|
||||
DLB2_BITS_SET(reg, (bandwidth * 256) / 100, DLB2_LSP_CFG_SHDW_RANGE_COS_BW_RANGE);
|
||||
DLB2_CSR_WR(hw, DLB2_LSP_CFG_SHDW_RANGE_COS(hw->ver, cos_id), reg);
|
||||
|
||||
reg = 0;
|
||||
DLB2_BIT_SET(reg, DLB2_LSP_CFG_SHDW_CTRL_TRANSFER);
|
||||
/* Atomically transfer the newly configured service weight */
|
||||
DLB2_CSR_WR(hw, DLB2_LSP_CFG_SHDW_CTRL(hw->ver), reg);
|
||||
|
||||
dlb2_log_set_cos_bandwidth(hw, cos_id, bandwidth);
|
||||
|
||||
hw->cos_reservation[cos_id] = bandwidth;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -646,6 +646,25 @@ dlb2_pf_enable_cq_weight(struct dlb2_hw_dev *handle,
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int
|
||||
dlb2_pf_set_cos_bandwidth(struct dlb2_hw_dev *handle,
|
||||
struct dlb2_set_cos_bw_args *args)
|
||||
{
|
||||
struct dlb2_dev *dlb2_dev = (struct dlb2_dev *)handle->pf_dev;
|
||||
int ret = 0;
|
||||
|
||||
DLB2_INFO(dev->dlb2_device, "Entering %s()\n", __func__);
|
||||
|
||||
ret = dlb2_hw_set_cos_bandwidth(&dlb2_dev->hw,
|
||||
args->cos_id,
|
||||
args->bandwidth);
|
||||
|
||||
DLB2_INFO(dev->dlb2_device, "Exiting %s() with ret=%d\n",
|
||||
__func__, ret);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void
|
||||
dlb2_pf_iface_fn_ptrs_init(void)
|
||||
{
|
||||
@ -671,6 +690,7 @@ dlb2_pf_iface_fn_ptrs_init(void)
|
||||
dlb2_iface_set_sn_allocation = dlb2_pf_set_sn_allocation;
|
||||
dlb2_iface_get_sn_occupancy = dlb2_pf_get_sn_occupancy;
|
||||
dlb2_iface_enable_cq_weight = dlb2_pf_enable_cq_weight;
|
||||
dlb2_iface_set_cos_bw = dlb2_pf_set_cos_bandwidth;
|
||||
}
|
||||
|
||||
/* PCI DEV HOOKS */
|
||||
@ -684,7 +704,6 @@ dlb2_eventdev_pci_init(struct rte_eventdev *eventdev)
|
||||
.max_num_events = DLB2_MAX_NUM_LDB_CREDITS,
|
||||
.num_dir_credits_override = -1,
|
||||
.qid_depth_thresholds = { {0} },
|
||||
.cos_id = DLB2_COS_DEFAULT,
|
||||
.poll_interval = DLB2_POLL_INTERVAL_DEFAULT,
|
||||
.sw_credit_quanta = DLB2_SW_CREDIT_QUANTA_DEFAULT,
|
||||
.hw_credit_quanta = DLB2_SW_CREDIT_BATCH_SZ,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user