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sfxge(4): support improvements to bandwidth calculations

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Change the interface to ef10_nic_get_port_mode_bandwidth()
so more NIC information can be used to infer bandwidth
requirements. Huntington calculations separated out
completely.

Submitted by:   Richard Houldsworth <rhouldsworth at solarflare.com>
Sponsored by:   Solarflare Communications, Inc.
Differential Revision:  https://reviews.freebsd.org/D18278
This commit is contained in:
Andrew Rybchenko 2018-11-30 07:09:11 +00:00
parent 7e370b0ea7
commit c42b6a3560
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=341316
5 changed files with 19 additions and 36 deletions
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2
sys/dev/sfxge/common/ef10_impl.h
View file

@ -1200,7 +1200,7 @@ efx_mcdi_get_port_modes(
extern __checkReturn efx_rc_t
ef10_nic_get_port_mode_bandwidth(
__in uint32_t port_mode,
__in efx_nic_t *enp,
__out uint32_t *bandwidth_mbpsp);
extern __checkReturn efx_rc_t

16
sys/dev/sfxge/common/ef10_nic.c
View file

@ -155,16 +155,24 @@ efx_mcdi_get_port_modes(
__checkReturn efx_rc_t
ef10_nic_get_port_mode_bandwidth(
__in uint32_t port_mode,
__in efx_nic_t *enp,
__out uint32_t *bandwidth_mbpsp)
{
uint32_t port_modes;
uint32_t current_mode;
uint32_t single_lane = 10000;
uint32_t dual_lane = 50000;
uint32_t quad_lane = 40000;
uint32_t bandwidth;
efx_rc_t rc;
switch (port_mode) {
if ((rc = efx_mcdi_get_port_modes(enp, &port_modes,
&current_mode, NULL)) != 0) {
/* No port mode info available. */
goto fail1;
}
switch (current_mode) {
case TLV_PORT_MODE_1x1_NA: /* mode 0 */
bandwidth = single_lane;
break;
@ -214,13 +222,15 @@ ef10_nic_get_port_mode_bandwidth(
break;
default:
rc = EINVAL;
goto fail1;
goto fail2;
}
*bandwidth_mbpsp = bandwidth;
return (0);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, efx_rc_t, rc);

13
sys/dev/sfxge/common/hunt_nic.c
View file

@ -47,7 +47,6 @@ hunt_nic_get_required_pcie_bandwidth(
__out uint32_t *bandwidth_mbpsp)
{
uint32_t port_modes;
uint32_t max_port_mode;
uint32_t bandwidth;
efx_rc_t rc;
@ -74,17 +73,13 @@ hunt_nic_get_required_pcie_bandwidth(
goto fail1;
} else {
if (port_modes & (1U << TLV_PORT_MODE_40G)) {
max_port_mode = TLV_PORT_MODE_40G;
bandwidth = 40000;
} else if (port_modes & (1U << TLV_PORT_MODE_10G_10G_10G_10G)) {
max_port_mode = TLV_PORT_MODE_10G_10G_10G_10G;
bandwidth = 4 * 10000;
} else {
/* Assume two 10G ports */
max_port_mode = TLV_PORT_MODE_10G_10G;
bandwidth = 2 * 10000;
}
if ((rc = ef10_nic_get_port_mode_bandwidth(max_port_mode,
&bandwidth)) != 0)
goto fail2;
}
out:
@ -92,8 +87,6 @@ hunt_nic_get_required_pcie_bandwidth(
return (0);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, efx_rc_t, rc);

12
sys/dev/sfxge/common/medford2_nic.c
View file

@ -44,25 +44,15 @@ medford2_nic_get_required_pcie_bandwidth(
__in efx_nic_t *enp,
__out uint32_t *bandwidth_mbpsp)
{
uint32_t port_modes;
uint32_t current_mode;
uint32_t bandwidth;
efx_rc_t rc;
/* FIXME: support new Medford2 dynamic port modes */
if ((rc = efx_mcdi_get_port_modes(enp, &port_modes,
&current_mode, NULL)) != 0) {
/* No port mode info available. */
bandwidth = 0;
goto out;
}
if ((rc = ef10_nic_get_port_mode_bandwidth(current_mode,
if ((rc = ef10_nic_get_port_mode_bandwidth(enp,
&bandwidth)) != 0)
goto fail1;
out:
*bandwidth_mbpsp = bandwidth;
return (0);

12
sys/dev/sfxge/common/medford_nic.c
View file

@ -42,23 +42,13 @@ medford_nic_get_required_pcie_bandwidth(
__in efx_nic_t *enp,
__out uint32_t *bandwidth_mbpsp)
{
uint32_t port_modes;
uint32_t current_mode;
uint32_t bandwidth;
efx_rc_t rc;
if ((rc = efx_mcdi_get_port_modes(enp, &port_modes,
&current_mode, NULL)) != 0) {
/* No port mode info available. */
bandwidth = 0;
goto out;
}
if ((rc = ef10_nic_get_port_mode_bandwidth(current_mode,
if ((rc = ef10_nic_get_port_mode_bandwidth(enp,
&bandwidth)) != 0)
goto fail1;
out:
*bandwidth_mbpsp = bandwidth;
return (0);