From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: stable@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
patches@lists.linux.dev,
Nithin Dabilpuram <ndabilpuram@marvell.com>,
Sunil Goutham <sgoutham@marvell.com>,
Geetha Sowjanya <gakula@marvell.com>,
"David S. Miller" <davem@davemloft.net>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.15 36/59] octeontx2-af: Set NIX link credits based on max LMAC
Date: Sat, 13 Jan 2024 10:50:07 +0100 [thread overview]
Message-ID: <20240113094210.415849316@linuxfoundation.org> (raw)
In-Reply-To: <20240113094209.301672391@linuxfoundation.org>
5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sunil Goutham <sgoutham@marvell.com>
[ Upstream commit 459f326e995ce6f02f3dc79ca5bc4e2abe33d156 ]
When number of LMACs active on a CGX/RPM are 3, then
current NIX link credit config based on per lmac fifo
length which inturn is calculated as
'lmac_fifo_len = total_fifo_len / 3', is incorrect. In HW
one of the LMAC gets half of the FIFO and rest gets 1/4th.
Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Geetha Sowjanya <gakula@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: a0d9528f6daf ("octeontx2-af: Always configure NIX TX link credits based on max frame size")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../net/ethernet/marvell/octeontx2/af/cgx.c | 27 +++++++++++++++
.../marvell/octeontx2/af/lmac_common.h | 1 +
.../net/ethernet/marvell/octeontx2/af/rpm.c | 30 ++++++++++++++++
.../net/ethernet/marvell/octeontx2/af/rpm.h | 1 +
.../net/ethernet/marvell/octeontx2/af/rvu.h | 2 +-
.../ethernet/marvell/octeontx2/af/rvu_cgx.c | 16 +++++++++
.../ethernet/marvell/octeontx2/af/rvu_nix.c | 34 ++++++++++++++-----
7 files changed, 102 insertions(+), 9 deletions(-)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
index 098504aa0fd2b..1a269a2e61fdb 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
@@ -505,6 +505,32 @@ static u8 cgx_get_lmac_type(void *cgxd, int lmac_id)
return (cfg >> CGX_LMAC_TYPE_SHIFT) & CGX_LMAC_TYPE_MASK;
}
+static u32 cgx_get_lmac_fifo_len(void *cgxd, int lmac_id)
+{
+ struct cgx *cgx = cgxd;
+ u8 num_lmacs;
+ u32 fifo_len;
+
+ fifo_len = cgx->mac_ops->fifo_len;
+ num_lmacs = cgx->mac_ops->get_nr_lmacs(cgx);
+
+ switch (num_lmacs) {
+ case 1:
+ return fifo_len;
+ case 2:
+ return fifo_len / 2;
+ case 3:
+ /* LMAC0 gets half of the FIFO, reset 1/4th */
+ if (lmac_id == 0)
+ return fifo_len / 2;
+ return fifo_len / 4;
+ case 4:
+ default:
+ return fifo_len / 4;
+ }
+ return 0;
+}
+
/* Configure CGX LMAC in internal loopback mode */
int cgx_lmac_internal_loopback(void *cgxd, int lmac_id, bool enable)
{
@@ -1557,6 +1583,7 @@ static struct mac_ops cgx_mac_ops = {
.tx_stats_cnt = 18,
.get_nr_lmacs = cgx_get_nr_lmacs,
.get_lmac_type = cgx_get_lmac_type,
+ .lmac_fifo_len = cgx_get_lmac_fifo_len,
.mac_lmac_intl_lbk = cgx_lmac_internal_loopback,
.mac_get_rx_stats = cgx_get_rx_stats,
.mac_get_tx_stats = cgx_get_tx_stats,
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/lmac_common.h b/drivers/net/ethernet/marvell/octeontx2/af/lmac_common.h
index b33e7d1d0851c..f6eb9fec1e8d6 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/lmac_common.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/lmac_common.h
@@ -76,6 +76,7 @@ struct mac_ops {
*/
int (*get_nr_lmacs)(void *cgx);
u8 (*get_lmac_type)(void *cgx, int lmac_id);
+ u32 (*lmac_fifo_len)(void *cgx, int lmac_id);
int (*mac_lmac_intl_lbk)(void *cgx, int lmac_id,
bool enable);
/* Register Stats related functions */
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rpm.c b/drivers/net/ethernet/marvell/octeontx2/af/rpm.c
index 8c0b35a868cfe..3ac26ba31e2f3 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rpm.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rpm.c
@@ -22,6 +22,7 @@ static struct mac_ops rpm_mac_ops = {
.tx_stats_cnt = 34,
.get_nr_lmacs = rpm_get_nr_lmacs,
.get_lmac_type = rpm_get_lmac_type,
+ .lmac_fifo_len = rpm_get_lmac_fifo_len,
.mac_lmac_intl_lbk = rpm_lmac_internal_loopback,
.mac_get_rx_stats = rpm_get_rx_stats,
.mac_get_tx_stats = rpm_get_tx_stats,
@@ -261,6 +262,35 @@ u8 rpm_get_lmac_type(void *rpmd, int lmac_id)
return err;
}
+u32 rpm_get_lmac_fifo_len(void *rpmd, int lmac_id)
+{
+ rpm_t *rpm = rpmd;
+ u64 hi_perf_lmac;
+ u8 num_lmacs;
+ u32 fifo_len;
+
+ fifo_len = rpm->mac_ops->fifo_len;
+ num_lmacs = rpm->mac_ops->get_nr_lmacs(rpm);
+
+ switch (num_lmacs) {
+ case 1:
+ return fifo_len;
+ case 2:
+ return fifo_len / 2;
+ case 3:
+ /* LMAC marked as hi_perf gets half of the FIFO and rest 1/4th */
+ hi_perf_lmac = rpm_read(rpm, 0, CGXX_CMRX_RX_LMACS);
+ hi_perf_lmac = (hi_perf_lmac >> 4) & 0x3ULL;
+ if (lmac_id == hi_perf_lmac)
+ return fifo_len / 2;
+ return fifo_len / 4;
+ case 4:
+ default:
+ return fifo_len / 4;
+ }
+ return 0;
+}
+
int rpm_lmac_internal_loopback(void *rpmd, int lmac_id, bool enable)
{
rpm_t *rpm = rpmd;
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rpm.h b/drivers/net/ethernet/marvell/octeontx2/af/rpm.h
index ff580311edd03..39e9a1d068353 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rpm.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rpm.h
@@ -49,6 +49,7 @@
/* Function Declarations */
int rpm_get_nr_lmacs(void *rpmd);
u8 rpm_get_lmac_type(void *rpmd, int lmac_id);
+u32 rpm_get_lmac_fifo_len(void *rpmd, int lmac_id);
int rpm_lmac_internal_loopback(void *rpmd, int lmac_id, bool enable);
void rpm_lmac_enadis_rx_pause_fwding(void *rpmd, int lmac_id, bool enable);
int rpm_lmac_get_pause_frm_status(void *cgxd, int lmac_id, u8 *tx_pause,
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
index 9d517e6dac2f0..8d1df8a70ae0d 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
@@ -813,7 +813,7 @@ u32 rvu_cgx_get_fifolen(struct rvu *rvu);
void *rvu_first_cgx_pdata(struct rvu *rvu);
int cgxlmac_to_pf(struct rvu *rvu, int cgx_id, int lmac_id);
int rvu_cgx_config_tx(void *cgxd, int lmac_id, bool enable);
-
+u32 rvu_cgx_get_lmac_fifolen(struct rvu *rvu, int cgx, int lmac);
int npc_get_nixlf_mcam_index(struct npc_mcam *mcam, u16 pcifunc, int nixlf,
int type);
bool is_mcam_entry_enabled(struct rvu *rvu, struct npc_mcam *mcam, int blkaddr,
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
index f4c7bb6bf053a..4bd511b007cbc 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
@@ -831,6 +831,22 @@ u32 rvu_cgx_get_fifolen(struct rvu *rvu)
return fifo_len;
}
+u32 rvu_cgx_get_lmac_fifolen(struct rvu *rvu, int cgx, int lmac)
+{
+ struct mac_ops *mac_ops;
+ void *cgxd;
+
+ cgxd = rvu_cgx_pdata(cgx, rvu);
+ if (!cgxd)
+ return 0;
+
+ mac_ops = get_mac_ops(cgxd);
+ if (!mac_ops->lmac_fifo_len)
+ return 0;
+
+ return mac_ops->lmac_fifo_len(cgxd, lmac);
+}
+
static int rvu_cgx_config_intlbk(struct rvu *rvu, u16 pcifunc, bool en)
{
int pf = rvu_get_pf(pcifunc);
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
index 1ab9dc544eeea..874248499ef9a 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
@@ -4036,9 +4036,13 @@ int rvu_mbox_handler_nix_set_hw_frs(struct rvu *rvu, struct nix_frs_cfg *req,
return 0;
/* Update transmit credits for CGX links */
- lmac_fifo_len =
- rvu_cgx_get_fifolen(rvu) /
- cgx_get_lmac_cnt(rvu_cgx_pdata(cgx, rvu));
+ lmac_fifo_len = rvu_cgx_get_lmac_fifolen(rvu, cgx, lmac);
+ if (!lmac_fifo_len) {
+ dev_err(rvu->dev,
+ "%s: Failed to get CGX/RPM%d:LMAC%d FIFO size\n",
+ __func__, cgx, lmac);
+ return 0;
+ }
return nix_config_link_credits(rvu, blkaddr, link, pcifunc,
(lmac_fifo_len - req->maxlen) / 16);
}
@@ -4086,7 +4090,10 @@ static void nix_link_config(struct rvu *rvu, int blkaddr,
struct rvu_hwinfo *hw = rvu->hw;
int cgx, lmac_cnt, slink, link;
u16 lbk_max_frs, lmac_max_frs;
+ unsigned long lmac_bmap;
u64 tx_credits, cfg;
+ u64 lmac_fifo_len;
+ int iter;
rvu_get_lbk_link_max_frs(rvu, &lbk_max_frs);
rvu_get_lmac_link_max_frs(rvu, &lmac_max_frs);
@@ -4120,12 +4127,23 @@ static void nix_link_config(struct rvu *rvu, int blkaddr,
/* Skip when cgx is not available or lmac cnt is zero */
if (lmac_cnt <= 0)
continue;
- tx_credits = ((rvu_cgx_get_fifolen(rvu) / lmac_cnt) -
- lmac_max_frs) / 16;
- /* Enable credits and set credit pkt count to max allowed */
- cfg = (tx_credits << 12) | (0x1FF << 2) | BIT_ULL(1);
slink = cgx * hw->lmac_per_cgx;
- for (link = slink; link < (slink + lmac_cnt); link++) {
+
+ /* Get LMAC id's from bitmap */
+ lmac_bmap = cgx_get_lmac_bmap(rvu_cgx_pdata(cgx, rvu));
+ for_each_set_bit(iter, &lmac_bmap, MAX_LMAC_PER_CGX) {
+ lmac_fifo_len = rvu_cgx_get_lmac_fifolen(rvu, cgx, iter);
+ if (!lmac_fifo_len) {
+ dev_err(rvu->dev,
+ "%s: Failed to get CGX/RPM%d:LMAC%d FIFO size\n",
+ __func__, cgx, iter);
+ continue;
+ }
+ tx_credits = (lmac_fifo_len - lmac_max_frs) / 16;
+ /* Enable credits and set credit pkt count to max allowed */
+ cfg = (tx_credits << 12) | (0x1FF << 2) | BIT_ULL(1);
+
+ link = iter + slink;
nix_hw->tx_credits[link] = tx_credits;
rvu_write64(rvu, blkaddr,
NIX_AF_TX_LINKX_NORM_CREDIT(link), cfg);
--
2.43.0
next prev parent reply other threads:[~2024-01-13 10:00 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-13 9:49 [PATCH 5.15 00/59] 5.15.147-rc1 review Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 01/59] keys, dns: Fix missing size check of V1 server-list header Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 02/59] block: Dont invalidate pagecache for invalid falloc modes Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 03/59] ALSA: hda/realtek: Fix mute and mic-mute LEDs for HP ProBook 440 G6 Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 04/59] Revert "PCI/ASPM: Remove pcie_aspm_pm_state_change()" Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 05/59] wifi: iwlwifi: pcie: dont synchronize IRQs from IRQ Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 06/59] drm/bridge: ti-sn65dsi86: Never store more than msg->size bytes in AUX xfer Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 07/59] nfc: llcp_core: Hold a ref to llcp_local->dev when holding a ref to llcp_local Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 08/59] octeontx2-af: Fix marking couple of structure as __packed Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 09/59] drm/i915/dp: Fix passing the correct DPCD_REV for drm_dp_set_phy_test_pattern Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 10/59] i40e: Fix filter input checks to prevent config with invalid values Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 11/59] igc: Report VLAN EtherType matching back to user Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 12/59] igc: Check VLAN TCI mask Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 13/59] igc: Check VLAN EtherType mask Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 14/59] ASoC: fsl_rpmsg: Fix error handler with pm_runtime_enable Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 15/59] mlxbf_gige: fix receive packet race condition Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 16/59] net: sched: em_text: fix possible memory leak in em_text_destroy() Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 17/59] r8169: Fix PCI error on system resume Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 18/59] net: Implement missing getsockopt(SO_TIMESTAMPING_NEW) Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 19/59] can: raw: add support for SO_TXTIME/SCM_TXTIME Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 20/59] can: raw: add support for SO_MARK Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 21/59] net-timestamp: extend SOF_TIMESTAMPING_OPT_ID to HW timestamps Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 22/59] ARM: sun9i: smp: Fix array-index-out-of-bounds read in sunxi_mc_smp_init Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 23/59] sfc: fix a double-free bug in efx_probe_filters Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 24/59] net: bcmgenet: Fix FCS generation for fragmented skbuffs Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 25/59] netfilter: nft_immediate: drop chain reference counter on error Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 26/59] net: Save and restore msg_namelen in sock_sendmsg Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 27/59] i40e: fix use-after-free in i40e_aqc_add_filters() Greg Kroah-Hartman
2024-01-13 9:49 ` [PATCH 5.15 28/59] ASoC: meson: g12a-toacodec: Validate written enum values Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 29/59] ASoC: meson: g12a-tohdmitx: " Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 30/59] ASoC: meson: g12a-toacodec: Fix event generation Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 31/59] ASoC: meson: g12a-tohdmitx: Fix event generation for S/PDIF mux Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 32/59] i40e: Restore VF MSI-X state during PCI reset Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 33/59] igc: Fix hicredit calculation Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 34/59] net/qla3xxx: fix potential memleak in ql_alloc_buffer_queues Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 35/59] octeontx2-af: Dont enable Pause frames by default Greg Kroah-Hartman
2024-01-13 9:50 ` Greg Kroah-Hartman [this message]
2024-01-13 9:50 ` [PATCH 5.15 37/59] octeontx2-af: Always configure NIX TX link credits based on max frame size Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 38/59] octeontx2-af: Re-enable MAC TX in otx2_stop processing Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 39/59] asix: Add check for usbnet_get_endpoints Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 40/59] bnxt_en: Remove mis-applied code from bnxt_cfg_ntp_filters() Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 41/59] net: Implement missing SO_TIMESTAMPING_NEW cmsg support Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 42/59] selftests: secretmem: floor the memory size to the multiple of page_size Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 43/59] mm/memory-failure: check the mapcount of the precise page Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 44/59] firewire: ohci: suppress unexpected system reboot in AMD Ryzen machines and ASM108x/VT630x PCIe cards Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 45/59] x86/kprobes: fix incorrect return address calculation in kprobe_emulate_call_indirect Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 46/59] i2c: core: Fix atomic xfer check for non-preempt config Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 47/59] mm: fix unmap_mapping_range high bits shift bug Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 48/59] mmc: meson-mx-sdhc: Fix initialization frozen issue Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 49/59] mmc: rpmb: fixes pause retune on all RPMB partitions Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 50/59] mmc: core: Cancel delayed work before releasing host Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 51/59] mmc: sdhci-sprd: Fix eMMC init failure after hw reset Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 52/59] net: tls, update curr on splice as well Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 53/59] ipv6: remove max_size check inline with ipv4 Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 54/59] perf inject: Fix GEN_ELF_TEXT_OFFSET for jit Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 55/59] netfilter: nf_tables: Reject tables of unsupported family Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 56/59] kallsyms: Make module_kallsyms_on_each_symbol generally available Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 57/59] tracing/kprobes: Fix symbol counting logic by looking at modules as well Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 58/59] net: usb: ax88179_178a: remove redundant init code Greg Kroah-Hartman
2024-01-13 9:50 ` [PATCH 5.15 59/59] net: usb: ax88179_178a: move priv to driver_priv Greg Kroah-Hartman
2024-01-13 18:42 ` [PATCH 5.15 00/59] 5.15.147-rc1 review SeongJae Park
2024-01-14 9:41 ` Ron Economos
2024-01-15 10:01 ` Naresh Kamboju
2024-01-15 10:23 ` Jon Hunter
2024-01-15 11:35 ` Shreeya Patel
2024-01-15 16:26 ` Harshit Mogalapalli
2024-01-15 19:09 ` Florian Fainelli
2024-01-15 19:47 ` Allen
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