Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 332 insertions, 0 deletions

diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_psfp.c b/drivers/net/ethernet/microchip/sparx5/sparx5_psfp.c
new file mode 100644
index 0000000000..8dee1ab1fa
--- /dev/null
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_psfp.c
@@ -0,0 +1,332 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Microchip Sparx5 Switch driver
+ *
+ * Copyright (c) 2023 Microchip Technology Inc. and its subsidiaries.
+ */
+
+#include "sparx5_main_regs.h"
+#include "sparx5_main.h"
+
+#define SPX5_PSFP_SF_CNT 1024
+#define SPX5_PSFP_SG_CONFIG_CHANGE_SLEEP 1000
+#define SPX5_PSFP_SG_CONFIG_CHANGE_TIMEO 100000
+
+/* Pool of available service policers */
+static struct sparx5_pool_entry sparx5_psfp_fm_pool[SPX5_SDLB_CNT];
+
+/* Pool of available stream gates */
+static struct sparx5_pool_entry sparx5_psfp_sg_pool[SPX5_PSFP_SG_CNT];
+
+/* Pool of available stream filters */
+static struct sparx5_pool_entry sparx5_psfp_sf_pool[SPX5_PSFP_SF_CNT];
+
+static int sparx5_psfp_sf_get(u32 *id)
+{
+	return sparx5_pool_get(sparx5_psfp_sf_pool, SPX5_PSFP_SF_CNT, id);
+}
+
+static int sparx5_psfp_sf_put(u32 id)
+{
+	return sparx5_pool_put(sparx5_psfp_sf_pool, SPX5_PSFP_SF_CNT, id);
+}
+
+static int sparx5_psfp_sg_get(u32 idx, u32 *id)
+{
+	return sparx5_pool_get_with_idx(sparx5_psfp_sg_pool, SPX5_PSFP_SG_CNT,
+					idx, id);
+}
+
+static int sparx5_psfp_sg_put(u32 id)
+{
+	return sparx5_pool_put(sparx5_psfp_sg_pool, SPX5_PSFP_SG_CNT, id);
+}
+
+static int sparx5_psfp_fm_get(u32 idx, u32 *id)
+{
+	return sparx5_pool_get_with_idx(sparx5_psfp_fm_pool, SPX5_SDLB_CNT, idx,
+					id);
+}
+
+static int sparx5_psfp_fm_put(u32 id)
+{
+	return sparx5_pool_put(sparx5_psfp_fm_pool, SPX5_SDLB_CNT, id);
+}
+
+u32 sparx5_psfp_isdx_get_sf(struct sparx5 *sparx5, u32 isdx)
+{
+	return ANA_L2_TSN_CFG_TSN_SFID_GET(spx5_rd(sparx5,
+						   ANA_L2_TSN_CFG(isdx)));
+}
+
+u32 sparx5_psfp_isdx_get_fm(struct sparx5 *sparx5, u32 isdx)
+{
+	return ANA_L2_DLB_CFG_DLB_IDX_GET(spx5_rd(sparx5,
+						  ANA_L2_DLB_CFG(isdx)));
+}
+
+u32 sparx5_psfp_sf_get_sg(struct sparx5 *sparx5, u32 sfid)
+{
+	return ANA_AC_TSN_SF_CFG_TSN_SGID_GET(spx5_rd(sparx5,
+						      ANA_AC_TSN_SF_CFG(sfid)));
+}
+
+void sparx5_isdx_conf_set(struct sparx5 *sparx5, u32 isdx, u32 sfid, u32 fmid)
+{
+	spx5_rmw(ANA_L2_TSN_CFG_TSN_SFID_SET(sfid), ANA_L2_TSN_CFG_TSN_SFID,
+		 sparx5, ANA_L2_TSN_CFG(isdx));
+
+	spx5_rmw(ANA_L2_DLB_CFG_DLB_IDX_SET(fmid), ANA_L2_DLB_CFG_DLB_IDX,
+		 sparx5, ANA_L2_DLB_CFG(isdx));
+}
+
+/* Internal priority value to internal priority selector */
+static u32 sparx5_psfp_ipv_to_ips(s32 ipv)
+{
+	return ipv > 0 ? (ipv | BIT(3)) : 0;
+}
+
+static int sparx5_psfp_sgid_get_status(struct sparx5 *sparx5)
+{
+	return spx5_rd(sparx5, ANA_AC_SG_ACCESS_CTRL);
+}
+
+static int sparx5_psfp_sgid_wait_for_completion(struct sparx5 *sparx5)
+{
+	u32 val;
+
+	return readx_poll_timeout(sparx5_psfp_sgid_get_status, sparx5, val,
+				  !ANA_AC_SG_ACCESS_CTRL_CONFIG_CHANGE_GET(val),
+				  SPX5_PSFP_SG_CONFIG_CHANGE_SLEEP,
+				  SPX5_PSFP_SG_CONFIG_CHANGE_TIMEO);
+}
+
+static void sparx5_psfp_sg_config_change(struct sparx5 *sparx5, u32 id)
+{
+	spx5_wr(ANA_AC_SG_ACCESS_CTRL_SGID_SET(id), sparx5,
+		ANA_AC_SG_ACCESS_CTRL);
+
+	spx5_wr(ANA_AC_SG_ACCESS_CTRL_CONFIG_CHANGE_SET(1) |
+		ANA_AC_SG_ACCESS_CTRL_SGID_SET(id),
+		sparx5, ANA_AC_SG_ACCESS_CTRL);
+
+	if (sparx5_psfp_sgid_wait_for_completion(sparx5) < 0)
+		pr_debug("%s:%d timed out waiting for sgid completion",
+			 __func__, __LINE__);
+}
+
+static void sparx5_psfp_sf_set(struct sparx5 *sparx5, u32 id,
+			       const struct sparx5_psfp_sf *sf)
+{
+	/* Configure stream gate*/
+	spx5_rmw(ANA_AC_TSN_SF_CFG_TSN_SGID_SET(sf->sgid) |
+		ANA_AC_TSN_SF_CFG_TSN_MAX_SDU_SET(sf->max_sdu) |
+		ANA_AC_TSN_SF_CFG_BLOCK_OVERSIZE_STATE_SET(sf->sblock_osize) |
+		ANA_AC_TSN_SF_CFG_BLOCK_OVERSIZE_ENA_SET(sf->sblock_osize_ena),
+		ANA_AC_TSN_SF_CFG_TSN_SGID | ANA_AC_TSN_SF_CFG_TSN_MAX_SDU |
+		ANA_AC_TSN_SF_CFG_BLOCK_OVERSIZE_STATE |
+		ANA_AC_TSN_SF_CFG_BLOCK_OVERSIZE_ENA,
+		sparx5, ANA_AC_TSN_SF_CFG(id));
+}
+
+static int sparx5_psfp_sg_set(struct sparx5 *sparx5, u32 id,
+			      const struct sparx5_psfp_sg *sg)
+{
+	u32 ips, base_lsb, base_msb, accum_time_interval = 0;
+	const struct sparx5_psfp_gce *gce;
+	int i;
+
+	ips = sparx5_psfp_ipv_to_ips(sg->ipv);
+	base_lsb = sg->basetime.tv_sec & 0xffffffff;
+	base_msb = sg->basetime.tv_sec >> 32;
+
+	/* Set stream gate id */
+	spx5_wr(ANA_AC_SG_ACCESS_CTRL_SGID_SET(id), sparx5,
+		ANA_AC_SG_ACCESS_CTRL);
+
+	/* Write AdminPSFP values */
+	spx5_wr(sg->basetime.tv_nsec, sparx5, ANA_AC_SG_CONFIG_REG_1);
+	spx5_wr(base_lsb, sparx5, ANA_AC_SG_CONFIG_REG_2);
+
+	spx5_rmw(ANA_AC_SG_CONFIG_REG_3_BASE_TIME_SEC_MSB_SET(base_msb) |
+		ANA_AC_SG_CONFIG_REG_3_INIT_IPS_SET(ips) |
+		ANA_AC_SG_CONFIG_REG_3_LIST_LENGTH_SET(sg->num_entries) |
+		ANA_AC_SG_CONFIG_REG_3_INIT_GATE_STATE_SET(sg->gate_state) |
+		ANA_AC_SG_CONFIG_REG_3_GATE_ENABLE_SET(1),
+		ANA_AC_SG_CONFIG_REG_3_BASE_TIME_SEC_MSB |
+		ANA_AC_SG_CONFIG_REG_3_INIT_IPS |
+		ANA_AC_SG_CONFIG_REG_3_LIST_LENGTH |
+		ANA_AC_SG_CONFIG_REG_3_INIT_GATE_STATE |
+		ANA_AC_SG_CONFIG_REG_3_GATE_ENABLE,
+		sparx5, ANA_AC_SG_CONFIG_REG_3);
+
+	spx5_wr(sg->cycletime, sparx5, ANA_AC_SG_CONFIG_REG_4);
+	spx5_wr(sg->cycletimeext, sparx5, ANA_AC_SG_CONFIG_REG_5);
+
+	/* For each scheduling entry */
+	for (i = 0; i < sg->num_entries; i++) {
+		gce = &sg->gce[i];
+		ips = sparx5_psfp_ipv_to_ips(gce->ipv);
+		/* hardware needs TimeInterval to be cumulative */
+		accum_time_interval += gce->interval;
+		/* Set gate state */
+		spx5_wr(ANA_AC_SG_GCL_GS_CONFIG_IPS_SET(ips) |
+			ANA_AC_SG_GCL_GS_CONFIG_GATE_STATE_SET(gce->gate_state),
+			sparx5, ANA_AC_SG_GCL_GS_CONFIG(i));
+
+		/* Set time interval */
+		spx5_wr(accum_time_interval, sparx5,
+			ANA_AC_SG_GCL_TI_CONFIG(i));
+
+		/* Set maximum octets */
+		spx5_wr(gce->maxoctets, sparx5, ANA_AC_SG_GCL_OCT_CONFIG(i));
+	}
+
+	return 0;
+}
+
+static int sparx5_sdlb_conf_set(struct sparx5 *sparx5,
+				struct sparx5_psfp_fm *fm)
+{
+	int (*sparx5_sdlb_group_action)(struct sparx5 *sparx5, u32 group,
+					u32 idx);
+
+	if (!fm->pol.rate && !fm->pol.burst)
+		sparx5_sdlb_group_action = &sparx5_sdlb_group_del;
+	else
+		sparx5_sdlb_group_action = &sparx5_sdlb_group_add;
+
+	sparx5_policer_conf_set(sparx5, &fm->pol);
+
+	return sparx5_sdlb_group_action(sparx5, fm->pol.group, fm->pol.idx);
+}
+
+int sparx5_psfp_sf_add(struct sparx5 *sparx5, const struct sparx5_psfp_sf *sf,
+		       u32 *id)
+{
+	int ret;
+
+	ret = sparx5_psfp_sf_get(id);
+	if (ret < 0)
+		return ret;
+
+	sparx5_psfp_sf_set(sparx5, *id, sf);
+
+	return 0;
+}
+
+int sparx5_psfp_sf_del(struct sparx5 *sparx5, u32 id)
+{
+	const struct sparx5_psfp_sf sf = { 0 };
+
+	sparx5_psfp_sf_set(sparx5, id, &sf);
+
+	return sparx5_psfp_sf_put(id);
+}
+
+int sparx5_psfp_sg_add(struct sparx5 *sparx5, u32 uidx,
+		       struct sparx5_psfp_sg *sg, u32 *id)
+{
+	ktime_t basetime;
+	int ret;
+
+	ret = sparx5_psfp_sg_get(uidx, id);
+	if (ret < 0)
+		return ret;
+	/* Was already in use, no need to reconfigure */
+	if (ret > 1)
+		return 0;
+
+	/* Calculate basetime for this stream gate */
+	sparx5_new_base_time(sparx5, sg->cycletime, 0, &basetime);
+	sg->basetime = ktime_to_timespec64(basetime);
+
+	sparx5_psfp_sg_set(sparx5, *id, sg);
+
+	/* Signal hardware to copy AdminPSFP values into OperPSFP values */
+	sparx5_psfp_sg_config_change(sparx5, *id);
+
+	return 0;
+}
+
+int sparx5_psfp_sg_del(struct sparx5 *sparx5, u32 id)
+{
+	const struct sparx5_psfp_sg sg = { 0 };
+	int ret;
+
+	ret = sparx5_psfp_sg_put(id);
+	if (ret < 0)
+		return ret;
+	/* Stream gate still in use ? */
+	if (ret > 0)
+		return 0;
+
+	return sparx5_psfp_sg_set(sparx5, id, &sg);
+}
+
+int sparx5_psfp_fm_add(struct sparx5 *sparx5, u32 uidx,
+		       struct sparx5_psfp_fm *fm, u32 *id)
+{
+	struct sparx5_policer *pol = &fm->pol;
+	int ret;
+
+	/* Get flow meter */
+	ret = sparx5_psfp_fm_get(uidx, &fm->pol.idx);
+	if (ret < 0)
+		return ret;
+	/* Was already in use, no need to reconfigure */
+	if (ret > 1)
+		return 0;
+
+	ret = sparx5_sdlb_group_get_by_rate(sparx5, pol->rate, pol->burst);
+	if (ret < 0)
+		return ret;
+
+	fm->pol.group = ret;
+
+	ret = sparx5_sdlb_conf_set(sparx5, fm);
+	if (ret < 0)
+		return ret;
+
+	*id = fm->pol.idx;
+
+	return 0;
+}
+
+int sparx5_psfp_fm_del(struct sparx5 *sparx5, u32 id)
+{
+	struct sparx5_psfp_fm fm = { .pol.idx = id,
+				     .pol.type = SPX5_POL_SERVICE };
+	int ret;
+
+	/* Find the group that this lb belongs to */
+	ret = sparx5_sdlb_group_get_by_index(sparx5, id, &fm.pol.group);
+	if (ret < 0)
+		return ret;
+
+	ret = sparx5_psfp_fm_put(id);
+	if (ret < 0)
+		return ret;
+	/* Do not reset flow-meter if still in use. */
+	if (ret > 0)
+		return 0;
+
+	return sparx5_sdlb_conf_set(sparx5, &fm);
+}
+
+void sparx5_psfp_init(struct sparx5 *sparx5)
+{
+	const struct sparx5_sdlb_group *group;
+	int i;
+
+	for (i = 0; i < SPX5_SDLB_GROUP_CNT; i++) {
+		group = &sdlb_groups[i];
+		sparx5_sdlb_group_init(sparx5, group->max_rate,
+				       group->min_burst, group->frame_size, i);
+	}
+
+	spx5_wr(ANA_AC_SG_CYCLETIME_UPDATE_PERIOD_SG_CT_UPDATE_ENA_SET(1),
+		sparx5, ANA_AC_SG_CYCLETIME_UPDATE_PERIOD);
+
+	spx5_rmw(ANA_L2_FWD_CFG_ISDX_LOOKUP_ENA_SET(1),
+		 ANA_L2_FWD_CFG_ISDX_LOOKUP_ENA, sparx5, ANA_L2_FWD_CFG);
+}