wlan-ap-Telecominfraproject/feeds/ipq95xx/mac80211/patches/qca/653-003-Add-provision-to-configure-rx-hashmap.patch

From e8cb7ae8970b9b2726cff3734def7db66f13e898 Mon Sep 17 00:00:00 2001
From: Balamurugan Selvarajan <quic_bselvara@quicinc.com>
Date: Mon, 1 Aug 2022 14:43:55 +0530
Subject: [PATCH] ath12k: Add provision to configure rx hashmap

Currently the hashmap is set to default during REO
setup and all REO rings are equally distributed across
32 hash values.

Add provision to configure the hashmap so that destination
rings can be controlled.

echo 0x32321321 > /sys/kernel/debug/ath12k/qcn92xx hw1.0_0002:01:00.0/rx_hash

Signed-off-by: Balamurugan Selvarajan <quic_bselvara@quicinc.com>
---
 drivers/net/wireless/ath/ath12k/core.h    |  1 +
 drivers/net/wireless/ath/ath12k/debugfs.c | 53 +++++++++++++++++++++++
 drivers/net/wireless/ath/ath12k/hal.h     |  1 +
 drivers/net/wireless/ath/ath12k/hal_rx.c  | 10 +++++
 4 files changed, 65 insertions(+)

Index: backports-20220404-5.4.164-f40abb4788/drivers/net/wireless/ath/ath12k/core.h
===================================================================
--- backports-20220404-5.4.164-f40abb4788.orig/drivers/net/wireless/ath/ath12k/core.h
+++ backports-20220404-5.4.164-f40abb4788/drivers/net/wireless/ath/ath12k/core.h
@@ -1014,6 +1014,8 @@ struct ath12k_base {
 	struct device_node *hremote_node;
 	u32 host_ddr_fixed_mem_off;
 	bool stats_disable;
+	u32 rx_hash_ix2;
+	u32 rx_hash_ix3;
 
 	/* must be last */
 	u8 drv_priv[0] __aligned(sizeof(void *));
Index: backports-20220404-5.4.164-f40abb4788/drivers/net/wireless/ath/ath12k/debugfs.c
===================================================================
--- backports-20220404-5.4.164-f40abb4788.orig/drivers/net/wireless/ath/ath12k/debugfs.c
+++ backports-20220404-5.4.164-f40abb4788/drivers/net/wireless/ath/ath12k/debugfs.c
@@ -1133,6 +1133,106 @@ static const struct file_operations fops
 	.write = ath12k_write_stats_disable,
 };
 
+static ssize_t ath12k_write_rx_hash_ix3(struct file *file,
+				        const char __user *ubuf,
+				        size_t count, loff_t *ppos)
+{
+	struct ath12k_base *ab = file->private_data;
+	struct ath12k_pdev *pdev;
+	u32 rx_hash;
+	u8 buf[128] = {0};
+	int ret, i, radioup = 0;
+
+	for (i = 0; i < ab->num_radios; i++) {
+		pdev = &ab->pdevs[i];
+	        if (pdev && pdev->ar) {
+			radioup = 1;
+			break;
+	        }
+	}
+
+	if (radioup == 0) {
+		ath12k_err(ab, "radio is not up\n");
+		ret = -ENETDOWN;
+		goto exit;
+	}
+
+	ret = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, ubuf, count);
+	if (ret < 0)
+		goto exit;
+
+	buf[ret] = '\0';
+	ret = sscanf(buf, "%x", &rx_hash);
+	if (!ret) {
+		ret = -EINVAL;
+		goto exit;
+	}
+
+	if (rx_hash != ab->rx_hash_ix3) {
+		ab->rx_hash_ix3 = rx_hash;
+	        if (rx_hash)
+			ath12k_hal_reo_ring_ctrl_hash_ix3_setup(ab, rx_hash);
+	}
+	ret = count;
+exit:
+	return ret;
+}
+
+static ssize_t ath12k_write_rx_hash_ix2(struct file *file,
+				        const char __user *ubuf,
+				        size_t count, loff_t *ppos)
+{
+	struct ath12k_base *ab = file->private_data;
+	struct ath12k_pdev *pdev;
+	u32 rx_hash;
+	u8 buf[128] = {0};
+	int ret, i, radioup = 0;
+
+	for (i = 0; i < ab->num_radios; i++) {
+		pdev = &ab->pdevs[i];
+	        if (pdev && pdev->ar) {
+			radioup = 1;
+			break;
+	        }
+	}
+
+	if (radioup == 0) {
+		ath12k_err(ab, "radio is not up\n");
+		ret = -ENETDOWN;
+		goto exit;
+	}
+
+	ret = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, ubuf, count);
+	if (ret < 0)
+		goto exit;
+
+	buf[ret] = '\0';
+	ret = sscanf(buf, "%x", &rx_hash);
+	if (!ret) {
+		ret = -EINVAL;
+		goto exit;
+	}
+
+	if (rx_hash != ab->rx_hash_ix2) {
+		ab->rx_hash_ix2 = rx_hash;
+	        if (rx_hash)
+			ath12k_hal_reo_ring_ctrl_hash_ix2_setup(ab, rx_hash);
+	}
+	ret = count;
+exit:
+	return ret;
+}
+
+static const struct file_operations fops_soc_rx_hash_ix2 = {
+	.open = simple_open,
+	.write = ath12k_write_rx_hash_ix2,
+};
+
+static const struct file_operations fops_soc_rx_hash_ix3 = {
+	.open = simple_open,
+	.write = ath12k_write_rx_hash_ix3,
+};
+
 int ath12k_debugfs_pdev_create(struct ath12k_base *ab)
 {
 	if (test_bit(ATH12K_FLAG_REGISTERED, &ab->dev_flags))
@@ -1156,6 +1256,12 @@ int ath12k_debugfs_pdev_create(struct at
 	debugfs_create_file("stats_disable", 0600, ab->debugfs_soc, ab,
 			    &fops_soc_stats_disable);
 
+	debugfs_create_file("rx_hash_ix2", 0600, ab->debugfs_soc, ab,
+			    &fops_soc_rx_hash_ix2);
+
+	debugfs_create_file("rx_hash_ix3", 0600, ab->debugfs_soc, ab,
+			    &fops_soc_rx_hash_ix3);
+
 	return 0;
 }
 
Index: backports-20220404-5.4.164-f40abb4788/drivers/net/wireless/ath/ath12k/hal.h
===================================================================
--- backports-20220404-5.4.164-f40abb4788.orig/drivers/net/wireless/ath/ath12k/hal.h
+++ backports-20220404-5.4.164-f40abb4788/drivers/net/wireless/ath/ath12k/hal.h
@@ -1133,4 +1133,8 @@ u32 *ath12k_hal_srng_dst_get_next_cache_
 					      struct hal_srng *srng);
 void ath12k_hal_srng_dst_invalidate_entry(struct ath12k_base *ab,
 					  struct hal_srng *srng, int entries);
+void ath12k_hal_reo_ring_ctrl_hash_ix3_setup(struct ath12k_base *ab,
+					     u32 ring_hash_map);
+void ath12k_hal_reo_ring_ctrl_hash_ix2_setup(struct ath12k_base *ab,
+					     u32 ring_hash_map);
 #endif
Index: backports-20220404-5.4.164-f40abb4788/drivers/net/wireless/ath/ath12k/hal_rx.c
===================================================================
--- backports-20220404-5.4.164-f40abb4788.orig/drivers/net/wireless/ath/ath12k/hal_rx.c
+++ backports-20220404-5.4.164-f40abb4788/drivers/net/wireless/ath/ath12k/hal_rx.c
@@ -827,6 +827,24 @@ void ath12k_hal_reo_init_cmd_ring(struct
 	}
 }
 
+void ath12k_hal_reo_ring_ctrl_hash_ix2_setup(struct ath12k_base *ab,
+					     u32 ring_hash_map)
+{
+	u32 reo_base = HAL_SEQ_WCSS_UMAC_REO_REG;
+
+	ath12k_hif_write32(ab, reo_base + HAL_REO1_DEST_RING_CTRL_IX_2,
+			   ring_hash_map);
+}
+
+void ath12k_hal_reo_ring_ctrl_hash_ix3_setup(struct ath12k_base *ab,
+					     u32 ring_hash_map)
+{
+	u32 reo_base = HAL_SEQ_WCSS_UMAC_REO_REG;
+
+	ath12k_hif_write32(ab, reo_base + HAL_REO1_DEST_RING_CTRL_IX_3,
+			   ring_hash_map);
+}
+
 void ath12k_hal_reo_hw_setup(struct ath12k_base *ab, u32 ring_hash_map)
 {
 	u32 reo_base = HAL_SEQ_WCSS_UMAC_REO_REG;
@@ -857,10 +875,9 @@ void ath12k_hal_reo_hw_setup(struct ath1
 	ath12k_hif_write32(ab, reo_base + HAL_REO1_AGING_THRESH_IX_3,
 			   HAL_DEFAULT_VO_REO_TIMEOUT_USEC);
 
-	ath12k_hif_write32(ab, reo_base + HAL_REO1_DEST_RING_CTRL_IX_2,
-			   ring_hash_map);
-	ath12k_hif_write32(ab, reo_base + HAL_REO1_DEST_RING_CTRL_IX_3,
-			   ring_hash_map);
+	ath12k_hal_reo_ring_ctrl_hash_ix2_setup(ab, ring_hash_map);
+	ath12k_hal_reo_ring_ctrl_hash_ix3_setup(ab, ring_hash_map);
+
 }
 
 void ath12k_hal_rx_reo_ent_buf_paddr_get(void *rx_desc, dma_addr_t *paddr,