[PATCH] ath11k: Add provision to configure rx hashmap
P Praneesh
quic_ppranees at quicinc.com
Mon Oct 25 05:18:36 PDT 2021
Currently the hashmap is set to default during REO setup and all REO
rings are equally distributed across 32 hash values.
In multiple radio cases, 40MHz+80MHz+160MHz, distributing received
packets across all the CPU will cause CPU overhead. In this case,
during runtime we can span 40MHz and 80MHz among 2 cores and remaining
2 cores are equally distributed for 160MHz by using register mapping.
Add provision to configure the hashmap during runtime through debugfs
for improving flexibility to control the destination HW rx queues/rings,
so that affinity could be used to assign those interrupts to specific
rings. Setting 0 will disable hash based steering.
echo "hashmap" > /sys/kernel/debug/ath11k/ipq8074\ hw2.0/rx_hash
Developers who are aware of hardware register mapping can leverage
this rx_hash debugfs.
Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.4.0.1.r2-00012-QCAHKSWPL_SILICONZ-1
Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-01695-QCAHKSWPL_SILICONZ-1
Co-developed-by: Sriram R <quic_srirrama at quicinc.com>
Signed-off-by: Sriram R <quic_srirrama at quicinc.com>
Signed-off-by: P Praneesh <quic_ppranees at quicinc.com>
---
drivers/net/wireless/ath/ath11k/core.h | 4 ++
drivers/net/wireless/ath/ath11k/debugfs.c | 64 +++++++++++++++++++++++++++++++
drivers/net/wireless/ath/ath11k/hal.h | 1 +
drivers/net/wireless/ath/ath11k/hal_rx.c | 10 +++++
drivers/net/wireless/ath/ath11k/hw.c | 18 +--------
5 files changed, 81 insertions(+), 16 deletions(-)
diff --git a/drivers/net/wireless/ath/ath11k/core.h b/drivers/net/wireless/ath/ath11k/core.h
index 31d234a..81867ac 100644
--- a/drivers/net/wireless/ath/ath11k/core.h
+++ b/drivers/net/wireless/ath/ath11k/core.h
@@ -36,6 +36,9 @@
#define ATH11K_INVALID_HW_MAC_ID 0xFF
#define ATH11K_CONNECTION_LOSS_HZ (3 * HZ)
+/* Shift value to set the dest rings hash map to the dest control register */
+#define HAL_REO_DEST_RING_CTRL_HASH_RING_SHIFT 8
+
extern unsigned int ath11k_frame_mode;
#define ATH11K_MON_TIMER_INTERVAL 10
@@ -759,6 +762,7 @@ struct ath11k_base {
struct completion htc_suspend;
+ u32 rx_hash;
/* must be last */
u8 drv_priv[0] __aligned(sizeof(void *));
};
diff --git a/drivers/net/wireless/ath/ath11k/debugfs.c b/drivers/net/wireless/ath/ath11k/debugfs.c
index 80afd35..7c2d49c 100644
--- a/drivers/net/wireless/ath/ath11k/debugfs.c
+++ b/drivers/net/wireless/ath/ath11k/debugfs.c
@@ -831,6 +831,67 @@ static const struct file_operations fops_soc_dp_stats = {
.llseek = default_llseek,
};
+static ssize_t ath11k_write_rx_hash(struct file *file,
+ const char __user *ubuf,
+ size_t count, loff_t *ppos)
+{
+ struct ath11k_base *ab = file->private_data;
+ struct ath11k_pdev *pdev;
+ u32 rx_hash;
+ u8 buf[128] = {0};
+ int ret, i;
+
+ for (i = 0; i < ab->num_radios; i++) {
+ pdev = &ab->pdevs[i];
+ if (pdev && pdev->ar)
+ break;
+ }
+
+ if (i == ab->num_radios) {
+ ath11k_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 = kstrtou32(buf, 0, &rx_hash);
+ if (ret) {
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ if (rx_hash != ab->rx_hash) {
+ ab->rx_hash = rx_hash;
+ if (rx_hash)
+ ath11k_hal_reo_hash_setup(ab, rx_hash);
+ }
+ ret = count;
+exit:
+ return ret;
+}
+
+static ssize_t ath11k_read_rx_hash(struct file *file,
+ char __user *ubuf,
+ size_t count, loff_t *ppos)
+{
+ struct ath11k_base *ab = file->private_data;
+ int len = 0;
+ char buf[32];
+
+ len = scnprintf(buf, sizeof(buf) - len, "0x%x\n", ab->rx_hash);
+ return simple_read_from_buffer(ubuf, count, ppos, buf, len);
+}
+
+static const struct file_operations fops_soc_rx_hash = {
+ .read = ath11k_read_rx_hash,
+ .write = ath11k_write_rx_hash,
+ .open = simple_open,
+};
+
int ath11k_debugfs_pdev_create(struct ath11k_base *ab)
{
if (test_bit(ATH11K_FLAG_REGISTERED, &ab->dev_flags))
@@ -846,6 +907,9 @@ int ath11k_debugfs_pdev_create(struct ath11k_base *ab)
debugfs_create_file("soc_dp_stats", 0600, ab->debugfs_soc, ab,
&fops_soc_dp_stats);
+ debugfs_create_file("rx_hash", 0600, ab->debugfs_soc, ab,
+ &fops_soc_rx_hash);
+
return 0;
}
diff --git a/drivers/net/wireless/ath/ath11k/hal.h b/drivers/net/wireless/ath/ath11k/hal.h
index 35ed3a1..bc9b321 100644
--- a/drivers/net/wireless/ath/ath11k/hal.h
+++ b/drivers/net/wireless/ath/ath11k/hal.h
@@ -908,6 +908,7 @@ void ath11k_hal_reo_qdesc_setup(void *vaddr, int tid, u32 ba_window_size,
u32 start_seq, enum hal_pn_type type);
void ath11k_hal_reo_init_cmd_ring(struct ath11k_base *ab,
struct hal_srng *srng);
+void ath11k_hal_reo_hash_setup(struct ath11k_base *ab, u32 ring_hash_map);
void ath11k_hal_setup_link_idle_list(struct ath11k_base *ab,
struct hal_wbm_idle_scatter_list *sbuf,
u32 nsbufs, u32 tot_link_desc,
diff --git a/drivers/net/wireless/ath/ath11k/hal_rx.c b/drivers/net/wireless/ath/ath11k/hal_rx.c
index 325055c..25d0981 100644
--- a/drivers/net/wireless/ath/ath11k/hal_rx.c
+++ b/drivers/net/wireless/ath/ath11k/hal_rx.c
@@ -801,6 +801,16 @@ void ath11k_hal_reo_init_cmd_ring(struct ath11k_base *ab,
}
}
+void ath11k_hal_reo_hash_setup(struct ath11k_base *ab, u32 ring_hash_map)
+{
+ u32 reo_base = HAL_SEQ_WCSS_UMAC_REO_REG;
+
+ ath11k_hif_write32(ab, reo_base + HAL_REO1_DEST_RING_CTRL_IX_2,
+ ring_hash_map << HAL_REO_DEST_RING_CTRL_HASH_RING_SHIFT);
+ ath11k_hif_write32(ab, reo_base + HAL_REO1_DEST_RING_CTRL_IX_3,
+ ring_hash_map << HAL_REO_DEST_RING_CTRL_HASH_RING_SHIFT);
+}
+
static enum hal_rx_mon_status
ath11k_hal_rx_parse_mon_status_tlv(struct ath11k_base *ab,
struct hal_rx_mon_ppdu_info *ppdu_info,
diff --git a/drivers/net/wireless/ath/ath11k/hw.c b/drivers/net/wireless/ath/ath11k/hw.c
index 7a343db..61562e8 100644
--- a/drivers/net/wireless/ath/ath11k/hw.c
+++ b/drivers/net/wireless/ath/ath11k/hw.c
@@ -132,18 +132,7 @@ static void ath11k_hw_ipq8074_reo_setup(struct ath11k_base *ab)
ath11k_hif_write32(ab, reo_base + HAL_REO1_AGING_THRESH_IX_3(ab),
HAL_DEFAULT_REO_TIMEOUT_USEC);
- ath11k_hif_write32(ab, reo_base + HAL_REO1_DEST_RING_CTRL_IX_0,
- FIELD_PREP(HAL_REO_DEST_RING_CTRL_HASH_RING_MAP,
- ring_hash_map));
- ath11k_hif_write32(ab, reo_base + HAL_REO1_DEST_RING_CTRL_IX_1,
- FIELD_PREP(HAL_REO_DEST_RING_CTRL_HASH_RING_MAP,
- ring_hash_map));
- ath11k_hif_write32(ab, reo_base + HAL_REO1_DEST_RING_CTRL_IX_2,
- FIELD_PREP(HAL_REO_DEST_RING_CTRL_HASH_RING_MAP,
- ring_hash_map));
- ath11k_hif_write32(ab, reo_base + HAL_REO1_DEST_RING_CTRL_IX_3,
- FIELD_PREP(HAL_REO_DEST_RING_CTRL_HASH_RING_MAP,
- ring_hash_map));
+ ath11k_hal_reo_hash_setup(ab, ring_hash_map);
}
static void ath11k_init_wmi_config_ipq8074(struct ath11k_base *ab,
@@ -771,10 +760,7 @@ static void ath11k_hw_wcn6855_reo_setup(struct ath11k_base *ab)
ath11k_hif_write32(ab, reo_base + HAL_REO1_AGING_THRESH_IX_3(ab),
HAL_DEFAULT_REO_TIMEOUT_USEC);
- ath11k_hif_write32(ab, reo_base + HAL_REO1_DEST_RING_CTRL_IX_2,
- ring_hash_map);
- ath11k_hif_write32(ab, reo_base + HAL_REO1_DEST_RING_CTRL_IX_3,
- ring_hash_map);
+ ath11k_hal_reo_hash_setup(ab, ring_hash_map);
}
static u16 ath11k_hw_ipq8074_mpdu_info_get_peerid(u8 *tlv_data)
--
2.7.4
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