[net-next v1] net: wwan: t7xx: Parameterize data plane RX BAT and FAG count
Jinjian Song
jinjian.song at fibocom.com
Wed May 14 03:47:28 PDT 2025
The DMA buffer for data plane RX is currently fixed, being parameterized
to allow configuration.
Signed-off-by: Jinjian Song <jinjian.song at fibocom.com>
---
drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.c | 12 +++++-------
drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.h | 3 +++
drivers/net/wwan/t7xx/t7xx_pci.c | 10 ++++++++++
3 files changed, 18 insertions(+), 7 deletions(-)
diff --git a/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.c b/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.c
index 6a7a26085fc7..7848e470432c 100644
--- a/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.c
+++ b/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.c
@@ -49,9 +49,7 @@
#include "t7xx_netdev.h"
#include "t7xx_pci.h"
-#define DPMAIF_BAT_COUNT 8192
-#define DPMAIF_FRG_COUNT 4814
-#define DPMAIF_PIT_COUNT (DPMAIF_BAT_COUNT * 2)
+#define DPMAIF_PIT_COUNT (dpmaif_bat_count * 2)
#define DPMAIF_BAT_CNT_THRESHOLD 30
#define DPMAIF_PIT_CNT_THRESHOLD 60
@@ -279,7 +277,7 @@ static int t7xx_frag_bat_cur_bid_check(struct dpmaif_rx_queue *rxq,
struct dpmaif_bat_request *bat_frag = rxq->bat_frag;
struct dpmaif_bat_page *bat_page;
- if (cur_bid >= DPMAIF_FRG_COUNT)
+ if (cur_bid >= dpmaif_frg_count)
return -EINVAL;
bat_page = bat_frag->bat_skb + cur_bid;
@@ -448,7 +446,7 @@ static int t7xx_bat_cur_bid_check(struct dpmaif_rx_queue *rxq, const unsigned in
struct dpmaif_bat_skb *bat_skb = rxq->bat_req->bat_skb;
bat_skb += cur_bid;
- if (cur_bid >= DPMAIF_BAT_COUNT || !bat_skb->skb)
+ if (cur_bid >= dpmaif_bat_count || !bat_skb->skb)
return -EINVAL;
return 0;
@@ -944,11 +942,11 @@ int t7xx_dpmaif_bat_alloc(const struct dpmaif_ctrl *dpmaif_ctrl, struct dpmaif_b
if (buf_type == BAT_TYPE_FRAG) {
sw_buf_size = sizeof(struct dpmaif_bat_page);
- bat_req->bat_size_cnt = DPMAIF_FRG_COUNT;
+ bat_req->bat_size_cnt = dpmaif_frg_count;
bat_req->pkt_buf_sz = DPMAIF_HW_FRG_PKTBUF;
} else {
sw_buf_size = sizeof(struct dpmaif_bat_skb);
- bat_req->bat_size_cnt = DPMAIF_BAT_COUNT;
+ bat_req->bat_size_cnt = dpmaif_bat_count;
bat_req->pkt_buf_sz = DPMAIF_HW_BAT_PKTBUF;
}
diff --git a/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.h b/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.h
index f4e1b69ad426..4709770fc489 100644
--- a/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.h
+++ b/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.h
@@ -22,6 +22,9 @@
#include "t7xx_hif_dpmaif.h"
+extern uint dpmaif_bat_count;
+extern uint dpmaif_frg_count;
+
#define NETIF_MASK GENMASK(4, 0)
#define PKT_TYPE_IP4 0
diff --git a/drivers/net/wwan/t7xx/t7xx_pci.c b/drivers/net/wwan/t7xx/t7xx_pci.c
index 8bf63f2dcbbf..021a05b49225 100644
--- a/drivers/net/wwan/t7xx/t7xx_pci.c
+++ b/drivers/net/wwan/t7xx/t7xx_pci.c
@@ -28,6 +28,7 @@
#include <linux/jiffies.h>
#include <linux/list.h>
#include <linux/module.h>
+#include <linux/moduleparam.h>
#include <linux/mutex.h>
#include <linux/pci.h>
#include <linux/pm.h>
@@ -54,6 +55,15 @@
#define PM_RESOURCE_POLL_TIMEOUT_US 10000
#define PM_RESOURCE_POLL_STEP_US 100
+uint dpmaif_bat_count = 8192;
+uint dpmaif_frg_count = 4814;
+
+module_param(dpmaif_bat_count, uint, 0644);
+MODULE_PARM_DESC(dpmaif_bat_count, "BAT entry count");
+
+module_param(dpmaif_frg_count, uint, 0644);
+MODULE_PARM_DESC(dpmaif_frg_count, "FRG entry count");
+
static const char * const t7xx_mode_names[] = {
[T7XX_UNKNOWN] = "unknown",
[T7XX_READY] = "ready",
--
2.34.1
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