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openwrt/package/kernel/lantiq/vrx518_tc/patches/201-desc-length.patch
Martin Schiller 474bbe23b7 kernel: add Intel/Lantiq VRX518 TC driver 
This driver version is also included in Intel UGW 8.5.2.10.

Signed-off-by: Martin Schiller <ms.3headeddevs@gmail.com>
[updated for kernel 5.10]
Signed-off-by: Jan Hoffmann <jan@3e8.eu>
[update to 1.5.12.4, switch to tag tarball]
Signed-off-by: Andre Heider <a.heider@gmail.com>
[add working software data path]
Signed-off-by: Jan Hoffmann <jan@3e8.eu>
Signed-off-by: Andre Heider <a.heider@gmail.com>
2023-01-16 23:41:41 +00:00

343 lines
9.6 KiB
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Port FEATURE_CONF_DESC_LENGTH from the grx500 variant of the driver.
This also reduces the default length of some descriptors, resulting in
significantly lower latencies when the line is saturated.
--- a/dcdp/inc/tc_common.h
+++ b/dcdp/inc/tc_common.h
@@ -27,7 +27,11 @@
#define UMT_DEF_PERIOD 400 /* microseconds */
#define MAX_MTU (DMA_PACKET_SZ - ETH_HLEN - HD_RSRV_SZ)
+#ifdef FEATURE_CONF_DESC_LENGTH
+#define QOSQ_NUM 8
+#else
#define QOSQ_NUM 2
+#endif
#define FW_STOP_TIMEOUT 20 /* millisecond */
#define QOS_DISPATCH_OWN 0
#define ACA_TXIN_POLL_INTVAL 10 /* millisecond */
--- a/dcdp/inc/tc_main.h
+++ b/dcdp/inc/tc_main.h
@@ -30,6 +30,7 @@
#define TCPRIV_ALIGN 32
#define DMA_PACKET_SZ 2048
+#define FEATURE_CONF_DESC_LENGTH 1
#define FEATURE_POWER_DOWN 1
enum {
@@ -157,6 +158,25 @@ struct tc_param {
unsigned int txout_dnum;
unsigned int rxin_dnum;
unsigned int rxout_dnum;
+
+#ifdef FEATURE_CONF_DESC_LENGTH
+ /* __US_FAST_PATH_DES_LIST_NUM:64
+ * __ACA_TX_IN_PD_LIST_NUM
+ * __ACA_TX_OUT_PD_LIST_NUM
+ * */
+ u32 conf_us_fp_desq_len;
+ /*
+ * Number of queue per QoS queue: QOS_DES_NUM / QOSQ_NUM
+ * */
+ u32 conf_us_qos_queue_len;
+ /* __US_OUTQ0_DES_LIST_NUM: 32
+ * __US_OUTQ1_DES_LIST_NUM: 32
+ * OUTQ_DESC_PER_Q
+ * */
+ u32 conf_us_outq_len;
+ /**/
+ u32 conf_us_local_q0_desq_len;
+#endif
};
struct cdma {
--- a/dcdp/ptm_tc.c
+++ b/dcdp/ptm_tc.c
@@ -75,7 +75,11 @@ static const u32 tx_kvec[] = {
0x30B1B233, 0xB43536B7, 0xB8393ABB, 0x3CBDBE3F,
0xC04142C3, 0x44C5C647, 0x48C9CA4B, 0xCC4D4ECF
};
+#ifndef FEATURE_CONF_DESC_LENGTH
static const u32 def_outq_map[OUTQ_PNUM] = {0x1, 0xFE};
+#else
+static const u32 def_outq_map[OUTQ_PNUM] = {0x0, 0xFF};
+#endif
static const char ptm_drv_name[] = "PTM SL";
static const char ptm_bond_name[][IFNAMSIZ] = {"PTM US BOND", "PTM DS BOND"};
@@ -1005,6 +1009,10 @@ static void us_fp_desq_cfg_ctxt_init(str
int i;
u32 desc_addr;
rx_descriptor_t desc;
+#ifdef FEATURE_CONF_DESC_LENGTH
+ struct tc_priv *tc_priv;
+ tc_priv = priv->tc_priv;
+#endif
memset(&desq_cfg, 0, sizeof(desq_cfg));
/* Initialize US Fast-Path Descriptor Queue Config/Context */
@@ -1012,7 +1020,11 @@ static void us_fp_desq_cfg_ctxt_init(str
desq_cfg.fast_path = 1;
desq_cfg.mbox_int_en = 0;
desq_cfg.des_sync_needed = 0;
+#ifndef FEATURE_CONF_DESC_LENGTH
desq_cfg.des_num = __US_FAST_PATH_DES_LIST_NUM;
+#else
+ desq_cfg.des_num = tc_priv->param.conf_us_fp_desq_len;
+#endif
desq_cfg.des_base_addr = __US_FAST_PATH_DES_LIST_BASE;
tc_mem_write(priv, fpi_addr(__US_FP_INQ_DES_CFG_CTXT),
@@ -1036,12 +1048,20 @@ static void us_qos_desq_cfg_ctxt_init(st
int offset, i;
rx_descriptor_t desc;
u32 phy_addr;
+#ifdef FEATURE_CONF_DESC_LENGTH
+ struct tc_priv *tc_priv;
+ tc_priv = priv->tc_priv;
+#endif
/* Setup QoSQ_CFG_CTXT */
memset(&qosq_cfg_ctxt, 0, sizeof(qosq_cfg_ctxt));
qosq_cfg_ctxt.threshold = 8;
+#ifdef FEATURE_CONF_DESC_LENGTH
+ qosq_cfg_ctxt.des_num = tc_priv->param.conf_us_qos_queue_len;
+#else
qosq_cfg_ctxt.des_num = QOS_DES_NUM / QOSQ_NUM;
+#endif
offset = 0;
for (i = 0; i < QOSQ_NUM; i++) {
@@ -1080,6 +1100,10 @@ static void us_outq_desq_cfg_ctxt_init(s
u32 phy_addr;
int i;
u32 offset;
+#ifdef FEATURE_CONF_DESC_LENGTH
+ struct tc_priv *tc_priv;
+ tc_priv = priv->tc_priv;
+#endif
/* Setup OUTQ_QoS_CFG_CTXT */
/* NOTE: By default, Shaping & WFQ both are DISABLED!! */
@@ -1108,7 +1132,11 @@ static void us_outq_desq_cfg_ctxt_init(s
desq_cfg.des_in_own_val = US_OUTQ_DES_OWN;
desq_cfg.mbox_int_en = 0;
desq_cfg.des_sync_needed = 0;
- desq_cfg.des_num = 32;
+#ifndef FEATURE_CONF_DESC_LENGTH
+ desq_cfg.des_num = OUTQ_DESC_PER_Q;
+#else
+ desq_cfg.des_num = tc_priv->param.conf_us_outq_len;
+#endif
/**
* Only BC0 is used in VRX518
*/
@@ -1174,7 +1202,11 @@ static void us_qos_cfg_init(struct ptm_e
/* Set QoS NO DROP */
sb_w32(1, __QOSQ_NO_DROP);
/* Enable Preemption function/Disable QoS by default */
+#ifdef FEATURE_CONF_DESC_LENGTH
+ sb_w32(0, _CHK_PREEMP_MAP);
+#else
sb_w32(1, _CHK_PREEMP_MAP);
+#endif
/* By default, all qid mappint to non-preemption queue */
sb_w32(0x0, _QID2PREEMP_MAP);
@@ -1376,6 +1408,11 @@ static void ptm_local_desq_cfg_ctxt_init
u32 dcnt, addr, pdbram_base;
unsigned int us_des_alloc[] = {
__US_TC_LOCAL_Q0_DES_LIST_NUM, __US_TC_LOCAL_Q1_DES_LIST_NUM};
+#ifdef FEATURE_CONF_DESC_LENGTH
+ struct tc_priv *tc_priv;
+ tc_priv = priv->tc_priv;
+ us_des_alloc[0] = tc_priv->param.conf_us_local_q0_desq_len;
+#endif
/* Setup the Local DESQ Configuration/Context for UpStream Queues */
memset(&desq_cfg, 0, sizeof(desq_cfg));
@@ -2321,6 +2358,10 @@ static void ptm_aca_init(struct ptm_ep_p
u32 phybase = priv->ep->phy_membase;
u32 start;
u32 type;
+#ifdef FEATURE_CONF_DESC_LENGTH
+ struct tc_priv *tc_priv;
+ tc_priv = priv->tc_priv;
+#endif
priv->tc_priv->tc_ops.soc_cfg_get(&priv->tc_priv->cfg, ptm_id(priv));
memset(&param, 0, sizeof(param));
@@ -2334,7 +2375,11 @@ static void ptm_aca_init(struct ptm_ep_p
#endif
txin->hd_size_in_dw = cfg->txin.soc_desc_dwsz;
txin->pd_desc_base = SB_XBAR_ADDR(__ACA_TX_IN_PD_LIST_BASE);
+#ifndef FEATURE_CONF_DESC_LENGTH
txin->pd_desc_num = __ACA_TX_IN_PD_LIST_NUM;
+#else
+ txin->pd_desc_num = tc_priv->param.conf_us_fp_desq_len;
+#endif
txin->pd_size_in_dw = DESC_DWSZ;
txin->soc_desc_base = cfg->txin.soc_phydbase;
txin->soc_desc_num = cfg->txin.soc_dnum;
--- a/dcdp/tc_main.c
+++ b/dcdp/tc_main.c
@@ -182,6 +182,12 @@ static inline void init_local_param(stru
priv->param.txout_dnum = txout_num;
priv->param.rxin_dnum = rxin_num;
priv->param.rxout_dnum = rxout_num;
+#ifdef FEATURE_CONF_DESC_LENGTH
+ priv->param.conf_us_fp_desq_len = 32;
+ priv->param.conf_us_qos_queue_len = 32;
+ priv->param.conf_us_outq_len = 32;
+ priv->param.conf_us_local_q0_desq_len = 16;
+#endif
priv->tc_mode = TC_NONE_MODE;
priv->tc_stat = NO_TC;
--- a/dcdp/tc_proc.c
+++ b/dcdp/tc_proc.c
@@ -1114,6 +1114,9 @@ static int proc_read_ver(struct seq_file
(date >> 16) & 0xff,
(date & 0xffff));
+#ifdef FEATURE_CONF_DESC_LENGTH
+ seq_puts(seq, " + Support QoS and Configurable descriptor length\n");
+#endif
#ifdef FEATURE_POWER_DOWN
seq_puts(seq, " + Support Power Down enhancement feature\n");
#endif
@@ -1166,6 +1169,113 @@ static const struct proc_ops tc_soc_proc
.proc_release = single_release,
};
+#ifdef FEATURE_CONF_DESC_LENGTH
+static ssize_t proc_write_desc_conf(struct file *file, const char __user *buf,
+ size_t count, loff_t *data)
+{
+ struct tc_priv *priv;
+ char str[32];
+ int len, rlen, temp;
+ int num, temp_num;
+ char *param_list[20];
+ len = count < sizeof(str) ? count : sizeof(str) - 1;
+ rlen = len - copy_from_user(str, buf, len);
+ str[rlen] = 0;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ priv = (struct tc_priv *)PDE_DATA(file_inode(file));
+ if (priv == NULL)
+ return count;
+
+ num = vrx_split_buffer(str, param_list, ARRAY_SIZE(param_list));
+ if (num < 1 || num > 4)
+ goto proc_dbg_desc_conf;
+
+ temp_num = num;
+ if (num-- != 0) {
+ temp = vrx_atoi(param_list[0]);
+ if (temp < 1 || temp > 128) {
+ pr_info("Fastpath valid range: 1 -> 128\n");
+ goto proc_dbg_desc_conf;
+ }
+ }
+ if (num-- != 0) {
+ temp = vrx_atoi(param_list[1]);
+ if (temp < 1 || temp > 63) {
+ pr_info("QoS valid range: 1 -> 63\n");
+ goto proc_dbg_desc_conf;
+ }
+ }
+ if (num-- != 0) {
+ temp = vrx_atoi(param_list[2]);
+ if (temp < 1 || temp > 128) {
+ pr_info("OutQ valid range: 1 -> 128\n");
+ goto proc_dbg_desc_conf;
+ }
+ }
+ if (num-- != 0) {
+ temp = vrx_atoi(param_list[3]);
+ if (temp < 4 || temp > 16) {
+ pr_info("Local Q0 valid range: 4 -> 16\n");
+ goto proc_dbg_desc_conf;
+ }
+ }
+ num = temp_num;
+ if (num-- != 0) {
+ priv->param.conf_us_fp_desq_len = vrx_atoi(param_list[0]);
+ }
+ if (num-- != 0) {
+ priv->param.conf_us_qos_queue_len = vrx_atoi(param_list[1]);
+ }
+ if (num-- != 0) {
+ priv->param.conf_us_outq_len = vrx_atoi(param_list[2]);
+ }
+ if (num-- != 0) {
+ priv->param.conf_us_local_q0_desq_len = vrx_atoi(param_list[3]);
+ }
+
+ return count;
+
+proc_dbg_desc_conf:
+ pr_info("echo [FP] [QoS] [OutQ] [LocalQ0]> desc_conf\n");
+ return count;
+}
+
+static int proc_read_desc_conf(struct seq_file *seq, void *v)
+{
+ struct tc_priv *priv;
+ priv = (struct tc_priv *)seq->private;
+ if (priv == NULL)
+ return -1;
+ seq_puts(seq, "Upstream descriptor length information:\n");
+ seq_printf(seq, " - Fastpath: %d\n",
+ priv->param.conf_us_fp_desq_len);
+ seq_printf(seq, " - QoS: %d\n",
+ priv->param.conf_us_qos_queue_len);
+ seq_printf(seq, " - OutQ: %d\n",
+ priv->param.conf_us_outq_len);
+ seq_printf(seq, " - Local Q0: %d\n",
+ priv->param.conf_us_local_q0_desq_len);
+ seq_puts(seq, "\n");
+ return 0;
+}
+
+static int proc_read_desc_conf_seq_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, proc_read_desc_conf, PDE_DATA(inode));
+}
+#endif
+
+static const struct proc_ops tc_desc_conf_proc_fops = {
+ .proc_open = proc_read_desc_conf_seq_open,
+ .proc_read = seq_read,
+ .proc_write = proc_write_desc_conf,
+ .proc_lseek = seq_lseek,
+ .proc_release = single_release,
+};
+
static struct tc_proc_list tc_procs[] = {
{TC_PROC_DIR, 0, NULL, 1},
{"cfg", 0644, &tc_cfg_proc_fops, 0},
@@ -1174,6 +1284,9 @@ static struct tc_proc_list tc_procs[] =
{"showtime", 0200, &tc_show_time_proc_fops, 0},
{"ver", 0644, &tc_ver_proc_fops, 0},
{"soc", 0644, &tc_soc_proc_fops, 0},
+#ifdef FEATURE_CONF_DESC_LENGTH
+ {"desc_conf", 0644, &tc_desc_conf_proc_fops, 0},
+#endif
};
int tc_proc_init(struct tc_priv *priv)
@@ -1333,7 +1446,6 @@ proc_ptm_cfg_help:
return count;
}
-
static const struct proc_ops ptm_cfg_proc_fops = {
.proc_open = proc_read_cfg_seq_open,
.proc_read = seq_read,
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