This is primarily for testing and can be used in combination with monitor
mode to make the card respond to packets sent to a specific MAC address.
For now this is only exposed as a debug/testing feature, later on the
approach might be used to support more concurrent station interfaces
Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
---
.../wireless/mediatek/mt76/mt7615/debugfs.c | 87 +++++++++++++++++++
.../wireless/mediatek/mt76/mt7615/mt7615.h | 2 +
.../net/wireless/mediatek/mt76/mt7615/regs.h | 11 +++
3 files changed, 100 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7615/debugfs.c
index 00ba550fc48f..efdc61c812ca 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/debugfs.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/debugfs.c
@@ -365,6 +365,92 @@ mt7615_rf_reg_get(void *data, u64 *val)
DEFINE_DEBUGFS_ATTRIBUTE(fops_rf_reg, mt7615_rf_reg_get, mt7615_rf_reg_set,
"0x%08llx\n");
+static ssize_t
+mt7615_ext_mac_addr_read(struct file *file, char __user *userbuf,
+ size_t count, loff_t *ppos)
+{
+ struct mt7615_dev *dev = file->private_data;
+ char buf[32 * ((ETH_ALEN * 3) + 4) + 1];
+ u8 addr[ETH_ALEN];
+ int ofs = 0;
+ int i;
+
+ for (i = 0; i < 32; i++) {
+ if (!(dev->muar_mask & BIT(i)))
+ continue;
+
+ mt76_wr(dev, MT_WF_RMAC_MAR1,
+ FIELD_PREP(MT_WF_RMAC_MAR1_IDX, i * 2) |
+ MT_WF_RMAC_MAR1_START);
+ put_unaligned_le32(mt76_rr(dev, MT_WF_RMAC_MAR0), addr);
+ put_unaligned_le16((mt76_rr(dev, MT_WF_RMAC_MAR1) &
+ MT_WF_RMAC_MAR1_ADDR), addr + 4);
+ ofs += snprintf(buf + ofs, sizeof(buf) - ofs, "%d=%pM\n", i, addr);
+ }
+
+ return simple_read_from_buffer(userbuf, count, ppos, buf, ofs);
+}
+
+static ssize_t
+mt7615_ext_mac_addr_write(struct file *file, const char __user *userbuf,
+ size_t count, loff_t *ppos)
+{
+ struct mt7615_dev *dev = file->private_data;
+ unsigned long idx = 0;
+ u8 addr[ETH_ALEN];
+ char buf[32];
+ char *p;
+
+ if (count > sizeof(buf))
+ return -EINVAL;
+
+ if (copy_from_user(buf, userbuf, count))
+ return -EFAULT;
+
+ buf[sizeof(buf) - 1] = '\0';
+
+ p = strchr(buf, '=');
+ if (p) {
+ *p = 0;
+ p++;
+
+ if (kstrtoul(buf, 0, &idx) || idx > 31)
+ return -EINVAL;
+ } else {
+ idx = 0;
+ p = buf;
+ }
+
+ if (!mac_pton(p, addr))
+ return -EINVAL;
+
+ if (is_valid_ether_addr(addr)) {
+ dev->muar_mask |= BIT(idx);
+ } else {
+ memset(addr, 0, sizeof(addr));
+ dev->muar_mask &= ~BIT(idx);
+ }
+
+ mt76_rmw_field(dev, MT_WF_RMAC_MORE(0), MT_WF_RMAC_MORE_MUAR_MODE, 1);
+ mt76_wr(dev, MT_WF_RMAC_MAR0, get_unaligned_le32(addr));
+ mt76_wr(dev, MT_WF_RMAC_MAR1,
+ get_unaligned_le16(addr + 4) |
+ FIELD_PREP(MT_WF_RMAC_MAR1_IDX, idx * 2) |
+ MT_WF_RMAC_MAR1_START |
+ MT_WF_RMAC_MAR1_WRITE);
+
+ mt76_rmw_field(dev, MT_WF_RMAC_MORE(0), MT_WF_RMAC_MORE_MUAR_MODE, !!dev->muar_mask);
+
+ return count;
+}
+
+static const struct file_operations fops_ext_mac_addr = {
+ .open = simple_open,
+ .llseek = generic_file_llseek,
+ .read = mt7615_ext_mac_addr_read,
+ .write = mt7615_ext_mac_addr_write,
+};
+
int mt7615_init_debugfs(struct mt7615_dev *dev)
{
struct dentry *dir;
@@ -406,6 +492,7 @@ int mt7615_init_debugfs(struct mt7615_dev *dev)
&fops_reset_test);
debugfs_create_devm_seqfile(dev->mt76.dev, "temperature", dir,
mt7615_read_temperature);
+ debugfs_create_file("ext_mac_addr", 0600, dir, dev, &fops_ext_mac_addr);
debugfs_create_u32("rf_wfidx", 0600, dir, &dev->debugfs_rf_wf);
debugfs_create_u32("rf_regidx", 0600, dir, &dev->debugfs_rf_reg);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h b/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
index 716956b58c13..43d8256af66a 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
@@ -295,6 +295,8 @@ struct mt7615_dev {
u32 debugfs_rf_wf;
u32 debugfs_rf_reg;
+ u32 muar_mask;
+
#ifdef CONFIG_NL80211_TESTMODE
struct {
u32 *reg_backup;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/regs.h b/drivers/net/wireless/mediatek/mt76/mt7615/regs.h
index 61623f480806..6e5db015b32c 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/regs.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/regs.h
@@ -333,6 +333,9 @@ enum mt7615_reg_base {
#define MT_WF_RFCR_DROP_NDPA BIT(20)
#define MT_WF_RFCR_DROP_UNWANTED_CTL BIT(21)
+#define MT_WF_RMAC_MORE(_band) MT_WF_RMAC((_band) ? 0x124 : 0x024)
+#define MT_WF_RMAC_MORE_MUAR_MODE GENMASK(31, 30)
+
#define MT_WF_RFCR1(_band) MT_WF_RMAC((_band) ? 0x104 : 0x004)
#define MT_WF_RFCR1_DROP_ACK BIT(4)
#define MT_WF_RFCR1_DROP_BF_POLL BIT(5)
@@ -342,6 +345,14 @@ enum mt7615_reg_base {
#define MT_CHFREQ(_band) MT_WF_RMAC((_band) ? 0x130 : 0x030)
+#define MT_WF_RMAC_MAR0 MT_WF_RMAC(0x025c)
+#define MT_WF_RMAC_MAR1 MT_WF_RMAC(0x0260)
+#define MT_WF_RMAC_MAR1_ADDR GENMASK(15, 0)
+#define MT_WF_RMAC_MAR1_START BIT(16)
+#define MT_WF_RMAC_MAR1_WRITE BIT(17)
+#define MT_WF_RMAC_MAR1_IDX GENMASK(29, 24)
+#define MT_WF_RMAC_MAR1_GROUP GENMASK(31, 30)
+
#define MT_WF_RMAC_MIB_TIME0 MT_WF_RMAC(0x03c4)
#define MT_WF_RMAC_MIB_RXTIME_CLR BIT(31)
#define MT_WF_RMAC_MIB_RXTIME_EN BIT(30)
--
2.28.0
