The register-based H2C/C2H are used to exchange information between driver
and firmware, but only apply to narrow area because its data size is
smaller than regular packet-based H2C/C2H.
This kind of H2C/C2H must be paired. To identify if any H2C/C2H is missing,
update counters to help diagnose this kind of problems.
Signed-off-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
---
v2: driver maintains counters to avoid using rtw89_write8_mask_add(), so
we don't need to add it.
---
drivers/net/wireless/realtek/rtw89/core.h | 4 ++++
drivers/net/wireless/realtek/rtw89/fw.c | 11 +++++++++++
drivers/net/wireless/realtek/rtw89/mac.c | 2 ++
drivers/net/wireless/realtek/rtw89/reg.h | 5 +++++
drivers/net/wireless/realtek/rtw89/rtw8852a.c | 2 ++
drivers/net/wireless/realtek/rtw89/rtw8852b.c | 2 ++
drivers/net/wireless/realtek/rtw89/rtw8852c.c | 2 ++
7 files changed, 28 insertions(+)
diff --git a/drivers/net/wireless/realtek/rtw89/core.h b/drivers/net/wireless/realtek/rtw89/core.h
index e447bfec508b8..01e9444e221c3 100644
--- a/drivers/net/wireless/realtek/rtw89/core.h
+++ b/drivers/net/wireless/realtek/rtw89/core.h
@@ -3116,8 +3116,10 @@ struct rtw89_chip_info {
u32 txwd_body_size;
u32 h2c_ctrl_reg;
const u32 *h2c_regs;
+ struct rtw89_reg_def h2c_counter_reg;
u32 c2h_ctrl_reg;
const u32 *c2h_regs;
+ struct rtw89_reg_def c2h_counter_reg;
const struct rtw89_page_regs *page_regs;
bool cfo_src_fd;
const struct rtw89_reg_def *dcfo_comp;
@@ -3244,6 +3246,8 @@ struct rtw89_fw_info {
struct completion completion;
u8 h2c_seq;
u8 rec_seq;
+ u8 h2c_counter;
+ u8 c2h_counter;
struct rtw89_fw_suit normal;
struct rtw89_fw_suit wowlan;
bool fw_log_enable;
diff --git a/drivers/net/wireless/realtek/rtw89/fw.c b/drivers/net/wireless/realtek/rtw89/fw.c
index 713aefd0cf8dd..5fa6863d36b30 100644
--- a/drivers/net/wireless/realtek/rtw89/fw.c
+++ b/drivers/net/wireless/realtek/rtw89/fw.c
@@ -615,6 +615,8 @@ int rtw89_fw_download(struct rtw89_dev *rtwdev, enum rtw89_fw_type type)
fw_info->h2c_seq = 0;
fw_info->rec_seq = 0;
+ fw_info->h2c_counter = 0;
+ fw_info->c2h_counter = 0;
rtwdev->mac.rpwm_seq_num = RPWM_SEQ_NUM_MAX;
rtwdev->mac.cpwm_seq_num = CPWM_SEQ_NUM_MAX;
@@ -2724,6 +2726,7 @@ static int rtw89_fw_write_h2c_reg(struct rtw89_dev *rtwdev,
struct rtw89_mac_h2c_info *info)
{
const struct rtw89_chip_info *chip = rtwdev->chip;
+ struct rtw89_fw_info *fw_info = &rtwdev->fw;
const u32 *h2c_reg = chip->h2c_regs;
u8 i, val, len;
int ret;
@@ -2743,6 +2746,9 @@ static int rtw89_fw_write_h2c_reg(struct rtw89_dev *rtwdev,
for (i = 0; i < RTW89_H2CREG_MAX; i++)
rtw89_write32(rtwdev, h2c_reg[i], info->h2creg[i]);
+ fw_info->h2c_counter++;
+ rtw89_write8_mask(rtwdev, chip->h2c_counter_reg.addr,
+ chip->h2c_counter_reg.mask, fw_info->h2c_counter);
rtw89_write8(rtwdev, chip->h2c_ctrl_reg, B_AX_H2CREG_TRIGGER);
return 0;
@@ -2752,6 +2758,7 @@ static int rtw89_fw_read_c2h_reg(struct rtw89_dev *rtwdev,
struct rtw89_mac_c2h_info *info)
{
const struct rtw89_chip_info *chip = rtwdev->chip;
+ struct rtw89_fw_info *fw_info = &rtwdev->fw;
const u32 *c2h_reg = chip->c2h_regs;
u32 ret;
u8 i, val;
@@ -2775,6 +2782,10 @@ static int rtw89_fw_read_c2h_reg(struct rtw89_dev *rtwdev,
info->content_len = (RTW89_GET_C2H_HDR_LEN(*info->c2hreg) << 2) -
RTW89_C2HREG_HDR_LEN;
+ fw_info->c2h_counter++;
+ rtw89_write8_mask(rtwdev, chip->c2h_counter_reg.addr,
+ chip->c2h_counter_reg.mask, fw_info->c2h_counter);
+
return 0;
}
diff --git a/drivers/net/wireless/realtek/rtw89/mac.c b/drivers/net/wireless/realtek/rtw89/mac.c
index 7866fe925d248..d0e138f8b880a 100644
--- a/drivers/net/wireless/realtek/rtw89/mac.c
+++ b/drivers/net/wireless/realtek/rtw89/mac.c
@@ -3398,6 +3398,8 @@ int rtw89_mac_enable_cpu(struct rtw89_dev *rtwdev, u8 boot_reason, bool dlfw)
if (rtw89_read32(rtwdev, R_AX_PLATFORM_ENABLE) & B_AX_WCPU_EN)
return -EFAULT;
+ rtw89_write32(rtwdev, R_AX_UDM1, 0);
+ rtw89_write32(rtwdev, R_AX_UDM2, 0);
rtw89_write32(rtwdev, R_AX_HALT_H2C_CTRL, 0);
rtw89_write32(rtwdev, R_AX_HALT_C2H_CTRL, 0);
rtw89_write32(rtwdev, R_AX_HALT_H2C, 0);
diff --git a/drivers/net/wireless/realtek/rtw89/reg.h b/drivers/net/wireless/realtek/rtw89/reg.h
index e5c0ab43ab7a0..c75aee61f383d 100644
--- a/drivers/net/wireless/realtek/rtw89/reg.h
+++ b/drivers/net/wireless/realtek/rtw89/reg.h
@@ -207,6 +207,11 @@
#define R_AX_UDM0 0x01F0
#define R_AX_UDM1 0x01F4
+#define B_AX_UDM1_MASK GENMASK(31, 16)
+#define B_AX_UDM1_HALMAC_C2H_ENQ_CNT_MASK GENMASK(15, 12)
+#define B_AX_UDM1_HALMAC_H2C_DEQ_CNT_MASK GENMASK(11, 8)
+#define B_AX_UDM1_WCPU_C2H_ENQ_CNT_MASK GENMASK(7, 4)
+#define B_AX_UDM1_WCPU_H2C_DEQ_CNT_MASK GENMASK(3, 0)
#define R_AX_UDM2 0x01F8
#define R_AX_UDM3 0x01FC
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8852a.c b/drivers/net/wireless/realtek/rtw89/rtw8852a.c
index 9c42b6abd2232..5f7e948507f8a 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8852a.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8852a.c
@@ -2131,9 +2131,11 @@ const struct rtw89_chip_info rtw8852a_chip_info = {
.h2c_desc_size = sizeof(struct rtw89_txwd_body),
.txwd_body_size = sizeof(struct rtw89_txwd_body),
.h2c_ctrl_reg = R_AX_H2CREG_CTRL,
+ .h2c_counter_reg = {R_AX_UDM1 + 1, B_AX_UDM1_HALMAC_H2C_DEQ_CNT_MASK >> 8},
.h2c_regs = rtw8852a_h2c_regs,
.c2h_ctrl_reg = R_AX_C2HREG_CTRL,
.c2h_regs = rtw8852a_c2h_regs,
+ .c2h_counter_reg = {R_AX_UDM1 + 1, B_AX_UDM1_HALMAC_C2H_ENQ_CNT_MASK >> 8},
.page_regs = &rtw8852a_page_regs,
.cfo_src_fd = false,
.dcfo_comp = &rtw8852a_dcfo_comp,
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8852b.c b/drivers/net/wireless/realtek/rtw89/rtw8852b.c
index 499ae0389c715..895d216cfa27b 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8852b.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8852b.c
@@ -2508,8 +2508,10 @@ const struct rtw89_chip_info rtw8852b_chip_info = {
.h2c_desc_size = sizeof(struct rtw89_txwd_body),
.txwd_body_size = sizeof(struct rtw89_txwd_body),
.h2c_ctrl_reg = R_AX_H2CREG_CTRL,
+ .h2c_counter_reg = {R_AX_UDM1 + 1, B_AX_UDM1_HALMAC_H2C_DEQ_CNT_MASK >> 8},
.h2c_regs = rtw8852b_h2c_regs,
.c2h_ctrl_reg = R_AX_C2HREG_CTRL,
+ .c2h_counter_reg = {R_AX_UDM1 + 1, B_AX_UDM1_HALMAC_C2H_ENQ_CNT_MASK >> 8},
.c2h_regs = rtw8852b_c2h_regs,
.page_regs = &rtw8852b_page_regs,
.cfo_src_fd = true,
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8852c.c b/drivers/net/wireless/realtek/rtw89/rtw8852c.c
index 8af813132f71d..e8e577a1b9fc4 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8852c.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8852c.c
@@ -2867,8 +2867,10 @@ const struct rtw89_chip_info rtw8852c_chip_info = {
.h2c_desc_size = sizeof(struct rtw89_rxdesc_short),
.txwd_body_size = sizeof(struct rtw89_txwd_body_v1),
.h2c_ctrl_reg = R_AX_H2CREG_CTRL_V1,
+ .h2c_counter_reg = {R_AX_UDM1 + 1, B_AX_UDM1_HALMAC_H2C_DEQ_CNT_MASK >> 8},
.h2c_regs = rtw8852c_h2c_regs,
.c2h_ctrl_reg = R_AX_C2HREG_CTRL_V1,
+ .c2h_counter_reg = {R_AX_UDM1 + 1, B_AX_UDM1_HALMAC_C2H_ENQ_CNT_MASK >> 8},
.c2h_regs = rtw8852c_c2h_regs,
.page_regs = &rtw8852c_page_regs,
.cfo_src_fd = false,
--
2.25.1
