[PATCH 3/8] wifi: mt76: mt7996: add DMA support for mt7992

Shayne Chen
2023-11-13T07:08:01Z

From: Benjamin Lin <benjamin-jw.lin@mediatek.com>

Add DMA TX/RX queues and RRO init flow for mt7992 chipsets.
This is a preliminary patch for mt7992 chipsets support.

Co-developed-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
Co-developed-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Benjamin Lin <benjamin-jw.lin@mediatek.com>
---
.../net/wireless/mediatek/mt76/mt7996/dma.c | 58 +++++++++++++++----
.../net/wireless/mediatek/mt76/mt7996/init.c | 9 ++-
.../wireless/mediatek/mt76/mt7996/mt7996.h | 7 ++-
.../net/wireless/mediatek/mt76/mt7996/regs.h | 4 +-
4 files changed, 61 insertions(+), 17 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/dma.c b/drivers/net/wireless/mediatek/mt76/mt7996/dma.c
index e88096f442d3..c68fec628db5 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/dma.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/dma.c
@@ -57,13 +57,19 @@ static void mt7996_dma_config(struct mt7996_dev *dev)
RXQ_CONFIG(MT_RXQ_MCU, WFDMA0, MT_INT_RX_DONE_WM, MT7996_RXQ_MCU_WM);
RXQ_CONFIG(MT_RXQ_MCU_WA, WFDMA0, MT_INT_RX_DONE_WA, MT7996_RXQ_MCU_WA);

- /* band0/band1 */
+ /* mt7996: band0 and band1, mt7992: band0 */
RXQ_CONFIG(MT_RXQ_MAIN, WFDMA0, MT_INT_RX_DONE_BAND0, MT7996_RXQ_BAND0);
RXQ_CONFIG(MT_RXQ_MAIN_WA, WFDMA0, MT_INT_RX_DONE_WA_MAIN, MT7996_RXQ_MCU_WA_MAIN);

- /* band2 */
- RXQ_CONFIG(MT_RXQ_BAND2, WFDMA0, MT_INT_RX_DONE_BAND2, MT7996_RXQ_BAND2);
- RXQ_CONFIG(MT_RXQ_BAND2_WA, WFDMA0, MT_INT_RX_DONE_WA_TRI, MT7996_RXQ_MCU_WA_TRI);
+ if (is_mt7996(&dev->mt76)) {
+ /* mt7996 band2 */
+ RXQ_CONFIG(MT_RXQ_BAND2, WFDMA0, MT_INT_RX_DONE_BAND2, MT7996_RXQ_BAND2);
+ RXQ_CONFIG(MT_RXQ_BAND2_WA, WFDMA0, MT_INT_RX_DONE_WA_TRI, MT7996_RXQ_MCU_WA_TRI);
+ } else {
+ /* mt7992 band1 */
+ RXQ_CONFIG(MT_RXQ_BAND1, WFDMA0, MT_INT_RX_DONE_BAND1, MT7996_RXQ_BAND1);
+ RXQ_CONFIG(MT_RXQ_BAND1_WA, WFDMA0, MT_INT_RX_DONE_WA_EXT, MT7996_RXQ_MCU_WA_EXT);
+ }

if (dev->has_rro) {
/* band0 */
@@ -90,8 +96,12 @@ static void mt7996_dma_config(struct mt7996_dev *dev)

/* data tx queue */
TXQ_CONFIG(0, WFDMA0, MT_INT_TX_DONE_BAND0, MT7996_TXQ_BAND0);
- TXQ_CONFIG(1, WFDMA0, MT_INT_TX_DONE_BAND1, MT7996_TXQ_BAND1);
- TXQ_CONFIG(2, WFDMA0, MT_INT_TX_DONE_BAND2, MT7996_TXQ_BAND2);
+ if (is_mt7996(&dev->mt76)) {
+ TXQ_CONFIG(1, WFDMA0, MT_INT_TX_DONE_BAND1, MT7996_TXQ_BAND1);
+ TXQ_CONFIG(2, WFDMA0, MT_INT_TX_DONE_BAND2, MT7996_TXQ_BAND2);
+ } else {
+ TXQ_CONFIG(1, WFDMA0, MT_INT_TX_DONE_BAND1, MT7996_TXQ_BAND1);
+ }

/* mcu tx queue */
MCUQ_CONFIG(MT_MCUQ_WM, WFDMA0, MT_INT_TX_DONE_MCU_WM, MT7996_TXQ_MCU_WM);
@@ -111,6 +121,7 @@ static u32 __mt7996_dma_prefetch_base(u16 *base, u8 depth)
static void __mt7996_dma_prefetch(struct mt7996_dev *dev, u32 ofs)
{
u16 base = 0;
+ u8 queue;

#define PREFETCH(_depth) (__mt7996_dma_prefetch_base(&base, (_depth)))
/* prefetch SRAM wrapping boundary for tx/rx ring. */
@@ -123,9 +134,14 @@ static void __mt7996_dma_prefetch(struct mt7996_dev *dev, u32 ofs)
mt76_wr(dev, MT_RXQ_BAND1_CTRL(MT_RXQ_MCU) + ofs, PREFETCH(0x2));
mt76_wr(dev, MT_RXQ_BAND1_CTRL(MT_RXQ_MCU_WA) + ofs, PREFETCH(0x2));
mt76_wr(dev, MT_RXQ_BAND1_CTRL(MT_RXQ_MAIN_WA) + ofs, PREFETCH(0x2));
- mt76_wr(dev, MT_RXQ_BAND1_CTRL(MT_RXQ_BAND2_WA) + ofs, PREFETCH(0x2));
+
+ queue = is_mt7996(&dev->mt76) ? MT_RXQ_BAND2_WA : MT_RXQ_BAND1_WA;
+ mt76_wr(dev, MT_RXQ_BAND1_CTRL(queue) + ofs, PREFETCH(0x2));
+
mt76_wr(dev, MT_RXQ_BAND1_CTRL(MT_RXQ_MAIN) + ofs, PREFETCH(0x10));
- mt76_wr(dev, MT_RXQ_BAND1_CTRL(MT_RXQ_BAND2) + ofs, PREFETCH(0x10));
+
+ queue = is_mt7996(&dev->mt76) ? MT_RXQ_BAND2 : MT_RXQ_BAND1;
+ mt76_wr(dev, MT_RXQ_BAND1_CTRL(queue) + ofs, PREFETCH(0x10));

if (dev->has_rro) {
mt76_wr(dev, MT_RXQ_BAND1_CTRL(MT_RXQ_RRO_BAND0) + ofs,
@@ -488,7 +504,7 @@ int mt7996_dma_init(struct mt7996_dev *dev)
if (ret)
return ret;

- /* rx data queue for band0 and band1 */
+ /* rx data queue for band0 and mt7996 band1 */
if (mtk_wed_device_active(wed) && mtk_wed_get_rx_capa(wed)) {
dev->mt76.q_rx[MT_RXQ_MAIN].flags = MT_WED_Q_RX(0);
dev->mt76.q_rx[MT_RXQ_MAIN].wed = wed;
@@ -517,7 +533,7 @@ int mt7996_dma_init(struct mt7996_dev *dev)
return ret;

if (mt7996_band_valid(dev, MT_BAND2)) {
- /* rx data queue for band2 */
+ /* rx data queue for mt7996 band2 */
rx_base = MT_RXQ_RING_BASE(MT_RXQ_BAND2) + hif1_ofs;
ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_BAND2],
MT_RXQ_ID(MT_RXQ_BAND2),
@@ -527,7 +543,7 @@ int mt7996_dma_init(struct mt7996_dev *dev)
if (ret)
return ret;

- /* tx free notify event from WA for band2
+ /* tx free notify event from WA for mt7996 band2
* use pcie0's rx ring3, but, redirect pcie0 rx ring3 interrupt to pcie1
*/
if (mtk_wed_device_active(wed_hif2) && !dev->has_rro) {
@@ -542,6 +558,26 @@ int mt7996_dma_init(struct mt7996_dev *dev)
MT_RXQ_RING_BASE(MT_RXQ_BAND2_WA));
if (ret)
return ret;
+ } else if (mt7996_band_valid(dev, MT_BAND1)) {
+ /* rx data queue for mt7992 band1 */
+ rx_base = MT_RXQ_RING_BASE(MT_RXQ_BAND1) + hif1_ofs;
+ ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_BAND1],
+ MT_RXQ_ID(MT_RXQ_BAND1),
+ MT7996_RX_RING_SIZE,
+ MT_RX_BUF_SIZE,
+ rx_base);
+ if (ret)
+ return ret;
+
+ /* tx free notify event from WA for mt7992 band1 */
+ rx_base = MT_RXQ_RING_BASE(MT_RXQ_BAND1_WA) + hif1_ofs;
+ ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_BAND1_WA],
+ MT_RXQ_ID(MT_RXQ_BAND1_WA),
+ MT7996_RX_MCU_RING_SIZE,
+ MT_RX_BUF_SIZE,
+ rx_base);
+ if (ret)
+ return ret;
}

if (mtk_wed_device_active(wed) && mtk_wed_get_rx_capa(wed) &&
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/init.c b/drivers/net/wireless/mediatek/mt76/mt7996/init.c
index 2a7c367afae1..0cf0d1fe420a 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/init.c
@@ -513,7 +513,12 @@ void mt7996_mac_init(struct mt7996_dev *dev)
mt76_rmw_field(dev, MT_DMA_TCRF1(2), MT_DMA_TCRF1_QIDX, 0);

/* rro module init */
- mt7996_mcu_set_rro(dev, UNI_RRO_SET_PLATFORM_TYPE, 2);
+ if (is_mt7996(&dev->mt76))
+ mt7996_mcu_set_rro(dev, UNI_RRO_SET_PLATFORM_TYPE, 2);
+ else
+ mt7996_mcu_set_rro(dev, UNI_RRO_SET_PLATFORM_TYPE,
+ dev->hif2 ? 7 : 0);
+
if (dev->has_rro) {
u16 timeout;

@@ -570,7 +575,7 @@ static int mt7996_register_phy(struct mt7996_dev *dev, struct mt7996_phy *phy,
if (phy)
return 0;

- if (band == MT_BAND2 && dev->hif2) {
+ if (is_mt7996(&dev->mt76) && band == MT_BAND2 && dev->hif2) {
hif1_ofs = MT_WFDMA0_PCIE1(0) - MT_WFDMA0(0);
wed = &dev->mt76.mmio.wed_hif2;
}
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
index 1a36ef50f6e1..87822663870f 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
@@ -104,10 +104,10 @@ enum mt7996_rxq_id {
MT7996_RXQ_MCU_WM = 0,
MT7996_RXQ_MCU_WA,
MT7996_RXQ_MCU_WA_MAIN = 2,
- MT7996_RXQ_MCU_WA_EXT = 2,/* unused */
+ MT7996_RXQ_MCU_WA_EXT = 3, /* for mt7992 */
MT7996_RXQ_MCU_WA_TRI = 3,
MT7996_RXQ_BAND0 = 4,
- MT7996_RXQ_BAND1 = 4,/* unused */
+ MT7996_RXQ_BAND1 = 5, /* for mt7992 */
MT7996_RXQ_BAND2 = 5,
MT7996_RXQ_RRO_BAND0 = 8,
MT7996_RXQ_RRO_BAND1 = 8,/* unused */
@@ -399,6 +399,9 @@ mt7996_phy3(struct mt7996_dev *dev)
static inline bool
mt7996_band_valid(struct mt7996_dev *dev, u8 band)
{
+ if (is_mt7992(&dev->mt76))
+ return band <= MT_BAND1;
+
/* tri-band support */
if (band <= MT_BAND2 &&
mt76_get_field(dev, MT_PAD_GPIO, MT_PAD_GPIO_ADIE_COMB) <= 1)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/regs.h b/drivers/net/wireless/mediatek/mt76/mt7996/regs.h
index aee577d90ddb..6623a6ba12d6 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/regs.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/regs.h
@@ -461,12 +461,12 @@ enum base_rev {
#define MT_INT1_MASK_CSR MT_WFDMA0_PCIE1(0x204)

#define MT_INT_RX_DONE_BAND0 BIT(12)
-#define MT_INT_RX_DONE_BAND1 BIT(12)
+#define MT_INT_RX_DONE_BAND1 BIT(13) /* for mt7992 */
#define MT_INT_RX_DONE_BAND2 BIT(13)
#define MT_INT_RX_DONE_WM BIT(0)
#define MT_INT_RX_DONE_WA BIT(1)
#define MT_INT_RX_DONE_WA_MAIN BIT(2)
-#define MT_INT_RX_DONE_WA_EXT BIT(2)
+#define MT_INT_RX_DONE_WA_EXT BIT(3) /* for mt7992 */
#define MT_INT_RX_DONE_WA_TRI BIT(3)
#define MT_INT_RX_TXFREE_MAIN BIT(17)
#define MT_INT_RX_TXFREE_TRI BIT(15)
--
2.39.2