[PATCH v2 08/32] net: mediatek: add support for PDMA v2
Weijie Gao
weijie.gao at mediatek.com
Wed Aug 31 13:04:27 CEST 2022
This patch adds support for PDMA v2 hardware. The PDMA v2 has extended the
DMA descriptor to 8-words, and some of its fields have changed comparing
to the v1 hardware.
Reviewed-by: Ramon Fried <rfried.dev at gmail.com>
Reviewed-by: Simon Glass <sjg at chromium.org>
Signed-off-by: Weijie Gao <weijie.gao at mediatek.com>
---
v2 changes:
Add description for new fields
---
drivers/net/mtk_eth.c | 54 ++++++++++++++++++++++++++++++++-----------
drivers/net/mtk_eth.h | 53 +++++++++++++++++++++++++++++++++++-------
2 files changed, 86 insertions(+), 21 deletions(-)
diff --git a/drivers/net/mtk_eth.c b/drivers/net/mtk_eth.c
index e3738b9277..fb72baae68 100644
--- a/drivers/net/mtk_eth.c
+++ b/drivers/net/mtk_eth.c
@@ -76,10 +76,14 @@ enum mtk_switch {
* @caps Flags shown the extra capability for the SoC
* @ana_rgc3: The offset for register ANA_RGC3 related to
* sgmiisys syscon
+ * @pdma_base: Register base of PDMA block
+ * @txd_size: Tx DMA descriptor size.
+ * @rxd_size: Rx DMA descriptor size.
*/
struct mtk_soc_data {
u32 caps;
u32 ana_rgc3;
+ u32 pdma_base;
u32 txd_size;
u32 rxd_size;
};
@@ -130,13 +134,13 @@ struct mtk_eth_priv {
static void mtk_pdma_write(struct mtk_eth_priv *priv, u32 reg, u32 val)
{
- writel(val, priv->fe_base + PDMA_BASE + reg);
+ writel(val, priv->fe_base + priv->soc->pdma_base + reg);
}
static void mtk_pdma_rmw(struct mtk_eth_priv *priv, u32 reg, u32 clr,
u32 set)
{
- clrsetbits_le32(priv->fe_base + PDMA_BASE + reg, clr, set);
+ clrsetbits_le32(priv->fe_base + priv->soc->pdma_base + reg, clr, set);
}
static void mtk_gdma_write(struct mtk_eth_priv *priv, int no, u32 reg,
@@ -1133,8 +1137,8 @@ static void mtk_mac_init(struct mtk_eth_priv *priv)
static void mtk_eth_fifo_init(struct mtk_eth_priv *priv)
{
char *pkt_base = priv->pkt_pool;
- struct mtk_tx_dma *txd;
- struct mtk_rx_dma *rxd;
+ struct mtk_tx_dma_v2 *txd;
+ struct mtk_rx_dma_v2 *rxd;
int i;
mtk_pdma_rmw(priv, PDMA_GLO_CFG_REG, 0xffff0000, 0);
@@ -1155,7 +1159,11 @@ static void mtk_eth_fifo_init(struct mtk_eth_priv *priv)
txd->txd1 = virt_to_phys(pkt_base);
txd->txd2 = PDMA_TXD2_DDONE | PDMA_TXD2_LS0;
- txd->txd4 = PDMA_TXD4_FPORT_SET(priv->gmac_id + 1);
+
+ if (MTK_HAS_CAPS(priv->soc->caps, MTK_NETSYS_V2))
+ txd->txd5 = PDMA_V2_TXD5_FPORT_SET(priv->gmac_id + 1);
+ else
+ txd->txd4 = PDMA_V1_TXD4_FPORT_SET(priv->gmac_id + 1);
pkt_base += PKTSIZE_ALIGN;
}
@@ -1164,7 +1172,11 @@ static void mtk_eth_fifo_init(struct mtk_eth_priv *priv)
rxd = priv->rx_ring_noc + i * priv->soc->rxd_size;
rxd->rxd1 = virt_to_phys(pkt_base);
- rxd->rxd2 = PDMA_RXD2_PLEN0_SET(PKTSIZE_ALIGN);
+
+ if (MTK_HAS_CAPS(priv->soc->caps, MTK_NETSYS_V2))
+ rxd->rxd2 = PDMA_V2_RXD2_PLEN0_SET(PKTSIZE_ALIGN);
+ else
+ rxd->rxd2 = PDMA_V1_RXD2_PLEN0_SET(PKTSIZE_ALIGN);
pkt_base += PKTSIZE_ALIGN;
}
@@ -1193,6 +1205,9 @@ static int mtk_eth_start(struct udevice *dev)
reset_deassert(&priv->rst_fe);
mdelay(10);
+ if (MTK_HAS_CAPS(priv->soc->caps, MTK_NETSYS_V2))
+ setbits_le32(priv->fe_base + FE_GLO_MISC_REG, PDMA_VER_V2);
+
/* Packets forward to PDMA */
mtk_gdma_write(priv, priv->gmac_id, GDMA_IG_CTRL_REG, GDMA_FWD_TO_CPU);
@@ -1227,7 +1242,7 @@ static void mtk_eth_stop(struct udevice *dev)
TX_WB_DDONE | RX_DMA_EN | TX_DMA_EN, 0);
udelay(500);
- wait_for_bit_le32(priv->fe_base + PDMA_BASE + PDMA_GLO_CFG_REG,
+ wait_for_bit_le32(priv->fe_base + priv->soc->pdma_base + PDMA_GLO_CFG_REG,
RX_DMA_BUSY | TX_DMA_BUSY, 0, 5000, 0);
}
@@ -1252,7 +1267,7 @@ static int mtk_eth_send(struct udevice *dev, void *packet, int length)
{
struct mtk_eth_priv *priv = dev_get_priv(dev);
u32 idx = priv->tx_cpu_owner_idx0;
- struct mtk_tx_dma *txd;
+ struct mtk_tx_dma_v2 *txd;
void *pkt_base;
txd = priv->tx_ring_noc + idx * priv->soc->txd_size;
@@ -1267,7 +1282,10 @@ static int mtk_eth_send(struct udevice *dev, void *packet, int length)
flush_dcache_range((ulong)pkt_base, (ulong)pkt_base +
roundup(length, ARCH_DMA_MINALIGN));
- txd->txd2 = PDMA_TXD2_LS0 | PDMA_TXD2_SDL0_SET(length);
+ if (MTK_HAS_CAPS(priv->soc->caps, MTK_NETSYS_V2))
+ txd->txd2 = PDMA_TXD2_LS0 | PDMA_V2_TXD2_SDL0_SET(length);
+ else
+ txd->txd2 = PDMA_TXD2_LS0 | PDMA_V1_TXD2_SDL0_SET(length);
priv->tx_cpu_owner_idx0 = (priv->tx_cpu_owner_idx0 + 1) % NUM_TX_DESC;
mtk_pdma_write(priv, TX_CTX_IDX_REG(0), priv->tx_cpu_owner_idx0);
@@ -1279,7 +1297,7 @@ static int mtk_eth_recv(struct udevice *dev, int flags, uchar **packetp)
{
struct mtk_eth_priv *priv = dev_get_priv(dev);
u32 idx = priv->rx_dma_owner_idx0;
- struct mtk_rx_dma *rxd;
+ struct mtk_rx_dma_v2 *rxd;
uchar *pkt_base;
u32 length;
@@ -1290,7 +1308,10 @@ static int mtk_eth_recv(struct udevice *dev, int flags, uchar **packetp)
return -EAGAIN;
}
- length = PDMA_RXD2_PLEN0_GET(rxd->rxd2);
+ if (MTK_HAS_CAPS(priv->soc->caps, MTK_NETSYS_V2))
+ length = PDMA_V2_RXD2_PLEN0_GET(rxd->rxd2);
+ else
+ length = PDMA_V1_RXD2_PLEN0_GET(rxd->rxd2);
pkt_base = (void *)phys_to_virt(rxd->rxd1);
invalidate_dcache_range((ulong)pkt_base, (ulong)pkt_base +
@@ -1306,11 +1327,14 @@ static int mtk_eth_free_pkt(struct udevice *dev, uchar *packet, int length)
{
struct mtk_eth_priv *priv = dev_get_priv(dev);
u32 idx = priv->rx_dma_owner_idx0;
- struct mtk_rx_dma *rxd;
+ struct mtk_rx_dma_v2 *rxd;
rxd = priv->rx_ring_noc + idx * priv->soc->rxd_size;
- rxd->rxd2 = PDMA_RXD2_PLEN0_SET(PKTSIZE_ALIGN);
+ if (MTK_HAS_CAPS(priv->soc->caps, MTK_NETSYS_V2))
+ rxd->rxd2 = PDMA_V2_RXD2_PLEN0_SET(PKTSIZE_ALIGN);
+ else
+ rxd->rxd2 = PDMA_V1_RXD2_PLEN0_SET(PKTSIZE_ALIGN);
mtk_pdma_write(priv, RX_CRX_IDX_REG(0), idx);
priv->rx_dma_owner_idx0 = (priv->rx_dma_owner_idx0 + 1) % NUM_RX_DESC;
@@ -1498,24 +1522,28 @@ static int mtk_eth_of_to_plat(struct udevice *dev)
static const struct mtk_soc_data mt7629_data = {
.ana_rgc3 = 0x128,
+ .pdma_base = PDMA_V1_BASE,
.txd_size = sizeof(struct mtk_tx_dma),
.rxd_size = sizeof(struct mtk_rx_dma),
};
static const struct mtk_soc_data mt7623_data = {
.caps = MT7623_CAPS,
+ .pdma_base = PDMA_V1_BASE,
.txd_size = sizeof(struct mtk_tx_dma),
.rxd_size = sizeof(struct mtk_rx_dma),
};
static const struct mtk_soc_data mt7622_data = {
.ana_rgc3 = 0x2028,
+ .pdma_base = PDMA_V1_BASE,
.txd_size = sizeof(struct mtk_tx_dma),
.rxd_size = sizeof(struct mtk_rx_dma),
};
static const struct mtk_soc_data mt7621_data = {
.caps = MT7621_CAPS,
+ .pdma_base = PDMA_V1_BASE,
.txd_size = sizeof(struct mtk_tx_dma),
.rxd_size = sizeof(struct mtk_rx_dma),
};
diff --git a/drivers/net/mtk_eth.h b/drivers/net/mtk_eth.h
index 65bc9fcc04..236c498a1b 100644
--- a/drivers/net/mtk_eth.h
+++ b/drivers/net/mtk_eth.h
@@ -15,6 +15,7 @@
enum mkt_eth_capabilities {
MTK_TRGMII_BIT,
MTK_TRGMII_MT7621_CLK_BIT,
+ MTK_NETSYS_V2_BIT,
/* PATH BITS */
MTK_ETH_PATH_GMAC1_TRGMII_BIT,
@@ -22,6 +23,7 @@ enum mkt_eth_capabilities {
#define MTK_TRGMII BIT(MTK_TRGMII_BIT)
#define MTK_TRGMII_MT7621_CLK BIT(MTK_TRGMII_MT7621_CLK_BIT)
+#define MTK_NETSYS_V2 BIT(MTK_NETSYS_V2_BIT)
/* Supported path present on SoCs */
#define MTK_ETH_PATH_GMAC1_TRGMII BIT(MTK_ETH_PATH_GMAC1_TRGMII_BIT)
@@ -35,7 +37,8 @@ enum mkt_eth_capabilities {
#define MT7623_CAPS (MTK_GMAC1_TRGMII)
/* Frame Engine Register Bases */
-#define PDMA_BASE 0x0800
+#define PDMA_V1_BASE 0x0800
+#define PDMA_V2_BASE 0x6000
#define GDMA1_BASE 0x0500
#define GDMA2_BASE 0x1500
#define GMAC_BASE 0x10000
@@ -74,6 +77,8 @@ enum mkt_eth_capabilities {
#define SGMSYS_SPEED_2500 BIT(2)
/* Frame Engine Registers */
+#define FE_GLO_MISC_REG 0x124
+#define PDMA_VER_V2 BIT(4)
/* PDMA */
#define TX_BASE_PTR_REG(n) (0x000 + (n) * 0x10)
@@ -444,6 +449,17 @@ struct mtk_rx_dma {
unsigned int rxd4;
} __packed __aligned(4);
+struct mtk_rx_dma_v2 {
+ unsigned int rxd1;
+ unsigned int rxd2;
+ unsigned int rxd3;
+ unsigned int rxd4;
+ unsigned int rxd5;
+ unsigned int rxd6;
+ unsigned int rxd7;
+ unsigned int rxd8;
+} __packed __aligned(4);
+
struct mtk_tx_dma {
unsigned int txd1;
unsigned int txd2;
@@ -451,20 +467,41 @@ struct mtk_tx_dma {
unsigned int txd4;
} __packed __aligned(4);
+struct mtk_tx_dma_v2 {
+ unsigned int txd1;
+ unsigned int txd2;
+ unsigned int txd3;
+ unsigned int txd4;
+ unsigned int txd5;
+ unsigned int txd6;
+ unsigned int txd7;
+ unsigned int txd8;
+} __packed __aligned(4);
+
/* PDMA TXD fields */
#define PDMA_TXD2_DDONE BIT(31)
#define PDMA_TXD2_LS0 BIT(30)
-#define PDMA_TXD2_SDL0_M GENMASK(29, 16)
-#define PDMA_TXD2_SDL0_SET(_v) FIELD_PREP(PDMA_TXD2_SDL0_M, (_v))
+#define PDMA_V1_TXD2_SDL0_M GENMASK(29, 16)
+#define PDMA_V1_TXD2_SDL0_SET(_v) FIELD_PREP(PDMA_V1_TXD2_SDL0_M, (_v))
+#define PDMA_V2_TXD2_SDL0_M GENMASK(23, 8)
+#define PDMA_V2_TXD2_SDL0_SET(_v) FIELD_PREP(PDMA_V2_TXD2_SDL0_M, (_v))
+
+#define PDMA_V1_TXD4_FPORT_M GENMASK(27, 25)
+#define PDMA_V1_TXD4_FPORT_SET(_v) FIELD_PREP(PDMA_V1_TXD4_FPORT_M, (_v))
+#define PDMA_V2_TXD4_FPORT_M GENMASK(27, 24)
+#define PDMA_V2_TXD4_FPORT_SET(_v) FIELD_PREP(PDMA_V2_TXD4_FPORT_M, (_v))
-#define PDMA_TXD4_FPORT_M GENMASK(27, 25)
-#define PDMA_TXD4_FPORT_SET(_v) FIELD_PREP(PDMA_TXD4_FPORT_M, (_v))
+#define PDMA_V2_TXD5_FPORT_M GENMASK(19, 16)
+#define PDMA_V2_TXD5_FPORT_SET(_v) FIELD_PREP(PDMA_V2_TXD5_FPORT_M, (_v))
/* PDMA RXD fields */
#define PDMA_RXD2_DDONE BIT(31)
#define PDMA_RXD2_LS0 BIT(30)
-#define PDMA_RXD2_PLEN0_M GENMASK(29, 16)
-#define PDMA_RXD2_PLEN0_GET(_v) FIELD_GET(PDMA_RXD2_PLEN0_M, (_v))
-#define PDMA_RXD2_PLEN0_SET(_v) FIELD_PREP(PDMA_RXD2_PLEN0_M, (_v))
+#define PDMA_V1_RXD2_PLEN0_M GENMASK(29, 16)
+#define PDMA_V1_RXD2_PLEN0_GET(_v) FIELD_GET(PDMA_V1_RXD2_PLEN0_M, (_v))
+#define PDMA_V1_RXD2_PLEN0_SET(_v) FIELD_PREP(PDMA_V1_RXD2_PLEN0_M, (_v))
+#define PDMA_V2_RXD2_PLEN0_M GENMASK(23, 8)
+#define PDMA_V2_RXD2_PLEN0_GET(_v) FIELD_GET(PDMA_V2_RXD2_PLEN0_M, (_v))
+#define PDMA_V2_RXD2_PLEN0_SET(_v) FIELD_PREP(PDMA_V2_RXD2_PLEN0_M, (_v))
#endif /* _MTK_ETH_H_ */
--
2.17.1
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