[PATCH 5.10.y-cip 44/61] ravb: Initialize GbEthernet E-MAC


Lad Prabhakar
 

From: Biju Das <biju.das.jz@...>

commit 16a2351992353ca7f12824c81feed783306d7f5f upstream.

Initialize GbEthernet E-MAC found on RZ/G2L SoC.
This patch also renames ravb_set_rate to ravb_set_rate_rcar and
ravb_rcar_emac_init to ravb_emac_init_rcar to be consistent with
the naming convention used in sh_eth driver.

Signed-off-by: Biju Das <biju.das.jz@...>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...>
Signed-off-by: David S. Miller <davem@...>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...>
---
drivers/net/ethernet/renesas/ravb.h | 20 +++++++--
drivers/net/ethernet/renesas/ravb_main.c | 55 ++++++++++++++++++++----
2 files changed, 62 insertions(+), 13 deletions(-)

diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
index d83d3b4f3f5f..5dc1324786e0 100644
--- a/drivers/net/ethernet/renesas/ravb.h
+++ b/drivers/net/ethernet/renesas/ravb.h
@@ -188,6 +188,7 @@ enum ravb_reg {
PIR = 0x0520,
PSR = 0x0528,
PIPR = 0x052c,
+ CXR31 = 0x0530, /* RZ/G2L only */
MPR = 0x0558,
PFTCR = 0x055c,
PFRCR = 0x0560,
@@ -811,10 +812,11 @@ enum ECMR_BIT {
ECMR_TXF = 0x00010000, /* Documented for R-Car Gen3 only */
ECMR_RXF = 0x00020000,
ECMR_PFR = 0x00040000,
- ECMR_ZPF = 0x00080000, /* Documented for R-Car Gen3 only */
+ ECMR_ZPF = 0x00080000, /* Documented for R-Car Gen3 and RZ/G2L */
ECMR_RZPF = 0x00100000,
ECMR_DPAD = 0x00200000,
ECMR_RCSC = 0x00800000,
+ ECMR_RCPT = 0x02000000, /* Documented for RZ/G2L only */
ECMR_TRCCM = 0x04000000,
};

@@ -824,6 +826,7 @@ enum ECSR_BIT {
ECSR_MPD = 0x00000002,
ECSR_LCHNG = 0x00000004,
ECSR_PHYI = 0x00000008,
+ ECSR_PFRI = 0x00000010,
};

/* ECSIPR */
@@ -858,9 +861,13 @@ enum MPR_BIT {

/* GECMR */
enum GECMR_BIT {
- GECMR_SPEED = 0x00000001,
- GECMR_SPEED_100 = 0x00000000,
- GECMR_SPEED_1000 = 0x00000001,
+ GECMR_SPEED = 0x00000001,
+ GECMR_SPEED_100 = 0x00000000,
+ GECMR_SPEED_1000 = 0x00000001,
+ GBETH_GECMR_SPEED = 0x00000030,
+ GBETH_GECMR_SPEED_10 = 0x00000000,
+ GBETH_GECMR_SPEED_100 = 0x00000010,
+ GBETH_GECMR_SPEED_1000 = 0x00000020,
};

/* The Ethernet AVB descriptor definitions. */
@@ -950,6 +957,11 @@ enum RAVB_QUEUE {
RAVB_NC, /* Network Control Queue */
};

+enum CXR31_BIT {
+ CXR31_SEL_LINK0 = 0x00000001,
+ CXR31_SEL_LINK1 = 0x00000008,
+};
+
#define DBAT_ENTRY_NUM 22
#define RX_QUEUE_OFFSET 4
#define NUM_RX_QUEUE 2
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index aff8ce0d1e3f..29c4d74b0f02 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -85,10 +85,22 @@ static int ravb_config(struct net_device *ndev)

static void ravb_set_rate_gbeth(struct net_device *ndev)
{
- /* Place holder */
+ struct ravb_private *priv = netdev_priv(ndev);
+
+ switch (priv->speed) {
+ case 10: /* 10BASE */
+ ravb_write(ndev, GBETH_GECMR_SPEED_10, GECMR);
+ break;
+ case 100: /* 100BASE */
+ ravb_write(ndev, GBETH_GECMR_SPEED_100, GECMR);
+ break;
+ case 1000: /* 1000BASE */
+ ravb_write(ndev, GBETH_GECMR_SPEED_1000, GECMR);
+ break;
+ }
}

-static void ravb_set_rate(struct net_device *ndev)
+static void ravb_set_rate_rcar(struct net_device *ndev)
{
struct ravb_private *priv = netdev_priv(ndev);

@@ -447,10 +459,35 @@ static int ravb_ring_init(struct net_device *ndev, int q)

static void ravb_emac_init_gbeth(struct net_device *ndev)
{
- /* Place holder */
+ struct ravb_private *priv = netdev_priv(ndev);
+
+ /* Receive frame limit set register */
+ ravb_write(ndev, GBETH_RX_BUFF_MAX + ETH_FCS_LEN, RFLR);
+
+ /* PAUSE prohibition */
+ ravb_write(ndev, ECMR_ZPF | ((priv->duplex > 0) ? ECMR_DM : 0) |
+ ECMR_TE | ECMR_RE | ECMR_RCPT |
+ ECMR_TXF | ECMR_RXF | ECMR_PRM, ECMR);
+
+ ravb_set_rate_gbeth(ndev);
+
+ /* Set MAC address */
+ ravb_write(ndev,
+ (ndev->dev_addr[0] << 24) | (ndev->dev_addr[1] << 16) |
+ (ndev->dev_addr[2] << 8) | (ndev->dev_addr[3]), MAHR);
+ ravb_write(ndev, (ndev->dev_addr[4] << 8) | (ndev->dev_addr[5]), MALR);
+
+ /* E-MAC status register clear */
+ ravb_write(ndev, ECSR_ICD | ECSR_LCHNG | ECSR_PFRI, ECSR);
+
+ /* E-MAC interrupt enable register */
+ ravb_write(ndev, ECSIPR_ICDIP, ECSIPR);
+
+ ravb_modify(ndev, CXR31, CXR31_SEL_LINK1, 0);
+ ravb_modify(ndev, CXR31, CXR31_SEL_LINK0, CXR31_SEL_LINK0);
}

-static void ravb_rcar_emac_init(struct net_device *ndev)
+static void ravb_emac_init_rcar(struct net_device *ndev)
{
/* Receive frame limit set register */
ravb_write(ndev, ndev->mtu + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN, RFLR);
@@ -460,7 +497,7 @@ static void ravb_rcar_emac_init(struct net_device *ndev)
(ndev->features & NETIF_F_RXCSUM ? ECMR_RCSC : 0) |
ECMR_TE | ECMR_RE, ECMR);

- ravb_set_rate(ndev);
+ ravb_set_rate_rcar(ndev);

/* Set MAC address */
ravb_write(ndev,
@@ -2138,10 +2175,10 @@ static const struct ravb_hw_info ravb_gen3_hw_info = {
.rx_ring_format = ravb_rx_ring_format,
.alloc_rx_desc = ravb_alloc_rx_desc,
.receive = ravb_rcar_rx,
- .set_rate = ravb_set_rate,
+ .set_rate = ravb_set_rate_rcar,
.set_feature = ravb_set_features_rcar,
.dmac_init = ravb_dmac_init_rcar,
- .emac_init = ravb_rcar_emac_init,
+ .emac_init = ravb_emac_init_rcar,
.gstrings_stats = ravb_gstrings_stats,
.gstrings_size = sizeof(ravb_gstrings_stats),
.net_hw_features = NETIF_F_RXCSUM,
@@ -2162,10 +2199,10 @@ static const struct ravb_hw_info ravb_gen2_hw_info = {
.rx_ring_format = ravb_rx_ring_format,
.alloc_rx_desc = ravb_alloc_rx_desc,
.receive = ravb_rcar_rx,
- .set_rate = ravb_set_rate,
+ .set_rate = ravb_set_rate_rcar,
.set_feature = ravb_set_features_rcar,
.dmac_init = ravb_dmac_init_rcar,
- .emac_init = ravb_rcar_emac_init,
+ .emac_init = ravb_emac_init_rcar,
.gstrings_stats = ravb_gstrings_stats,
.gstrings_size = sizeof(ravb_gstrings_stats),
.net_hw_features = NETIF_F_RXCSUM,
--
2.17.1

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