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Message-Id: <20210923140813.13541-11-biju.das.jz@bp.renesas.com>
Date: Thu, 23 Sep 2021 15:08:05 +0100
From: Biju Das <biju.das.jz@...renesas.com>
To: "David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>
Cc: Biju Das <biju.das.jz@...renesas.com>,
Sergey Shtylyov <s.shtylyov@....ru>,
Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
Andrew Lunn <andrew@...n.ch>,
Sergei Shtylyov <sergei.shtylyov@...il.com>,
Geert Uytterhoeven <geert+renesas@...der.be>,
Adam Ford <aford173@...il.com>,
Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
netdev@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
Chris Paterson <Chris.Paterson2@...esas.com>,
Biju Das <biju.das@...renesas.com>
Subject: [RFC/PATCH 10/18] ravb: Initialize GbEthernet E-MAC
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@...renesas.com>
---
drivers/net/ethernet/renesas/ravb.h | 15 ++++--
drivers/net/ethernet/renesas/ravb_main.c | 64 +++++++++++++++++++-----
2 files changed, 62 insertions(+), 17 deletions(-)
diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
index 7f68f9b8349c..7532cb51d7b8 100644
--- a/drivers/net/ethernet/renesas/ravb.h
+++ b/drivers/net/ethernet/renesas/ravb.h
@@ -204,6 +204,7 @@ enum ravb_reg {
TLFRCR = 0x0758,
RFCR = 0x0760,
MAFCR = 0x0778,
+ CSR0 = 0x0800, /* Documented for RZ/G2L only */
};
@@ -814,10 +815,11 @@ 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,
};
@@ -827,6 +829,7 @@ enum ECSR_BIT {
ECSR_MPD = 0x00000002,
ECSR_LCHNG = 0x00000004,
ECSR_PHYI = 0x00000008,
+ ECSR_PFRI = 0x00000010,
};
/* ECSIPR */
@@ -861,9 +864,13 @@ 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,
+ RGETH_GECMR_SPEED = 0x00000030,
+ RGETH_GECMR_SPEED_10 = 0x00000000,
+ RGETH_GECMR_SPEED_100 = 0x00000010,
+ RGETH_GECMR_SPEED_1000 = 0x00000020,
};
/* The Ethernet AVB descriptor definitions. */
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 04bff44b7660..7f06adbd00e1 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -83,12 +83,24 @@ static int ravb_config(struct net_device *ndev)
return error;
}
-static void ravb_rgeth_set_rate(struct net_device *ndev)
+static void ravb_set_rate_rgeth(struct net_device *ndev)
{
- /* Place holder */
+ struct ravb_private *priv = netdev_priv(ndev);
+
+ switch (priv->speed) {
+ case 10: /* 10BASE */
+ ravb_write(ndev, RGETH_GECMR_SPEED_10, GECMR);
+ break;
+ case 100: /* 100BASE */
+ ravb_write(ndev, RGETH_GECMR_SPEED_100, GECMR);
+ break;
+ case 1000: /* 1000BASE */
+ ravb_write(ndev, RGETH_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);
@@ -447,12 +459,38 @@ static int ravb_ring_init(struct net_device *ndev, int q)
return -ENOMEM;
}
-static void ravb_rgeth_emac_init(struct net_device *ndev)
+static void ravb_emac_init_rgeth(struct net_device *ndev)
{
- /* Place holder */
+ struct ravb_private *priv = netdev_priv(ndev);
+
+ /* Receive frame limit set register */
+ ravb_write(ndev, RGETH_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_rgeth(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);
+ ravb_write(ndev, CSR0_TPE | CSR0_RPE, CSR0);
+
+ /* E-MAC interrupt enable register */
+ ravb_write(ndev, ECSIPR_ICDIP, ECSIPR);
+
+ ravb_write(ndev, ravb_read(ndev, CXR31) & ~CXR31_SEL_LINK1, CXR31);
+ ravb_write(ndev, ravb_read(ndev, CXR31) | CXR31_SEL_LINK0, CXR31);
}
-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);
@@ -462,7 +500,7 @@ 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,
@@ -2110,10 +2148,10 @@ 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,
@@ -2133,10 +2171,10 @@ 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,
@@ -2153,10 +2191,10 @@ static const struct ravb_hw_info rgeth_hw_info = {
.rx_ring_format = ravb_rx_ring_format_rgeth,
.alloc_rx_desc = ravb_rgeth_alloc_rx_desc,
.receive = ravb_rgeth_rx,
- .set_rate = ravb_rgeth_set_rate,
+ .set_rate = ravb_set_rate_rgeth,
.set_feature = ravb_set_features_rgeth,
.dmac_init = ravb_dmac_init_rgeth,
- .emac_init = ravb_rgeth_emac_init,
+ .emac_init = ravb_emac_init_rgeth,
.aligned_tx = 1,
.tx_counters = 1,
.no_gptp = 1,
--
2.17.1
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