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Date:   Thu, 25 Apr 2019 01:17:15 +0800
From:   Weifeng Voon <weifeng.voon@...el.com>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Ong Boon Leong <boon.leong.ong@...el.com>,
        Kweh Hock Leong <hock.leong.kweh@...el.com>,
        Weifeng Voon <weifeng.voon@...el.com>
Subject: [PATCH 1/7] net: stmmac: add EHL SGMII 1Gbps platform data and PCI ID

Added EHL SGMII 1Gbps PCI ID. Different MII and speed will have
different PCI ID.
For EHL, default TX and RX FIFO size is set to 32KB. This is
because the FIFO size advertised in the HW features is not the
same as the HW implementation. The TX FIFO is shared among all
all the TX queues and the RX FIFO is also shared among all the
RX queues.

Signed-off-by: Weifeng Voon <weifeng.voon@...el.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c | 103 +++++++++++++++++++++++
 1 file changed, 103 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
index d819e8e..b454a97 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
@@ -118,6 +118,107 @@ static int stmmac_default_data(struct pci_dev *pdev,
 	.setup = stmmac_default_data,
 };
 
+static int ehl_common_data(struct pci_dev *pdev,
+			   struct plat_stmmacenet_data *plat)
+{
+	int i;
+
+	plat->bus_id = 1;
+	plat->phy_addr = 0;
+	plat->clk_csr = 5;
+	plat->has_gmac = 0;
+	plat->has_gmac4 = 1;
+	plat->force_sf_dma_mode = 0;
+	plat->tso_en = 1;
+
+	plat->rx_queues_to_use = 8;
+	plat->tx_queues_to_use = 8;
+	plat->rx_sched_algorithm = MTL_RX_ALGORITHM_SP;
+
+	for (i = 0; i < plat->rx_queues_to_use; i++) {
+		plat->rx_queues_cfg[i].mode_to_use = MTL_QUEUE_DCB;
+		plat->rx_queues_cfg[i].chan = i;
+
+		/* Disable Priority config by default */
+		plat->tx_queues_cfg[i].use_prio = false;
+
+		/* Disable RX queues routing by default */
+		plat->rx_queues_cfg[i].pkt_route = 0x0;
+	}
+
+	for (i = 0; i < plat->tx_queues_to_use; i++) {
+		plat->tx_queues_cfg[i].mode_to_use = MTL_QUEUE_DCB;
+
+		/* Disable Priority config by default */
+		plat->tx_queues_cfg[i].use_prio = false;
+	}
+
+	plat->tx_sched_algorithm = MTL_TX_ALGORITHM_WRR;
+	plat->tx_queues_cfg[0].weight = 0x09;
+	plat->tx_queues_cfg[1].weight = 0x0A;
+	plat->tx_queues_cfg[2].weight = 0x0B;
+	plat->tx_queues_cfg[3].weight = 0x0C;
+	plat->tx_queues_cfg[4].weight = 0x0D;
+	plat->tx_queues_cfg[5].weight = 0x0E;
+	plat->tx_queues_cfg[6].weight = 0x0F;
+	plat->tx_queues_cfg[7].weight = 0x10;
+
+	plat->mdio_bus_data->phy_reset = NULL;
+	plat->mdio_bus_data->phy_mask = 0;
+
+	plat->dma_cfg->pbl = 32;
+	plat->dma_cfg->pblx8 = true;
+	plat->dma_cfg->fixed_burst = 0;
+	plat->dma_cfg->mixed_burst = 0;
+	plat->dma_cfg->aal = 0;
+
+	plat->axi = devm_kzalloc(&pdev->dev, sizeof(*plat->axi),
+				 GFP_KERNEL);
+	if (!plat->axi)
+		return -ENOMEM;
+	plat->axi->axi_lpi_en = 0;
+	plat->axi->axi_xit_frm = 0;
+	plat->axi->axi_wr_osr_lmt = 0;
+	plat->axi->axi_rd_osr_lmt = 2;
+	plat->axi->axi_blen[0] = 4;
+	plat->axi->axi_blen[1] = 8;
+	plat->axi->axi_blen[2] = 16;
+
+	/* Set default value for multicast hash bins */
+	plat->multicast_filter_bins = HASH_TABLE_SIZE;
+
+	/* Set default value for unicast filter entries */
+	plat->unicast_filter_entries = 1;
+
+	/* Set the maxmtu to a default of JUMBO_LEN */
+	plat->maxmtu = JUMBO_LEN;
+
+	plat->tx_fifo_size = 32768;
+	plat->rx_fifo_size = 32768;
+
+	return 0;
+}
+
+static int ehl_sgmii1g_data(struct pci_dev *pdev,
+			    struct plat_stmmacenet_data *plat)
+{
+	int ret;
+
+	/* Set common default data first */
+	ret = ehl_common_data(pdev, plat);
+
+	if (ret)
+		return ret;
+
+	plat->interface = PHY_INTERFACE_MODE_SGMII;
+
+	return 0;
+}
+
+static struct stmmac_pci_info ehl_sgmii1g_pci_info = {
+	.setup = ehl_sgmii1g_data,
+};
+
 static const struct stmmac_pci_func_data galileo_stmmac_func_data[] = {
 	{
 		.func = 6,
@@ -355,6 +456,7 @@ static int __maybe_unused stmmac_pci_resume(struct device *dev)
 
 #define STMMAC_QUARK_ID  0x0937
 #define STMMAC_DEVICE_ID 0x1108
+#define STMMAC_EHL_SGMII1G_ID   0x4b31
 
 #define STMMAC_DEVICE(vendor_id, dev_id, info)	{	\
 	PCI_VDEVICE(vendor_id, dev_id),			\
@@ -365,6 +467,7 @@ static int __maybe_unused stmmac_pci_resume(struct device *dev)
 	STMMAC_DEVICE(STMMAC, STMMAC_DEVICE_ID, stmmac_pci_info),
 	STMMAC_DEVICE(STMICRO, PCI_DEVICE_ID_STMICRO_MAC, stmmac_pci_info),
 	STMMAC_DEVICE(INTEL, STMMAC_QUARK_ID, quark_pci_info),
+	STMMAC_DEVICE(INTEL, STMMAC_EHL_SGMII1G_ID, ehl_sgmii1g_pci_info),
 	{}
 };
 
-- 
1.9.1

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