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Message-Id: <20250812093937.882045-3-dong100@mucse.com>
Date: Tue, 12 Aug 2025 17:39:34 +0800
From: Dong Yibo <dong100@...se.com>
To: andrew+netdev@...n.ch,
davem@...emloft.net,
edumazet@...gle.com,
kuba@...nel.org,
pabeni@...hat.com,
horms@...nel.org,
corbet@....net,
gur.stavi@...wei.com,
maddy@...ux.ibm.com,
mpe@...erman.id.au,
danishanwar@...com,
lee@...ger.us,
gongfan1@...wei.com,
lorenzo@...nel.org,
geert+renesas@...der.be,
Parthiban.Veerasooran@...rochip.com,
lukas.bulwahn@...hat.com,
alexanderduyck@...com,
richardcochran@...il.com
Cc: netdev@...r.kernel.org,
linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org,
dong100@...se.com
Subject: [PATCH v3 2/5] net: rnpgbe: Add n500/n210 chip support
Initialize n500/n210 chip bar resource map and
dma, eth, mbx ... info for future use.
Signed-off-by: Dong Yibo <dong100@...se.com>
---
drivers/net/ethernet/mucse/rnpgbe/Makefile | 3 +-
drivers/net/ethernet/mucse/rnpgbe/rnpgbe.h | 60 +++++++++
.../net/ethernet/mucse/rnpgbe/rnpgbe_chip.c | 88 ++++++++++++++
drivers/net/ethernet/mucse/rnpgbe/rnpgbe_hw.h | 12 ++
.../net/ethernet/mucse/rnpgbe/rnpgbe_main.c | 115 ++++++++++++++++++
5 files changed, 277 insertions(+), 1 deletion(-)
create mode 100644 drivers/net/ethernet/mucse/rnpgbe/rnpgbe_chip.c
create mode 100644 drivers/net/ethernet/mucse/rnpgbe/rnpgbe_hw.h
diff --git a/drivers/net/ethernet/mucse/rnpgbe/Makefile b/drivers/net/ethernet/mucse/rnpgbe/Makefile
index 9df536f0d04c..42c359f459d9 100644
--- a/drivers/net/ethernet/mucse/rnpgbe/Makefile
+++ b/drivers/net/ethernet/mucse/rnpgbe/Makefile
@@ -5,4 +5,5 @@
#
obj-$(CONFIG_MGBE) += rnpgbe.o
-rnpgbe-objs := rnpgbe_main.o
+rnpgbe-objs := rnpgbe_main.o\
+ rnpgbe_chip.o
diff --git a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe.h b/drivers/net/ethernet/mucse/rnpgbe/rnpgbe.h
index 23c84454e7c7..0dd3d3cb2a4d 100644
--- a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe.h
+++ b/drivers/net/ethernet/mucse/rnpgbe/rnpgbe.h
@@ -4,18 +4,78 @@
#ifndef _RNPGBE_H
#define _RNPGBE_H
+#include <linux/types.h>
+
+extern const struct rnpgbe_info rnpgbe_n500_info;
+extern const struct rnpgbe_info rnpgbe_n210_info;
+extern const struct rnpgbe_info rnpgbe_n210L_info;
+
enum rnpgbe_boards {
board_n500,
board_n210,
board_n210L,
};
+enum rnpgbe_hw_type {
+ rnpgbe_hw_n500 = 0,
+ rnpgbe_hw_n210,
+ rnpgbe_hw_n210L,
+ rnpgbe_hw_unknow
+};
+
+struct mucse_dma_info {
+ void __iomem *dma_base_addr;
+ void __iomem *dma_ring_addr;
+ void *back;
+ u32 dma_version;
+};
+
+struct mucse_eth_info {
+ void __iomem *eth_base_addr;
+ void *back;
+};
+
+struct mucse_mac_info {
+ void __iomem *mac_addr;
+ void *back;
+};
+
+struct mucse_mbx_info {
+ /* fw <--> pf mbx */
+ u32 fw_pf_shm_base;
+ u32 pf2fw_mbox_ctrl;
+ u32 pf2fw_mbox_mask;
+ u32 fw_pf_mbox_mask;
+ u32 fw2pf_mbox_vec;
+};
+
+struct mucse_hw {
+ void *back;
+ void __iomem *hw_addr;
+ void __iomem *ring_msix_base;
+ struct pci_dev *pdev;
+ enum rnpgbe_hw_type hw_type;
+ struct mucse_dma_info dma;
+ struct mucse_eth_info eth;
+ struct mucse_mac_info mac;
+ struct mucse_mbx_info mbx;
+ u32 driver_version;
+ u16 usecstocount;
+};
+
struct mucse {
struct net_device *netdev;
struct pci_dev *pdev;
+ struct mucse_hw hw;
u16 bd_number;
};
+struct rnpgbe_info {
+ int total_queue_pair_cnts;
+ enum rnpgbe_hw_type hw_type;
+ void (*init)(struct mucse_hw *hw);
+};
+
/* Device IDs */
#define PCI_VENDOR_ID_MUCSE 0x8848
#define PCI_DEVICE_ID_N500_QUAD_PORT 0x8308
diff --git a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_chip.c b/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_chip.c
new file mode 100644
index 000000000000..20ec67c9391e
--- /dev/null
+++ b/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_chip.c
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright(c) 2020 - 2025 Mucse Corporation. */
+
+#include "rnpgbe.h"
+#include "rnpgbe_hw.h"
+
+/**
+ * rnpgbe_init_common - Setup common attribute
+ * @hw: hw information structure
+ **/
+static void rnpgbe_init_common(struct mucse_hw *hw)
+{
+ struct mucse_dma_info *dma = &hw->dma;
+ struct mucse_eth_info *eth = &hw->eth;
+ struct mucse_mac_info *mac = &hw->mac;
+
+ dma->dma_base_addr = hw->hw_addr;
+ dma->dma_ring_addr = hw->hw_addr + RNPGBE_RING_BASE;
+ dma->back = hw;
+
+ eth->eth_base_addr = hw->hw_addr + RNPGBE_ETH_BASE;
+ eth->back = hw;
+
+ mac->mac_addr = hw->hw_addr + RNPGBE_MAC_BASE;
+ mac->back = hw;
+}
+
+/**
+ * rnpgbe_init_n500 - Setup n500 hw info
+ * @hw: hw information structure
+ *
+ * rnpgbe_init_n500 initializes all private
+ * structure, such as dma, eth, mac and mbx base on
+ * hw->addr for n500
+ **/
+static void rnpgbe_init_n500(struct mucse_hw *hw)
+{
+ struct mucse_mbx_info *mbx = &hw->mbx;
+
+ rnpgbe_init_common(hw);
+
+ mbx->fw2pf_mbox_vec = 0x28b00;
+ mbx->fw_pf_shm_base = 0x2d000;
+ mbx->pf2fw_mbox_ctrl = 0x2e000;
+ mbx->fw_pf_mbox_mask = 0x2e200;
+ hw->ring_msix_base = hw->hw_addr + 0x28700;
+ hw->usecstocount = 125;
+}
+
+/**
+ * rnpgbe_init_n210 - Setup n210 hw info
+ * @hw: hw information structure
+ *
+ * rnpgbe_init_n210 initializes all private
+ * structure, such as dma, eth, mac and mbx base on
+ * hw->addr for n210
+ **/
+static void rnpgbe_init_n210(struct mucse_hw *hw)
+{
+ struct mucse_mbx_info *mbx = &hw->mbx;
+
+ rnpgbe_init_common(hw);
+
+ mbx->fw2pf_mbox_vec = 0x29400;
+ mbx->fw_pf_shm_base = 0x2d900;
+ mbx->pf2fw_mbox_ctrl = 0x2e900;
+ mbx->fw_pf_mbox_mask = 0x2eb00;
+ hw->ring_msix_base = hw->hw_addr + 0x29000;
+ hw->usecstocount = 62;
+}
+
+const struct rnpgbe_info rnpgbe_n500_info = {
+ .total_queue_pair_cnts = RNPGBE_MAX_QUEUES,
+ .hw_type = rnpgbe_hw_n500,
+ .init = &rnpgbe_init_n500,
+};
+
+const struct rnpgbe_info rnpgbe_n210_info = {
+ .total_queue_pair_cnts = RNPGBE_MAX_QUEUES,
+ .hw_type = rnpgbe_hw_n210,
+ .init = &rnpgbe_init_n210,
+};
+
+const struct rnpgbe_info rnpgbe_n210L_info = {
+ .total_queue_pair_cnts = RNPGBE_MAX_QUEUES,
+ .hw_type = rnpgbe_hw_n210L,
+ .init = &rnpgbe_init_n210,
+};
diff --git a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_hw.h b/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_hw.h
new file mode 100644
index 000000000000..fc57258537cf
--- /dev/null
+++ b/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_hw.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright(c) 2020 - 2025 Mucse Corporation. */
+
+#ifndef _RNPGBE_HW_H
+#define _RNPGBE_HW_H
+
+#define RNPGBE_RING_BASE 0x1000
+#define RNPGBE_MAC_BASE 0x20000
+#define RNPGBE_ETH_BASE 0x10000
+/**************** CHIP Resource ****************************/
+#define RNPGBE_MAX_QUEUES 8
+#endif /* _RNPGBE_HW_H */
diff --git a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_main.c b/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_main.c
index c2e099bd2639..c151995309f8 100644
--- a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_main.c
+++ b/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_main.c
@@ -4,10 +4,17 @@
#include <linux/types.h>
#include <linux/module.h>
#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
#include "rnpgbe.h"
static const char rnpgbe_driver_name[] = "rnpgbe";
+static const struct rnpgbe_info *rnpgbe_info_tbl[] = {
+ [board_n500] = &rnpgbe_n500_info,
+ [board_n210] = &rnpgbe_n210_info,
+ [board_n210L] = &rnpgbe_n210L_info,
+};
/* rnpgbe_pci_tbl - PCI Device ID Table
*
@@ -27,6 +34,85 @@ static struct pci_device_id rnpgbe_pci_tbl[] = {
{0, },
};
+/**
+ * rnpgbe_add_adapter - Add netdev for this pci_dev
+ * @pdev: PCI device information structure
+ * @info: chip info structure
+ *
+ * rnpgbe_add_adapter initializes a netdev for this pci_dev
+ * structure. Initializes Bar map, private structure, and a
+ * hardware reset occur.
+ *
+ * @return: 0 on success, negative on failure
+ **/
+static int rnpgbe_add_adapter(struct pci_dev *pdev,
+ const struct rnpgbe_info *info)
+{
+ struct net_device *netdev;
+ void __iomem *hw_addr;
+ static int bd_number;
+ struct mucse *mucse;
+ struct mucse_hw *hw;
+ u32 dma_version = 0;
+ u32 queues;
+ int err;
+
+ queues = info->total_queue_pair_cnts;
+ netdev = alloc_etherdev_mq(sizeof(struct mucse), queues);
+ if (!netdev)
+ return -ENOMEM;
+
+ SET_NETDEV_DEV(netdev, &pdev->dev);
+ mucse = netdev_priv(netdev);
+ mucse->netdev = netdev;
+ mucse->pdev = pdev;
+ mucse->bd_number = bd_number++;
+ pci_set_drvdata(pdev, mucse);
+
+ hw = &mucse->hw;
+ hw->back = mucse;
+ hw->hw_type = info->hw_type;
+ hw->pdev = pdev;
+
+ switch (hw->hw_type) {
+ case rnpgbe_hw_n500:
+ hw_addr = devm_ioremap(&pdev->dev,
+ pci_resource_start(pdev, 2),
+ pci_resource_len(pdev, 2));
+ if (!hw_addr) {
+ err = -EIO;
+ goto err_free_net;
+ }
+
+ dma_version = readl(hw_addr);
+ break;
+ case rnpgbe_hw_n210:
+ case rnpgbe_hw_n210L:
+ hw_addr = devm_ioremap(&pdev->dev,
+ pci_resource_start(pdev, 2),
+ pci_resource_len(pdev, 2));
+ if (!hw_addr) {
+ err = -EIO;
+ goto err_free_net;
+ }
+
+ dma_version = readl(hw_addr);
+ break;
+ default:
+ err = -EIO;
+ goto err_free_net;
+ }
+ hw->hw_addr = hw_addr;
+ hw->dma.dma_version = dma_version;
+ hw->driver_version = 0x0002040f;
+ info->init(hw);
+ return 0;
+
+err_free_net:
+ free_netdev(netdev);
+ return err;
+}
+
/**
* rnpgbe_probe - Device initialization routine
* @pdev: PCI device information struct
@@ -39,6 +125,7 @@ static struct pci_device_id rnpgbe_pci_tbl[] = {
**/
static int rnpgbe_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
+ const struct rnpgbe_info *info = rnpgbe_info_tbl[id->driver_data];
int err;
err = pci_enable_device_mem(pdev);
@@ -61,14 +148,37 @@ static int rnpgbe_probe(struct pci_dev *pdev, const struct pci_device_id *id)
pci_set_master(pdev);
pci_save_state(pdev);
+ err = rnpgbe_add_adapter(pdev, info);
+ if (err)
+ goto err_regions;
return 0;
+err_regions:
+ pci_release_mem_regions(pdev);
err_dma:
err_pci_req:
pci_disable_device(pdev);
return err;
}
+/**
+ * rnpgbe_rm_adapter - Remove netdev for this mucse structure
+ * @pdev: PCI device information struct
+ *
+ * rnpgbe_rm_adapter remove a netdev for this mucse structure
+ **/
+static void rnpgbe_rm_adapter(struct pci_dev *pdev)
+{
+ struct mucse *mucse = pci_get_drvdata(pdev);
+ struct net_device *netdev;
+
+ if (!mucse)
+ return;
+ netdev = mucse->netdev;
+ mucse->netdev = NULL;
+ free_netdev(netdev);
+}
+
/**
* rnpgbe_remove - Device removal routine
* @pdev: PCI device information struct
@@ -80,6 +190,7 @@ static int rnpgbe_probe(struct pci_dev *pdev, const struct pci_device_id *id)
**/
static void rnpgbe_remove(struct pci_dev *pdev)
{
+ rnpgbe_rm_adapter(pdev);
pci_release_mem_regions(pdev);
pci_disable_device(pdev);
}
@@ -92,7 +203,11 @@ static void rnpgbe_remove(struct pci_dev *pdev)
static void rnpgbe_dev_shutdown(struct pci_dev *pdev,
bool *enable_wake)
{
+ struct mucse *mucse = pci_get_drvdata(pdev);
+ struct net_device *netdev = mucse->netdev;
+
*enable_wake = false;
+ netif_device_detach(netdev);
pci_disable_device(pdev);
}
--
2.25.1
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