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Message-ID: <d77189ec-b1ee-4718-9212-c7208da40814@ti.com>
Date: Tue, 12 Aug 2025 21:55:11 +0530
From: "Anwar, Md Danish" <a0501179@...com>
To: Dong Yibo <dong100@...se.com>, <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>
Subject: Re: [PATCH v3 2/5] net: rnpgbe: Add n500/n210 chip support
On 8/12/2025 3:09 PM, Dong Yibo wrote:
> 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
> +};
The enum value name should be "rnpgbe_hw_unknown" not "rnpgbe_hw_unknow"
(missing 'n').
> +
> +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;
> +}
I don't see pf2fw_mbox_mask getting initialized anywhere. Is that not
needed?
> +
> +const struct rnpgbe_info rnpgbe_n500_info = {
--
Thanks and Regards,
Md Danish Anwar
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