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6271c8b827
Register each CAN channel of the device as an devlink physical port.
This makes it easier to get device information for a given network
interface (i.e. can2).
Example output:
$ devlink dev
pci/0000:07:00.0
pci/0000:08:00.0
pci/0000:09:00.0
$ devlink port
pci/0000:07:00.0/0: type eth netdev can0 flavour physical port 0 splittable false
pci/0000:07:00.0/1: type eth netdev can1 flavour physical port 1 splittable false
pci/0000:07:00.0/2: type eth netdev can2 flavour physical port 2 splittable false
pci/0000:07:00.0/3: type eth netdev can3 flavour physical port 3 splittable false
pci/0000:08:00.0/0: type eth netdev can4 flavour physical port 0 splittable false
pci/0000:08:00.0/1: type eth netdev can5 flavour physical port 1 splittable false
pci/0000:09:00.0/0: type eth netdev can6 flavour physical port 0 splittable false
pci/0000:09:00.0/1: type eth netdev can7 flavour physical port 1 splittable false
pci/0000:09:00.0/2: type eth netdev can8 flavour physical port 2 splittable false
pci/0000:09:00.0/3: type eth netdev can9 flavour physical port 3 splittable false
$ devlink port show can2
pci/0000:07:00.0/2: type eth netdev can2 flavour physical port 2 splittable false
$ devlink dev info
pci/0000:07:00.0:
driver kvaser_pciefd
versions:
running:
fw 1.3.75
pci/0000:08:00.0:
driver kvaser_pciefd
versions:
running:
fw 2.4.29
pci/0000:09:00.0:
driver kvaser_pciefd
versions:
running:
fw 1.3.72
$ sudo ethtool -i can2
driver: kvaser_pciefd
version: 6.8.0-40-generic
firmware-version: 1.3.75
expansion-rom-version:
bus-info: 0000:07:00.0
supports-statistics: no
supports-test: no
supports-eeprom-access: no
supports-register-dump: no
supports-priv-flags: no
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Link: https://patch.msgid.link/20250725123230.8-10-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
96 lines
2.3 KiB
C
96 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
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/* kvaser_pciefd common definitions and declarations
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*
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* Copyright (C) 2025 KVASER AB, Sweden. All rights reserved.
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*/
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#ifndef _KVASER_PCIEFD_H
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#define _KVASER_PCIEFD_H
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#include <linux/can/dev.h>
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#include <linux/completion.h>
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#include <linux/pci.h>
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#include <linux/spinlock.h>
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#include <linux/timer.h>
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#include <linux/types.h>
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#include <net/devlink.h>
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#define KVASER_PCIEFD_MAX_CAN_CHANNELS 8UL
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#define KVASER_PCIEFD_DMA_COUNT 2U
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#define KVASER_PCIEFD_DMA_SIZE (4U * 1024U)
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#define KVASER_PCIEFD_CAN_TX_MAX_COUNT 17U
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struct kvaser_pciefd;
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struct kvaser_pciefd_address_offset {
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u32 serdes;
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u32 pci_ien;
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u32 pci_irq;
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u32 sysid;
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u32 loopback;
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u32 kcan_srb_fifo;
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u32 kcan_srb;
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u32 kcan_ch0;
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u32 kcan_ch1;
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};
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struct kvaser_pciefd_irq_mask {
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u32 kcan_rx0;
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u32 kcan_tx[KVASER_PCIEFD_MAX_CAN_CHANNELS];
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u32 all;
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};
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struct kvaser_pciefd_dev_ops {
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void (*kvaser_pciefd_write_dma_map)(struct kvaser_pciefd *pcie,
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dma_addr_t addr, int index);
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};
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struct kvaser_pciefd_driver_data {
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const struct kvaser_pciefd_address_offset *address_offset;
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const struct kvaser_pciefd_irq_mask *irq_mask;
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const struct kvaser_pciefd_dev_ops *ops;
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};
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struct kvaser_pciefd_fw_version {
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u8 major;
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u8 minor;
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u16 build;
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};
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struct kvaser_pciefd_can {
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struct can_priv can;
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struct devlink_port devlink_port;
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struct kvaser_pciefd *kv_pcie;
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void __iomem *reg_base;
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struct can_berr_counter bec;
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u32 ioc;
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u8 cmd_seq;
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u8 tx_max_count;
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u8 tx_idx;
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u8 ack_idx;
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int err_rep_cnt;
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unsigned int completed_tx_pkts;
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unsigned int completed_tx_bytes;
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spinlock_t lock; /* Locks sensitive registers (e.g. MODE) */
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struct timer_list bec_poll_timer;
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struct completion start_comp, flush_comp;
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};
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struct kvaser_pciefd {
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struct pci_dev *pci;
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void __iomem *reg_base;
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struct kvaser_pciefd_can *can[KVASER_PCIEFD_MAX_CAN_CHANNELS];
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const struct kvaser_pciefd_driver_data *driver_data;
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void *dma_data[KVASER_PCIEFD_DMA_COUNT];
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u8 nr_channels;
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u32 bus_freq;
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u32 freq;
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u32 freq_to_ticks_div;
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struct kvaser_pciefd_fw_version fw_version;
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};
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extern const struct devlink_ops kvaser_pciefd_devlink_ops;
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int kvaser_pciefd_devlink_port_register(struct kvaser_pciefd_can *can);
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void kvaser_pciefd_devlink_port_unregister(struct kvaser_pciefd_can *can);
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#endif /* _KVASER_PCIEFD_H */
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