diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/can/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/net/can/Makefile | 2 | ||||
| -rw-r--r-- | drivers/net/can/kvaser_pciefd/Makefile | 3 | ||||
| -rw-r--r-- | drivers/net/can/kvaser_pciefd/kvaser_pciefd.h | 96 | ||||
| -rw-r--r-- | drivers/net/can/kvaser_pciefd/kvaser_pciefd_core.c (renamed from drivers/net/can/kvaser_pciefd.c) | 144 | ||||
| -rw-r--r-- | drivers/net/can/kvaser_pciefd/kvaser_pciefd_devlink.c | 60 |
6 files changed, 232 insertions, 74 deletions
diff --git a/drivers/net/can/Kconfig b/drivers/net/can/Kconfig index d58fab0161b3..d43d56694667 100644 --- a/drivers/net/can/Kconfig +++ b/drivers/net/can/Kconfig @@ -154,6 +154,7 @@ config CAN_JANZ_ICAN3 config CAN_KVASER_PCIEFD depends on PCI tristate "Kvaser PCIe FD cards" + select NET_DEVLINK help This is a driver for the Kvaser PCI Express CAN FD family. diff --git a/drivers/net/can/Makefile b/drivers/net/can/Makefile index a71db2cfe990..56138d8ddfd2 100644 --- a/drivers/net/can/Makefile +++ b/drivers/net/can/Makefile @@ -25,7 +25,7 @@ obj-$(CONFIG_CAN_FLEXCAN) += flexcan/ obj-$(CONFIG_CAN_GRCAN) += grcan.o obj-$(CONFIG_CAN_IFI_CANFD) += ifi_canfd/ obj-$(CONFIG_CAN_JANZ_ICAN3) += janz-ican3.o -obj-$(CONFIG_CAN_KVASER_PCIEFD) += kvaser_pciefd.o +obj-$(CONFIG_CAN_KVASER_PCIEFD) += kvaser_pciefd/ obj-$(CONFIG_CAN_MSCAN) += mscan/ obj-$(CONFIG_CAN_M_CAN) += m_can/ obj-$(CONFIG_CAN_PEAK_PCIEFD) += peak_canfd/ diff --git a/drivers/net/can/kvaser_pciefd/Makefile b/drivers/net/can/kvaser_pciefd/Makefile new file mode 100644 index 000000000000..8c5b8cdc6b5f --- /dev/null +++ b/drivers/net/can/kvaser_pciefd/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_CAN_KVASER_PCIEFD) += kvaser_pciefd.o +kvaser_pciefd-y = kvaser_pciefd_core.o kvaser_pciefd_devlink.o diff --git a/drivers/net/can/kvaser_pciefd/kvaser_pciefd.h b/drivers/net/can/kvaser_pciefd/kvaser_pciefd.h new file mode 100644 index 000000000000..08c9ddc1ee85 --- /dev/null +++ b/drivers/net/can/kvaser_pciefd/kvaser_pciefd.h @@ -0,0 +1,96 @@ +/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */ +/* kvaser_pciefd common definitions and declarations + * + * Copyright (C) 2025 KVASER AB, Sweden. All rights reserved. + */ + +#ifndef _KVASER_PCIEFD_H +#define _KVASER_PCIEFD_H + +#include <linux/can/dev.h> +#include <linux/completion.h> +#include <linux/pci.h> +#include <linux/spinlock.h> +#include <linux/timer.h> +#include <linux/types.h> +#include <net/devlink.h> + +#define KVASER_PCIEFD_MAX_CAN_CHANNELS 8UL +#define KVASER_PCIEFD_DMA_COUNT 2U +#define KVASER_PCIEFD_DMA_SIZE (4U * 1024U) +#define KVASER_PCIEFD_CAN_TX_MAX_COUNT 17U + +struct kvaser_pciefd; + +struct kvaser_pciefd_address_offset { + u32 serdes; + u32 pci_ien; + u32 pci_irq; + u32 sysid; + u32 loopback; + u32 kcan_srb_fifo; + u32 kcan_srb; + u32 kcan_ch0; + u32 kcan_ch1; +}; + +struct kvaser_pciefd_irq_mask { + u32 kcan_rx0; + u32 kcan_tx[KVASER_PCIEFD_MAX_CAN_CHANNELS]; + u32 all; +}; + +struct kvaser_pciefd_dev_ops { + void (*kvaser_pciefd_write_dma_map)(struct kvaser_pciefd *pcie, + dma_addr_t addr, int index); +}; + +struct kvaser_pciefd_driver_data { + const struct kvaser_pciefd_address_offset *address_offset; + const struct kvaser_pciefd_irq_mask *irq_mask; + const struct kvaser_pciefd_dev_ops *ops; +}; + +struct kvaser_pciefd_fw_version { + u8 major; + u8 minor; + u16 build; +}; + +struct kvaser_pciefd_can { + struct can_priv can; + struct devlink_port devlink_port; + struct kvaser_pciefd *kv_pcie; + void __iomem *reg_base; + struct can_berr_counter bec; + u32 ioc; + u8 cmd_seq; + u8 tx_max_count; + u8 tx_idx; + u8 ack_idx; + int err_rep_cnt; + unsigned int completed_tx_pkts; + unsigned int completed_tx_bytes; + spinlock_t lock; /* Locks sensitive registers (e.g. MODE) */ + struct timer_list bec_poll_timer; + struct completion start_comp, flush_comp; +}; + +struct kvaser_pciefd { + struct pci_dev *pci; + void __iomem *reg_base; + struct kvaser_pciefd_can *can[KVASER_PCIEFD_MAX_CAN_CHANNELS]; + const struct kvaser_pciefd_driver_data *driver_data; + void *dma_data[KVASER_PCIEFD_DMA_COUNT]; + u8 nr_channels; + u32 bus_freq; + u32 freq; + u32 freq_to_ticks_div; + struct kvaser_pciefd_fw_version fw_version; +}; + +extern const struct devlink_ops kvaser_pciefd_devlink_ops; + +int kvaser_pciefd_devlink_port_register(struct kvaser_pciefd_can *can); +void kvaser_pciefd_devlink_port_unregister(struct kvaser_pciefd_can *can); +#endif /* _KVASER_PCIEFD_H */ diff --git a/drivers/net/can/kvaser_pciefd.c b/drivers/net/can/kvaser_pciefd/kvaser_pciefd_core.c index 09510663988c..0880023611be 100644 --- a/drivers/net/can/kvaser_pciefd.c +++ b/drivers/net/can/kvaser_pciefd/kvaser_pciefd_core.c @@ -5,6 +5,8 @@ * - PEAK linux canfd driver */ +#include "kvaser_pciefd.h" + #include <linux/bitfield.h> #include <linux/can/dev.h> #include <linux/device.h> @@ -27,10 +29,6 @@ MODULE_DESCRIPTION("CAN driver for Kvaser CAN/PCIe devices"); #define KVASER_PCIEFD_WAIT_TIMEOUT msecs_to_jiffies(1000) #define KVASER_PCIEFD_BEC_POLL_FREQ (jiffies + msecs_to_jiffies(200)) #define KVASER_PCIEFD_MAX_ERR_REP 256U -#define KVASER_PCIEFD_CAN_TX_MAX_COUNT 17U -#define KVASER_PCIEFD_MAX_CAN_CHANNELS 8UL -#define KVASER_PCIEFD_DMA_COUNT 2U -#define KVASER_PCIEFD_DMA_SIZE (4U * 1024U) #define KVASER_PCIEFD_VENDOR 0x1a07 @@ -66,6 +64,7 @@ MODULE_DESCRIPTION("CAN driver for Kvaser CAN/PCIe devices"); #define KVASER_PCIEFD_KCAN_FIFO_LAST_REG 0x180 #define KVASER_PCIEFD_KCAN_CTRL_REG 0x2c0 #define KVASER_PCIEFD_KCAN_CMD_REG 0x400 +#define KVASER_PCIEFD_KCAN_IOC_REG 0x404 #define KVASER_PCIEFD_KCAN_IEN_REG 0x408 #define KVASER_PCIEFD_KCAN_IRQ_REG 0x410 #define KVASER_PCIEFD_KCAN_TX_NR_PACKETS_REG 0x414 @@ -136,6 +135,9 @@ MODULE_DESCRIPTION("CAN driver for Kvaser CAN/PCIe devices"); /* Request status packet */ #define KVASER_PCIEFD_KCAN_CMD_SRQ BIT(0) +/* Control CAN LED, active low */ +#define KVASER_PCIEFD_KCAN_IOC_LED BIT(0) + /* Transmitter unaligned */ #define KVASER_PCIEFD_KCAN_IRQ_TAL BIT(17) /* Tx FIFO empty */ @@ -292,35 +294,6 @@ static void kvaser_pciefd_write_dma_map_sf2(struct kvaser_pciefd *pcie, static void kvaser_pciefd_write_dma_map_xilinx(struct kvaser_pciefd *pcie, dma_addr_t addr, int index); -struct kvaser_pciefd_address_offset { - u32 serdes; - u32 pci_ien; - u32 pci_irq; - u32 sysid; - u32 loopback; - u32 kcan_srb_fifo; - u32 kcan_srb; - u32 kcan_ch0; - u32 kcan_ch1; -}; - -struct kvaser_pciefd_dev_ops { - void (*kvaser_pciefd_write_dma_map)(struct kvaser_pciefd *pcie, - dma_addr_t addr, int index); -}; - -struct kvaser_pciefd_irq_mask { - u32 kcan_rx0; - u32 kcan_tx[KVASER_PCIEFD_MAX_CAN_CHANNELS]; - u32 all; -}; - -struct kvaser_pciefd_driver_data { - const struct kvaser_pciefd_address_offset *address_offset; - const struct kvaser_pciefd_irq_mask *irq_mask; - const struct kvaser_pciefd_dev_ops *ops; -}; - static const struct kvaser_pciefd_address_offset kvaser_pciefd_altera_address_offset = { .serdes = 0x1000, .pci_ien = 0x50, @@ -405,35 +378,6 @@ static const struct kvaser_pciefd_driver_data kvaser_pciefd_xilinx_driver_data = .ops = &kvaser_pciefd_xilinx_dev_ops, }; -struct kvaser_pciefd_can { - struct can_priv can; - struct kvaser_pciefd *kv_pcie; - void __iomem *reg_base; - struct can_berr_counter bec; - u8 cmd_seq; - u8 tx_max_count; - u8 tx_idx; - u8 ack_idx; - int err_rep_cnt; - unsigned int completed_tx_pkts; - unsigned int completed_tx_bytes; - spinlock_t lock; /* Locks sensitive registers (e.g. MODE) */ - struct timer_list bec_poll_timer; - struct completion start_comp, flush_comp; -}; - -struct kvaser_pciefd { - struct pci_dev *pci; - void __iomem *reg_base; - struct kvaser_pciefd_can *can[KVASER_PCIEFD_MAX_CAN_CHANNELS]; - const struct kvaser_pciefd_driver_data *driver_data; - void *dma_data[KVASER_PCIEFD_DMA_COUNT]; - u8 nr_channels; - u32 bus_freq; - u32 freq; - u32 freq_to_ticks_div; -}; - struct kvaser_pciefd_rx_packet { u32 header[2]; u64 timestamp; @@ -528,6 +472,16 @@ static inline void kvaser_pciefd_abort_flush_reset(struct kvaser_pciefd_can *can kvaser_pciefd_send_kcan_cmd(can, KVASER_PCIEFD_KCAN_CMD_AT); } +static inline void kvaser_pciefd_set_led(struct kvaser_pciefd_can *can, bool on) +{ + if (on) + can->ioc &= ~KVASER_PCIEFD_KCAN_IOC_LED; + else + can->ioc |= KVASER_PCIEFD_KCAN_IOC_LED; + + iowrite32(can->ioc, can->reg_base + KVASER_PCIEFD_KCAN_IOC_REG); +} + static void kvaser_pciefd_enable_err_gen(struct kvaser_pciefd_can *can) { u32 mode; @@ -953,8 +907,32 @@ static const struct net_device_ops kvaser_pciefd_netdev_ops = { .ndo_change_mtu = can_change_mtu, }; +static int kvaser_pciefd_set_phys_id(struct net_device *netdev, + enum ethtool_phys_id_state state) +{ + struct kvaser_pciefd_can *can = netdev_priv(netdev); + + switch (state) { + case ETHTOOL_ID_ACTIVE: + return 3; /* 3 On/Off cycles per second */ + + case ETHTOOL_ID_ON: + kvaser_pciefd_set_led(can, true); + return 0; + + case ETHTOOL_ID_OFF: + case ETHTOOL_ID_INACTIVE: + kvaser_pciefd_set_led(can, false); + return 0; + + default: + return -EINVAL; + } +} + static const struct ethtool_ops kvaser_pciefd_ethtool_ops = { .get_ts_info = can_ethtool_op_get_ts_info_hwts, + .set_phys_id = kvaser_pciefd_set_phys_id, }; static int kvaser_pciefd_setup_can_ctrls(struct kvaser_pciefd *pcie) @@ -965,6 +943,7 @@ static int kvaser_pciefd_setup_can_ctrls(struct kvaser_pciefd *pcie) struct net_device *netdev; struct kvaser_pciefd_can *can; u32 status, tx_nr_packets_max; + int ret; netdev = alloc_candev(sizeof(struct kvaser_pciefd_can), roundup_pow_of_two(KVASER_PCIEFD_CAN_TX_MAX_COUNT)); @@ -982,6 +961,7 @@ static int kvaser_pciefd_setup_can_ctrls(struct kvaser_pciefd *pcie) can->completed_tx_bytes = 0; can->bec.txerr = 0; can->bec.rxerr = 0; + can->can.dev->dev_port = i; init_completion(&can->start_comp); init_completion(&can->flush_comp); @@ -990,6 +970,9 @@ static int kvaser_pciefd_setup_can_ctrls(struct kvaser_pciefd *pcie) /* Disable Bus load reporting */ iowrite32(0, can->reg_base + KVASER_PCIEFD_KCAN_BUS_LOAD_REG); + can->ioc = ioread32(can->reg_base + KVASER_PCIEFD_KCAN_IOC_REG); + kvaser_pciefd_set_led(can, false); + tx_nr_packets_max = FIELD_GET(KVASER_PCIEFD_KCAN_TX_NR_PACKETS_MAX_MASK, ioread32(can->reg_base + KVASER_PCIEFD_KCAN_TX_NR_PACKETS_REG)); @@ -1031,6 +1014,11 @@ static int kvaser_pciefd_setup_can_ctrls(struct kvaser_pciefd *pcie) pcie->can[i] = can; kvaser_pciefd_pwm_start(can); + ret = kvaser_pciefd_devlink_port_register(can); + if (ret) { + dev_err(&pcie->pci->dev, "Failed to register devlink port\n"); + return ret; + } } return 0; @@ -1163,14 +1151,12 @@ static int kvaser_pciefd_setup_board(struct kvaser_pciefd *pcie) u32 version, srb_status, build; version = ioread32(KVASER_PCIEFD_SYSID_ADDR(pcie) + KVASER_PCIEFD_SYSID_VERSION_REG); + build = ioread32(KVASER_PCIEFD_SYSID_ADDR(pcie) + KVASER_PCIEFD_SYSID_BUILD_REG); pcie->nr_channels = min(KVASER_PCIEFD_MAX_CAN_CHANNELS, FIELD_GET(KVASER_PCIEFD_SYSID_VERSION_NR_CHAN_MASK, version)); - - build = ioread32(KVASER_PCIEFD_SYSID_ADDR(pcie) + KVASER_PCIEFD_SYSID_BUILD_REG); - dev_dbg(&pcie->pci->dev, "Version %lu.%lu.%lu\n", - FIELD_GET(KVASER_PCIEFD_SYSID_VERSION_MAJOR_MASK, version), - FIELD_GET(KVASER_PCIEFD_SYSID_VERSION_MINOR_MASK, version), - FIELD_GET(KVASER_PCIEFD_SYSID_BUILD_SEQ_MASK, build)); + pcie->fw_version.major = FIELD_GET(KVASER_PCIEFD_SYSID_VERSION_MAJOR_MASK, version); + pcie->fw_version.minor = FIELD_GET(KVASER_PCIEFD_SYSID_VERSION_MINOR_MASK, version); + pcie->fw_version.build = FIELD_GET(KVASER_PCIEFD_SYSID_BUILD_SEQ_MASK, build); srb_status = ioread32(KVASER_PCIEFD_SRB_ADDR(pcie) + KVASER_PCIEFD_SRB_STAT_REG); if (!(srb_status & KVASER_PCIEFD_SRB_STAT_DMA)) { @@ -1752,6 +1738,7 @@ static void kvaser_pciefd_teardown_can_ctrls(struct kvaser_pciefd *pcie) if (can) { iowrite32(0, can->reg_base + KVASER_PCIEFD_KCAN_IEN_REG); kvaser_pciefd_pwm_stop(can); + kvaser_pciefd_devlink_port_unregister(can); free_candev(can->can.dev); } } @@ -1771,13 +1758,16 @@ static int kvaser_pciefd_probe(struct pci_dev *pdev, const struct pci_device_id *id) { int ret; + struct devlink *devlink; + struct device *dev = &pdev->dev; struct kvaser_pciefd *pcie; const struct kvaser_pciefd_irq_mask *irq_mask; - pcie = devm_kzalloc(&pdev->dev, sizeof(*pcie), GFP_KERNEL); - if (!pcie) + devlink = devlink_alloc(&kvaser_pciefd_devlink_ops, sizeof(*pcie), dev); + if (!devlink) return -ENOMEM; + pcie = devlink_priv(devlink); pci_set_drvdata(pdev, pcie); pcie->pci = pdev; pcie->driver_data = (const struct kvaser_pciefd_driver_data *)id->driver_data; @@ -1785,7 +1775,7 @@ static int kvaser_pciefd_probe(struct pci_dev *pdev, ret = pci_enable_device(pdev); if (ret) - return ret; + goto err_free_devlink; ret = pci_request_regions(pdev, KVASER_PCIEFD_DRV_NAME); if (ret) @@ -1813,7 +1803,7 @@ static int kvaser_pciefd_probe(struct pci_dev *pdev, ret = pci_alloc_irq_vectors(pcie->pci, 1, 1, PCI_IRQ_INTX | PCI_IRQ_MSI); if (ret < 0) { - dev_err(&pcie->pci->dev, "Failed to allocate IRQ vectors.\n"); + dev_err(dev, "Failed to allocate IRQ vectors.\n"); goto err_teardown_can_ctrls; } @@ -1826,7 +1816,7 @@ static int kvaser_pciefd_probe(struct pci_dev *pdev, ret = request_irq(pcie->pci->irq, kvaser_pciefd_irq_handler, IRQF_SHARED, KVASER_PCIEFD_DRV_NAME, pcie); if (ret) { - dev_err(&pcie->pci->dev, "Failed to request IRQ %d\n", pcie->pci->irq); + dev_err(dev, "Failed to request IRQ %d\n", pcie->pci->irq); goto err_pci_free_irq_vectors; } iowrite32(KVASER_PCIEFD_SRB_IRQ_DPD0 | KVASER_PCIEFD_SRB_IRQ_DPD1, @@ -1849,6 +1839,8 @@ static int kvaser_pciefd_probe(struct pci_dev *pdev, if (ret) goto err_free_irq; + devlink_register(devlink); + return 0; err_free_irq: @@ -1872,6 +1864,9 @@ err_release_regions: err_disable_pci: pci_disable_device(pdev); +err_free_devlink: + devlink_free(devlink); + return ret; } @@ -1886,6 +1881,7 @@ static void kvaser_pciefd_remove(struct pci_dev *pdev) unregister_candev(can->can.dev); timer_delete(&can->bec_poll_timer); kvaser_pciefd_pwm_stop(can); + kvaser_pciefd_devlink_port_unregister(can); } kvaser_pciefd_disable_irq_srcs(pcie); @@ -1895,9 +1891,11 @@ static void kvaser_pciefd_remove(struct pci_dev *pdev) for (i = 0; i < pcie->nr_channels; ++i) free_candev(pcie->can[i]->can.dev); + devlink_unregister(priv_to_devlink(pcie)); pci_iounmap(pdev, pcie->reg_base); pci_release_regions(pdev); pci_disable_device(pdev); + devlink_free(priv_to_devlink(pcie)); } static struct pci_driver kvaser_pciefd = { diff --git a/drivers/net/can/kvaser_pciefd/kvaser_pciefd_devlink.c b/drivers/net/can/kvaser_pciefd/kvaser_pciefd_devlink.c new file mode 100644 index 000000000000..1d61a8b0eeba --- /dev/null +++ b/drivers/net/can/kvaser_pciefd/kvaser_pciefd_devlink.c @@ -0,0 +1,60 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause +/* kvaser_pciefd devlink functions + * + * Copyright (C) 2025 KVASER AB, Sweden. All rights reserved. + */ +#include "kvaser_pciefd.h" + +#include <linux/netdevice.h> +#include <net/devlink.h> + +static int kvaser_pciefd_devlink_info_get(struct devlink *devlink, + struct devlink_info_req *req, + struct netlink_ext_ack *extack) +{ + struct kvaser_pciefd *pcie = devlink_priv(devlink); + char buf[] = "xxx.xxx.xxxxx"; + int ret; + + if (pcie->fw_version.major) { + snprintf(buf, sizeof(buf), "%u.%u.%u", + pcie->fw_version.major, + pcie->fw_version.minor, + pcie->fw_version.build); + ret = devlink_info_version_running_put(req, + DEVLINK_INFO_VERSION_GENERIC_FW, + buf); + if (ret) + return ret; + } + + return 0; +} + +const struct devlink_ops kvaser_pciefd_devlink_ops = { + .info_get = kvaser_pciefd_devlink_info_get, +}; + +int kvaser_pciefd_devlink_port_register(struct kvaser_pciefd_can *can) +{ + int ret; + struct devlink_port_attrs attrs = { + .flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL, + .phys.port_number = can->can.dev->dev_port, + }; + devlink_port_attrs_set(&can->devlink_port, &attrs); + + ret = devlink_port_register(priv_to_devlink(can->kv_pcie), + &can->devlink_port, can->can.dev->dev_port); + if (ret) + return ret; + + SET_NETDEV_DEVLINK_PORT(can->can.dev, &can->devlink_port); + + return 0; +} + +void kvaser_pciefd_devlink_port_unregister(struct kvaser_pciefd_can *can) +{ + devlink_port_unregister(&can->devlink_port); +} |