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can: kvaser_pciefd: Add support for Kvaser M.2 PCIe 4xCAN

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Add support for new Kvaser pciefd device, M.2 PCIe 4xCAN, based on
Xilinx FPGA.

Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Link: https://lore.kernel.org/all/20231113134717.515037-1-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Jimmy Assarsson 2023-11-13 14:47:17 +01:00 committed by Marc Kleine-Budde
parent 7d06d15df2
commit 85216f56bd
2 changed files with 56 additions and 0 deletions
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1
drivers/net/can/Kconfig
View file

@ -168,6 +168,7 @@ config CAN_KVASER_PCIEFD
Kvaser Mini PCI Express 2xHS v2
Kvaser Mini PCI Express 1xCAN v3
Kvaser Mini PCI Express 2xCAN v3
Kvaser M.2 PCIe 4xCAN
config CAN_SLCAN
tristate "Serial / USB serial CAN Adaptors (slcan)"

55
drivers/net/can/kvaser_pciefd.c
View file

@ -47,12 +47,18 @@ MODULE_DESCRIPTION("CAN driver for Kvaser CAN/PCIe devices");
#define KVASER_PCIEFD_MINIPCIE_2CAN_V3_DEVICE_ID 0x0015
#define KVASER_PCIEFD_MINIPCIE_1CAN_V3_DEVICE_ID 0x0016
/* Xilinx based devices */
#define KVASER_PCIEFD_M2_4CAN_DEVICE_ID 0x0017
/* Altera SerDes Enable 64-bit DMA address translation */
#define KVASER_PCIEFD_ALTERA_DMA_64BIT BIT(0)
/* SmartFusion2 SerDes LSB address translation mask */
#define KVASER_PCIEFD_SF2_DMA_LSB_MASK GENMASK(31, 12)
/* Xilinx SerDes LSB address translation mask */
#define KVASER_PCIEFD_XILINX_DMA_LSB_MASK GENMASK(31, 12)
/* Kvaser KCAN CAN controller registers */
#define KVASER_PCIEFD_KCAN_FIFO_REG 0x100
#define KVASER_PCIEFD_KCAN_FIFO_LAST_REG 0x180
@ -281,6 +287,8 @@ static void kvaser_pciefd_write_dma_map_altera(struct kvaser_pciefd *pcie,
dma_addr_t addr, int index);
static void kvaser_pciefd_write_dma_map_sf2(struct kvaser_pciefd *pcie,
dma_addr_t addr, int index);
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;
@ -335,6 +343,18 @@ static const struct kvaser_pciefd_address_offset kvaser_pciefd_sf2_address_offse
.kcan_ch1 = 0x142000,
};
static const struct kvaser_pciefd_address_offset kvaser_pciefd_xilinx_address_offset = {
.serdes = 0x00208,
.pci_ien = 0x102004,
.pci_irq = 0x102008,
.sysid = 0x100000,
.loopback = 0x103000,
.kcan_srb_fifo = 0x120000,
.kcan_srb = 0x121000,
.kcan_ch0 = 0x140000,
.kcan_ch1 = 0x142000,
};
static const struct kvaser_pciefd_irq_mask kvaser_pciefd_altera_irq_mask = {
.kcan_rx0 = BIT(4),
.kcan_tx = { BIT(0), BIT(1), BIT(2), BIT(3) },
@ -347,6 +367,12 @@ static const struct kvaser_pciefd_irq_mask kvaser_pciefd_sf2_irq_mask = {
.all = GENMASK(19, 16) | BIT(4),
};
static const struct kvaser_pciefd_irq_mask kvaser_pciefd_xilinx_irq_mask = {
.kcan_rx0 = BIT(4),
.kcan_tx = { BIT(16), BIT(17), BIT(18), BIT(19) },
.all = GENMASK(19, 16) | BIT(4),
};
static const struct kvaser_pciefd_dev_ops kvaser_pciefd_altera_dev_ops = {
.kvaser_pciefd_write_dma_map = kvaser_pciefd_write_dma_map_altera,
};
@ -355,6 +381,10 @@ static const struct kvaser_pciefd_dev_ops kvaser_pciefd_sf2_dev_ops = {
.kvaser_pciefd_write_dma_map = kvaser_pciefd_write_dma_map_sf2,
};
static const struct kvaser_pciefd_dev_ops kvaser_pciefd_xilinx_dev_ops = {
.kvaser_pciefd_write_dma_map = kvaser_pciefd_write_dma_map_xilinx,
};
static const struct kvaser_pciefd_driver_data kvaser_pciefd_altera_driver_data = {
.address_offset = &kvaser_pciefd_altera_address_offset,
.irq_mask = &kvaser_pciefd_altera_irq_mask,
@ -367,6 +397,12 @@ static const struct kvaser_pciefd_driver_data kvaser_pciefd_sf2_driver_data = {
.ops = &kvaser_pciefd_sf2_dev_ops,
};
static const struct kvaser_pciefd_driver_data kvaser_pciefd_xilinx_driver_data = {
.address_offset = &kvaser_pciefd_xilinx_address_offset,
.irq_mask = &kvaser_pciefd_xilinx_irq_mask,
.ops = &kvaser_pciefd_xilinx_dev_ops,
};
struct kvaser_pciefd_can {
struct can_priv can;
struct kvaser_pciefd *kv_pcie;
@ -456,6 +492,10 @@ static struct pci_device_id kvaser_pciefd_id_table[] = {
PCI_DEVICE(KVASER_PCIEFD_VENDOR, KVASER_PCIEFD_MINIPCIE_1CAN_V3_DEVICE_ID),
.driver_data = (kernel_ulong_t)&kvaser_pciefd_sf2_driver_data,
},
{
PCI_DEVICE(KVASER_PCIEFD_VENDOR, KVASER_PCIEFD_M2_4CAN_DEVICE_ID),
.driver_data = (kernel_ulong_t)&kvaser_pciefd_xilinx_driver_data,
},
{
0,
},
@ -1035,6 +1075,21 @@ static void kvaser_pciefd_write_dma_map_sf2(struct kvaser_pciefd *pcie,
iowrite32(msb, serdes_base + 0x4);
}
static void kvaser_pciefd_write_dma_map_xilinx(struct kvaser_pciefd *pcie,
dma_addr_t addr, int index)
{
void __iomem *serdes_base;
u32 lsb = addr & KVASER_PCIEFD_XILINX_DMA_LSB_MASK;
u32 msb = 0x0;
#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
msb = addr >> 32;
#endif
serdes_base = KVASER_PCIEFD_SERDES_ADDR(pcie) + 0x8 * index;
iowrite32(msb, serdes_base);
iowrite32(lsb, serdes_base + 0x4);
}
static int kvaser_pciefd_setup_dma(struct kvaser_pciefd *pcie)
{
int i;