Add a new DM driver supporting FTPCI100 IP used in SoC designs. This implementation is not based on the old non-DM ftpci100 code dropped from U-Boot.

Enable the driver in sandbox_defconfig to test compilability.

Signed-off-by: Sergei Antonov saproj@gmail.com --- configs/sandbox_defconfig | 1 + drivers/pci/Kconfig | 6 +++ drivers/pci/Makefile | 1 + drivers/pci/pci_ftpci100.c | 95 ++++++++++++++++++++++++++++++++++++++ 4 files changed, 103 insertions(+) create mode 100644 drivers/pci/pci_ftpci100.c

diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig index b6c4f735f2bd..c8538d4a193c 100644 --- a/configs/sandbox_defconfig +++ b/configs/sandbox_defconfig @@ -233,6 +233,7 @@ CONFIG_MUX_MMIO=y CONFIG_NVME_PCI=y CONFIG_PCI_REGION_MULTI_ENTRY=y CONFIG_PCI_SANDBOX=y +CONFIG_PCI_FTPCI100=y CONFIG_PHY=y CONFIG_PHY_SANDBOX=y CONFIG_PINCTRL=y diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig index aca439d92139..f0678921e99d 100644 --- a/drivers/pci/Kconfig +++ b/drivers/pci/Kconfig @@ -125,6 +125,12 @@ config PCIE_APPLE Say Y here if you want to enable PCIe controller support on Apple SoCs.

+config PCI_FTPCI100 + bool "Enable Faraday FTPCI100 PCI Bridge Controller driver" + help + Say Y here if you want to enable Faraday FTPCI100 PCI. + FTPCI100 IP is used in SoC chip designs. + config PCI_GT64120 bool "GT64120 PCI support" depends on MIPS diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile index 11f60c6991d9..033dce98a4e1 100644 --- a/drivers/pci/Makefile +++ b/drivers/pci/Makefile @@ -14,6 +14,7 @@ obj-$(CONFIG_PCI) += pci_auto_common.o pci_common.o obj-$(CONFIG_PCIE_ECAM_GENERIC) += pcie_ecam_generic.o obj-$(CONFIG_PCIE_ECAM_SYNQUACER) += pcie_ecam_synquacer.o obj-$(CONFIG_PCIE_APPLE) += pcie_apple.o +obj-$(CONFIG_PCI_FTPCI100) += pci_ftpci100.o obj-$(CONFIG_PCI_GT64120) += pci_gt64120.o obj-$(CONFIG_PCI_MPC85XX) += pci_mpc85xx.o obj-$(CONFIG_PCI_MSC01) += pci_msc01.o diff --git a/drivers/pci/pci_ftpci100.c b/drivers/pci/pci_ftpci100.c new file mode 100644 index 000000000000..a1775445005a --- /dev/null +++ b/drivers/pci/pci_ftpci100.c @@ -0,0 +1,95 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +#include <common.h> +#include <pci.h> +#include <dm.h> +#include <asm/io.h> + +struct ftpci100_data { + void *reg_base; +}; + +/* AHB Control Registers */ +struct ftpci100_ahbc { + u32 iosize; /* 0x00 - I/O Space Size Signal */ + u32 prot; /* 0x04 - AHB Protection */ + u32 rsved[8]; /* 0x08-0x24 - Reserved */ + u32 conf; /* 0x28 - PCI Configuration */ + u32 data; /* 0x2c - PCI Configuration DATA */ +}; + +static int ftpci100_read_config(const struct udevice *dev, pci_dev_t bdf, + uint offset, ulong *valuep, + enum pci_size_t size) +{ + struct ftpci100_data *priv = dev_get_priv(dev); + struct ftpci100_ahbc *regs = priv->reg_base; + u32 data; + + out_le32(&regs->conf, PCI_CONF1_ADDRESS(PCI_BUS(bdf), PCI_DEV(bdf), PCI_FUNC(bdf), offset)); + data = in_le32(&regs->data); + *valuep = pci_conv_32_to_size(data, offset, size); + + return 0; +} + +static int ftpci100_write_config(struct udevice *dev, pci_dev_t bdf, + uint offset, ulong value, + enum pci_size_t size) +{ + struct ftpci100_data *priv = dev_get_priv(dev); + struct ftpci100_ahbc *regs = priv->reg_base; + u32 data; + + out_le32(&regs->conf, PCI_CONF1_ADDRESS(PCI_BUS(bdf), PCI_DEV(bdf), PCI_FUNC(bdf), offset)); + + if (size == PCI_SIZE_32) { + data = value; + } else { + u32 old = in_le32(&regs->data); + + data = pci_conv_size_to_32(old, value, offset, size); + } + + out_le32(&regs->data, data); + + return 0; +} + +static int ftpci100_probe(struct udevice *dev) +{ + struct ftpci100_data *priv = dev_get_priv(dev); + struct pci_region *io, *mem; + int count; + + count = pci_get_regions(dev, &io, &mem, NULL); + if (count != 2) { + printf("%s: wrong count of regions: %d != 2\n", dev->name, count); + return -EINVAL; + } + + priv->reg_base = phys_to_virt(io->phys_start); + if (!priv->reg_base) + return -EINVAL; + + return 0; +} + +static const struct dm_pci_ops ftpci100_ops = { + .read_config = ftpci100_read_config, + .write_config = ftpci100_write_config, +}; + +static const struct udevice_id ftpci100_ids[] = { + { .compatible = "faraday,ftpci100" }, + { } +}; + +U_BOOT_DRIVER(ftpci100_pci) = { + .name = "ftpci100_pci", + .id = UCLASS_PCI, + .of_match = ftpci100_ids, + .ops = &ftpci100_ops, + .probe = ftpci100_probe, + .priv_auto = sizeof(struct ftpci100_data), +};