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03de305ec4
As part of bringing the master branch back in to next, we need to allow for all of these changes to exist here. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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#include <pci.h>
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#include <dm.h>
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#include <asm/io.h>
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struct ftpci100_data {
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void *reg_base;
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};
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/* AHB Control Registers */
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struct ftpci100_ahbc {
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u32 iosize; /* 0x00 - I/O Space Size Signal */
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u32 prot; /* 0x04 - AHB Protection */
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u32 rsved[8]; /* 0x08-0x24 - Reserved */
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u32 conf; /* 0x28 - PCI Configuration */
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u32 data; /* 0x2c - PCI Configuration DATA */
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};
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static int ftpci100_read_config(const struct udevice *dev, pci_dev_t bdf,
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uint offset, ulong *valuep,
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enum pci_size_t size)
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{
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struct ftpci100_data *priv = dev_get_priv(dev);
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struct ftpci100_ahbc *regs = priv->reg_base;
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u32 data;
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out_le32(®s->conf, PCI_CONF1_ADDRESS(PCI_BUS(bdf), PCI_DEV(bdf), PCI_FUNC(bdf), offset));
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data = in_le32(®s->data);
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*valuep = pci_conv_32_to_size(data, offset, size);
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return 0;
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}
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static int ftpci100_write_config(struct udevice *dev, pci_dev_t bdf,
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uint offset, ulong value,
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enum pci_size_t size)
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{
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struct ftpci100_data *priv = dev_get_priv(dev);
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struct ftpci100_ahbc *regs = priv->reg_base;
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u32 data;
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out_le32(®s->conf, PCI_CONF1_ADDRESS(PCI_BUS(bdf), PCI_DEV(bdf), PCI_FUNC(bdf), offset));
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if (size == PCI_SIZE_32) {
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data = value;
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} else {
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u32 old = in_le32(®s->data);
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data = pci_conv_size_to_32(old, value, offset, size);
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}
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out_le32(®s->data, data);
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return 0;
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}
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static int ftpci100_probe(struct udevice *dev)
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{
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struct ftpci100_data *priv = dev_get_priv(dev);
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struct pci_region *io, *mem;
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int count;
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count = pci_get_regions(dev, &io, &mem, NULL);
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if (count != 2) {
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printf("%s: wrong count of regions: %d != 2\n", dev->name, count);
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return -EINVAL;
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}
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priv->reg_base = phys_to_virt(io->phys_start);
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if (!priv->reg_base)
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return -EINVAL;
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return 0;
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}
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static const struct dm_pci_ops ftpci100_ops = {
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.read_config = ftpci100_read_config,
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.write_config = ftpci100_write_config,
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};
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static const struct udevice_id ftpci100_ids[] = {
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{ .compatible = "faraday,ftpci100" },
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{ }
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};
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U_BOOT_DRIVER(ftpci100_pci) = {
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.name = "ftpci100_pci",
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.id = UCLASS_PCI,
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.of_match = ftpci100_ids,
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.ops = &ftpci100_ops,
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.probe = ftpci100_probe,
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.priv_auto = sizeof(struct ftpci100_data),
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};
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