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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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#include <common.h>
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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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