diff options
| -rw-r--r-- | src/northbridge/intel/x4x/northbridge.c | 53 |
1 files changed, 19 insertions, 34 deletions
diff --git a/src/northbridge/intel/x4x/northbridge.c b/src/northbridge/intel/x4x/northbridge.c index 39f24d302b..252e14fda6 100644 --- a/src/northbridge/intel/x4x/northbridge.c +++ b/src/northbridge/intel/x4x/northbridge.c @@ -206,45 +206,30 @@ static void enable_dev(struct device *dev) dev->ops = &cpu_bus_ops; } -static void x4x_init(void *const chip_info) +static void hide_pci_fn(const int dev_bit_base, const struct device *dev) +{ + if (!dev || dev->enabled) + return; + const unsigned int fn = PCI_FUNC(dev->path.pci.devfn); + const struct device *const d0f0 = pcidev_on_root(0, 0); + pci_update_config32(d0f0, D0F0_DEVEN, ~(1 << (dev_bit_base + fn)), 0); +} + +static void hide_pci_dev(const int dev, int functions, const int dev_bit_base) { - int dev, fn, bit_base; + for (; functions >= 0; functions--) + hide_pci_fn(dev_bit_base, pcidev_on_root(dev, functions)); +} +static void x4x_init(void *const chip_info) +{ struct device *const d0f0 = pcidev_on_root(0x0, 0); /* Hide internal functions based on devicetree info. */ - for (dev = 6; dev > 0; --dev) { - switch (dev) { - case 6: /* PEG1: only on P45 */ - fn = 0; - bit_base = 13; - break; - case 3: /* ME */ - fn = 3; - bit_base = 6; - break; - case 2: /* IGD */ - fn = 1; - bit_base = 3; - break; - case 1: /* PEG0 */ - fn = 0; - bit_base = 1; - break; - case 4: /* Nothing to do */ - case 5: - continue; - } - for (; fn >= 0; --fn) { - const struct device *const d = - pcidev_on_root(dev, fn); - if (!d || d->enabled) - continue; - const u32 deven = pci_read_config32(d0f0, D0F0_DEVEN); - pci_write_config32(d0f0, D0F0_DEVEN, - deven & ~(1 << (bit_base + fn))); - } - } + hide_pci_dev(6, 0, 13); /* PEG1: only on P45 */ + hide_pci_dev(3, 3, 6); /* ME */ + hide_pci_dev(2, 1, 3); /* IGD */ + hide_pci_dev(1, 0, 1); /* PEG0 */ const u32 deven = pci_read_config32(d0f0, D0F0_DEVEN); if (!(deven & (0xf << 6))) |