| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <console/console.h> |
| #include <device/device.h> |
| #include <device/pci_def.h> |
| #include <intelblocks/p2sb.h> |
| #include <soc/iomap.h> |
| |
| void p2sb_soc_get_sb_mask(uint32_t *ep_mask, size_t count) |
| { |
| uint32_t mask; |
| |
| if (count != P2SB_EP_MASK_MAX_REG) { |
| printk(BIOS_ERR, "Unable to program EPMASK registers\n"); |
| return; |
| } |
| |
| /* Remove the host accessing right to PSF register range. |
| * Set p2sb PCI offset EPMASK5 [29, 28, 27, 26] to disable Sideband |
| * access for PCI Root Bridge. |
| */ |
| mask = (1 << 29) | (1 << 28) | (1 << 27) | (1 << 26); |
| |
| ep_mask[P2SB_EP_MASK_5_REG] = mask; |
| |
| /* |
| * Set p2sb PCI offset EPMASK7 [31, 30] to disable Sideband |
| * access for Broadcast and Multicast. |
| */ |
| mask = (1 << 31) | (1 << 30); |
| |
| ep_mask[P2SB_EP_MASK_7_REG] = mask; |
| } |
| |
| static void ioe_p2sb_read_resources(struct device *dev) |
| { |
| /* Add the fixed MMIO resource for IOE P2SB */ |
| mmio_range(dev, PCI_BASE_ADDRESS_0, IOE_P2SB_BAR, IOE_P2SB_SIZE); |
| } |
| |
| static void p2sb_read_resources(struct device *dev) |
| { |
| /* |
| * There's only one resource on the P2SB device. It's also already |
| * manually set to a fixed address in earlier boot stages. |
| * The following code makes sure that it doesn't change even the |
| * resource allocator is being run. |
| */ |
| mmio_range(dev, PCI_BASE_ADDRESS_0, P2SB_BAR, P2SB_SIZE); |
| } |
| |
| struct device_operations ioe_p2sb_ops = { |
| .read_resources = ioe_p2sb_read_resources, |
| .set_resources = noop_set_resources, |
| .scan_bus = scan_static_bus, |
| }; |
| |
| struct device_operations soc_p2sb_ops = { |
| .read_resources = p2sb_read_resources, |
| .set_resources = noop_set_resources, |
| .scan_bus = scan_static_bus, |
| }; |