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/* 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 IOM */
mmio_range(dev, PCI_BASE_ADDRESS_0, IOM_BASE_ADDR, IOM_BASE_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,
};
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