diff options
Diffstat (limited to 'src/soc/amd/mendocino/data_fabric.c')
| -rw-r--r-- | src/soc/amd/mendocino/data_fabric.c | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/src/soc/amd/mendocino/data_fabric.c b/src/soc/amd/mendocino/data_fabric.c index f1ee4df4b8..2569da8c67 100644 --- a/src/soc/amd/mendocino/data_fabric.c +++ b/src/soc/amd/mendocino/data_fabric.c @@ -1,105 +1,10 @@ /* SPDX-License-Identifier: GPL-2.0-only */ -/* TODO: Check if this is still correct */ - #include <acpi/acpi_device.h> -#include <amdblocks/data_fabric.h> -#include <arch/hpet.h> #include <console/console.h> -#include <cpu/x86/lapic_def.h> #include <device/device.h> #include <device/pci.h> #include <device/pci_ids.h> -#include <soc/data_fabric.h> -#include <soc/iomap.h> -#include <types.h> - -void data_fabric_set_mmio_np(void) -{ - /* - * Mark region from HPET-LAPIC or 0xfed00000-0xfee00000-1 as NP. - * - * AGESA has already programmed the NB MMIO routing, however nothing - * is yet marked as non-posted. - * - * If there exists an overlapping routing base/limit pair, trim its - * base or limit to avoid the new NP region. If any pair exists - * completely within HPET-LAPIC range, remove it. If any pair surrounds - * HPET-LAPIC, it must be split into two regions. - * - * TODO(b/156296146): Remove the settings from AGESA and allow coreboot - * to own everything. If not practical, consider erasing all settings - * and have coreboot reprogram them. At that time, make the source - * below more flexible. - * * Note that the code relies on the granularity of the HPET and - * LAPIC addresses being sufficiently large that the shifted limits - * +/-1 are always equivalent to the non-shifted values +/-1. - */ - - unsigned int i; - int reg; - uint32_t base, limit, ctrl; - const uint32_t np_bot = HPET_BASE_ADDRESS >> D18F0_MMIO_SHIFT; - const uint32_t np_top = (LAPIC_DEFAULT_BASE - 1) >> D18F0_MMIO_SHIFT; - - data_fabric_print_mmio_conf(); - - for (i = 0; i < NUM_NB_MMIO_REGS; i++) { - /* Adjust all registers that overlap */ - ctrl = data_fabric_broadcast_read32(0, NB_MMIO_CONTROL(i)); - if (!(ctrl & (DF_MMIO_WE | DF_MMIO_RE))) - continue; /* not enabled */ - - base = data_fabric_broadcast_read32(0, NB_MMIO_BASE(i)); - limit = data_fabric_broadcast_read32(0, NB_MMIO_LIMIT(i)); - - if (base > np_top || limit < np_bot) - continue; /* no overlap at all */ - - if (base >= np_bot && limit <= np_top) { - data_fabric_disable_mmio_reg(i); /* 100% within, so remove */ - continue; - } - - if (base < np_bot && limit > np_top) { - /* Split the configured region */ - data_fabric_broadcast_write32(0, NB_MMIO_LIMIT(i), np_bot - 1); - reg = data_fabric_find_unused_mmio_reg(); - if (reg < 0) { - /* Although a pair could be freed later, this condition is - * very unusual and deserves analysis. Flag an error and - * leave the topmost part unconfigured. */ - printk(BIOS_ERR, - "Error: Not enough NB MMIO routing registers\n"); - continue; - } - data_fabric_broadcast_write32(0, NB_MMIO_BASE(reg), np_top + 1); - data_fabric_broadcast_write32(0, NB_MMIO_LIMIT(reg), limit); - data_fabric_broadcast_write32(0, NB_MMIO_CONTROL(reg), ctrl); - continue; - } - - /* If still here, adjust only the base or limit */ - if (base <= np_bot) - data_fabric_broadcast_write32(0, NB_MMIO_LIMIT(i), np_bot - 1); - else - data_fabric_broadcast_write32(0, NB_MMIO_BASE(i), np_top + 1); - } - - reg = data_fabric_find_unused_mmio_reg(); - if (reg < 0) { - printk(BIOS_ERR, "Error: cannot configure region as NP\n"); - return; - } - - data_fabric_broadcast_write32(0, NB_MMIO_BASE(reg), np_bot); - data_fabric_broadcast_write32(0, NB_MMIO_LIMIT(reg), np_top); - data_fabric_broadcast_write32(0, NB_MMIO_CONTROL(reg), - (IOMS0_FABRIC_ID << DF_MMIO_DST_FABRIC_ID_SHIFT) | DF_MMIO_NP - | DF_MMIO_WE | DF_MMIO_RE); - - data_fabric_print_mmio_conf(); -} static const char *data_fabric_acpi_name(const struct device *dev) { |