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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <assert.h>
#include <intelblocks/acpi.h>
#include <soc/pci_devs.h>
#include <soc/util.h>
#include <stdint.h>
#include "chip.h"
/*
* List of supported C-states in this processor.
*/
enum {
C_STATE_C1, /* 0 */
C_STATE_C3, /* 1 */
C_STATE_C6, /* 2 */
C_STATE_C7, /* 3 */
NUM_C_STATES
};
static const acpi_cstate_t cstate_map[NUM_C_STATES] = {
[C_STATE_C1] = {
/* C1 */
.latency = 1,
.power = 0x3e8,
.resource = MWAIT_RES(0, 0),
},
[C_STATE_C3] = {
/* C3 */
.latency = 15,
.power = 0x1f4,
.resource = MWAIT_RES(1, 0),
},
[C_STATE_C6] = {
/* C6 */
.latency = 41,
.power = 0x15e,
.resource = MWAIT_RES(2, 0),
},
[C_STATE_C7] = {
/* C7 */
.latency = 41,
.power = 0x0c8,
.resource = MWAIT_RES(3, 0),
}
};
/* Max states supported */
static int cstate_set_all[] = {
C_STATE_C1,
C_STATE_C3,
C_STATE_C6,
C_STATE_C7
};
static int cstate_set_c1_c6[] = {
C_STATE_C1,
C_STATE_C6,
};
const acpi_cstate_t *soc_get_cstate_map(size_t *entries)
{
static acpi_cstate_t map[ARRAY_SIZE(cstate_set_all)];
int *cstate_set;
int i;
const config_t *config = config_of_soc();
const enum acpi_cstate_mode states = config->cstate_states;
switch (states) {
case CSTATES_C1C6:
*entries = ARRAY_SIZE(cstate_set_c1_c6);
cstate_set = cstate_set_c1_c6;
break;
case CSTATES_ALL:
default:
*entries = ARRAY_SIZE(cstate_set_all);
cstate_set = cstate_set_all;
break;
}
for (i = 0; i < *entries; i++) {
map[i] = cstate_map[cstate_set[i]];
map[i].ctype = i + 1;
}
return map;
}
static uintptr_t xeonsp_ioapic_bases[CONFIG(XEON_SP_HAVE_IIO_IOAPIC) * 8 + 1];
size_t soc_get_ioapic_info(const uintptr_t *ioapic_bases[])
{
int index = 0;
const IIO_UDS *hob = get_iio_uds();
*ioapic_bases = xeonsp_ioapic_bases;
for (int socket = 0; socket < hob->PlatformData.numofIIO; ++socket) {
for (int stack = 0; stack < MAX_IIO_STACK; ++stack) {
const STACK_RES *ri =
&hob->PlatformData.IIO_resource[socket].StackRes[stack];
if (!is_iio_stack_res(ri))
continue;
uint32_t ioapic_base = ri->IoApicBase;
assert(index < ARRAY_SIZE(xeonsp_ioapic_bases));
xeonsp_ioapic_bases[index++] = ioapic_base;
if (!CONFIG(XEON_SP_HAVE_IIO_IOAPIC))
return index;
/*
* Stack 0 has non-PCH IOAPIC and PCH IOAPIC.
* The IIO IOAPIC is placed at 0x1000 from the reported base.
*/
if (socket == 0 && stack == 0) {
ioapic_base += 0x1000;
assert(index < ARRAY_SIZE(xeonsp_ioapic_bases));
xeonsp_ioapic_bases[index++] = ioapic_base;
}
}
}
return index;
}
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