| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| |
| #include <assert.h> |
| #include <intelblocks/acpi.h> |
| #include <soc/chip_common.h> |
| #include <soc/pci_devs.h> |
| #include <soc/util.h> |
| #include <stdint.h> |
| #include <stdlib.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; |
| } |
| |
| void iio_domain_set_acpi_name(struct device *dev, const char *prefix) |
| { |
| const union xeon_domain_path dn = { |
| .domain_path = dev->path.domain.domain |
| }; |
| |
| assert(dn.socket < CONFIG_MAX_SOCKET); |
| assert(dn.stack < 16); |
| assert(prefix != NULL && strlen(prefix) == 2); |
| |
| if (dn.socket >= CONFIG_MAX_SOCKET || dn.stack >= 16 || |
| !prefix || strlen(prefix) != 2) |
| return; |
| |
| char *name = xmalloc(ACPI_NAME_BUFFER_SIZE); |
| snprintf(name, ACPI_NAME_BUFFER_SIZE, "%s%1X%1X", prefix, dn.socket, dn.stack); |
| dev->name = name; |
| } |
| |
| const char *soc_acpi_name(const struct device *dev) |
| { |
| if (dev->path.type == DEVICE_PATH_DOMAIN) |
| return dev->name; |
| |
| /* FIXME: Add SoC specific device names here */ |
| |
| return NULL; |
| } |