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drivers/wifi: Add generic WiFi driver 

Add generic WiFi driver to support common device operations across
multiple types of WiFi controller.

BUG=None
BRANCH=None
TEST=Boot to ChromeOS. Ensure that the SSDT table contains SAR tables
and wakeup GPE information. Ensure that the SSDT table is same after the
change.

Change-Id: Ica5edf95a37c8ed60f7e159d94fd58af5d41c0ef
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33155
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Karthikeyan Ramasubramanian 2019-05-29 15:09:42 -06:00 committed by Martin Roth
parent 328c8bbd23
commit fd5d788f5e
7 changed files with 367 additions and 252 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
src/drivers/intel/wifi/Kconfig
View File

@ -2,52 +2,7 @@ config DRIVERS_INTEL_WIFI
bool "Support Intel PCI-e WiFi adapters"
depends on ARCH_X86
default y if PCIEXP_PLUGIN_SUPPORT
select DRIVERS_GENERIC_WIFI if HAVE_ACPI_TABLES
help
When enabled, add identifiers in ACPI and SMBIOS tables to
make OS drivers work with certain Intel PCI-e WiFi chipsets.
config USE_SAR
bool
default n
help
Enable it when wifi driver uses SAR configuration feature.
VPD entry "wifi_sar" is read to get SAR settings, if its
not found driver may look into CBFS for default settigs.
WIFI_SAR_CBFS is option to enable CBFS lookup.
config SAR_ENABLE
bool
default n
depends on USE_SAR
config DSAR_ENABLE
bool
default n
depends on USE_SAR
config GEO_SAR_ENABLE
bool
default n
depends on USE_SAR
config WIFI_SAR_CBFS
bool "Enable SAR table addition to CBFS"
default n
depends on USE_SAR
help
wifi driver would look for "wifi_sar" vpd key and load SAR settings from
it, if the vpd key is not found then the driver tries to look for sar
settings from CBFS with file name wifi_sar_defaults.hex.
So OEM/ODM can override wifi sar with VPD.
config WIFI_SAR_CBFS_FILEPATH
string "The cbfs file which has WIFI SAR defaults"
depends on WIFI_SAR_CBFS
default "src/mainboard/$(MAINBOARDDIR)/wifi_sar_defaults.hex"
config DSAR_SET_NUM
hex "Number of SAR sets when D-SAR is enabled"
default 0x3
depends on USE_SAR
help
There can be up to 3 optional SAR table sets.

23
src/drivers/intel/wifi/chip.h
View File

@ -13,26 +13,11 @@
* GNU General Public License for more details.
*/
#ifndef _WIFI_CHIP_H_
#define _WIFI_CHIP_H_
/* WRDS Spec Revision */
#define WRDS_REVISION 0x0
/* EWRD Spec Revision */
#define EWRD_REVISION 0x0
/* WRDS Domain type */
#define WRDS_DOMAIN_TYPE_WIFI 0x7
/* EWRD Domain type */
#define EWRD_DOMAIN_TYPE_WIFI 0x7
/* WGDS Domain type */
#define WGDS_DOMAIN_TYPE_WIFI 0x7
#ifndef _INTEL_WIFI_CHIP_H_
#define _INTEL_WIFI_CHIP_H_
struct drivers_intel_wifi_config {
unsigned wake; /* Wake pin for ACPI _PRW */
unsigned int wake; /* Wake pin for ACPI _PRW */
};
#endif /* _WIFI_CHIP_H_ */
#endif /* _INTEL_WIFI_CHIP_H_ */

195
src/drivers/intel/wifi/wifi.c
View File

@ -15,19 +15,16 @@
* GNU General Public License for more details.
*/
#include <arch/acpi_device.h>
#include <arch/acpigen.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ops.h>
#include <device/pci_ids.h>
#include <elog.h>
#include <sar.h>
#include <smbios.h>
#include <string.h>
#include <wrdd.h>
#include "chip.h"
#include "drivers/wifi/generic_wifi.h"
#define PMCS_DR 0xcc
#define PME_STS (1 << 15)
@ -65,194 +62,18 @@ static int smbios_write_wifi(struct device *dev, int *handle,
}
#endif
__weak
int get_wifi_sar_limits(struct wifi_sar_limits *sar_limits)
{
return -1;
}
#if CONFIG(HAVE_ACPI_TABLES)
static void emit_sar_acpi_structures(void)
{
int i, j, package_size;
struct wifi_sar_limits sar_limits;
struct wifi_sar_delta_table *wgds;
/* Retrieve the sar limits data */
if (get_wifi_sar_limits(&sar_limits) < 0) {
printk(BIOS_ERR, "Error: failed from getting SAR limits!\n");
return;
}
/*
* Name ("WRDS", Package () {
* Revision,
* Package () {
* Domain Type, // 0x7:WiFi
* WiFi SAR BIOS, // BIOS SAR Enable/disable
* SAR Table Set // Set#1 of SAR Table (10 bytes)
* }
* })
*/
acpigen_write_name("WRDS");
acpigen_write_package(2);
acpigen_write_dword(WRDS_REVISION);
/* Emit 'Domain Type' + 'WiFi SAR BIOS' + 10 bytes for Set#1 */
package_size = 1 + 1 + BYTES_PER_SAR_LIMIT;
acpigen_write_package(package_size);
acpigen_write_dword(WRDS_DOMAIN_TYPE_WIFI);
acpigen_write_dword(CONFIG(SAR_ENABLE));
for (i = 0; i < BYTES_PER_SAR_LIMIT; i++)
acpigen_write_byte(sar_limits.sar_limit[0][i]);
acpigen_pop_len();
acpigen_pop_len();
/*
* Name ("EWRD", Package () {
* Revision,
* Package () {
* Domain Type, // 0x7:WiFi
* Dynamic SAR Enable, // Dynamic SAR Enable/disable
* Extended SAR sets, // Number of optional SAR table sets
* SAR Table Set, // Set#2 of SAR Table (10 bytes)
* SAR Table Set, // Set#3 of SAR Table (10 bytes)
* SAR Table Set // Set#4 of SAR Table (10 bytes)
* }
* })
*/
acpigen_write_name("EWRD");
acpigen_write_package(2);
acpigen_write_dword(EWRD_REVISION);
/*
* Emit 'Domain Type' + "Dynamic SAR Enable' + 'Extended SAR sets'
* + number of bytes for Set#2 & 3 & 4
*/
package_size = 1 + 1 + 1 + (NUM_SAR_LIMITS - 1) * BYTES_PER_SAR_LIMIT;
acpigen_write_package(package_size);
acpigen_write_dword(EWRD_DOMAIN_TYPE_WIFI);
acpigen_write_dword(CONFIG(DSAR_ENABLE));
acpigen_write_dword(CONFIG_DSAR_SET_NUM);
for (i = 1; i < NUM_SAR_LIMITS; i++)
for (j = 0; j < BYTES_PER_SAR_LIMIT; j++)
acpigen_write_byte(sar_limits.sar_limit[i][j]);
acpigen_pop_len();
acpigen_pop_len();
if (!CONFIG(GEO_SAR_ENABLE))
return;
/*
* Name ("WGDS", Package() {
* Revision,
* Package() {
* DomainType, // 0x7:WiFi
* WgdsWiFiSarDeltaGroup1PowerMax1, // Group 1 FCC 2400 Max
* WgdsWiFiSarDeltaGroup1PowerChainA1, // Group 1 FCC 2400 A Offset
* WgdsWiFiSarDeltaGroup1PowerChainB1, // Group 1 FCC 2400 B Offset
* WgdsWiFiSarDeltaGroup1PowerMax2, // Group 1 FCC 5200 Max
* WgdsWiFiSarDeltaGroup1PowerChainA2, // Group 1 FCC 5200 A Offset
* WgdsWiFiSarDeltaGroup1PowerChainB2, // Group 1 FCC 5200 B Offset
* WgdsWiFiSarDeltaGroup2PowerMax1, // Group 2 EC Jap 2400 Max
* WgdsWiFiSarDeltaGroup2PowerChainA1, // Group 2 EC Jap 2400 A Offset
* WgdsWiFiSarDeltaGroup2PowerChainB1, // Group 2 EC Jap 2400 B Offset
* WgdsWiFiSarDeltaGroup2PowerMax2, // Group 2 EC Jap 5200 Max
* WgdsWiFiSarDeltaGroup2PowerChainA2, // Group 2 EC Jap 5200 A Offset
* WgdsWiFiSarDeltaGroup2PowerChainB2, // Group 2 EC Jap 5200 B Offset
* WgdsWiFiSarDeltaGroup3PowerMax1, // Group 3 ROW 2400 Max
* WgdsWiFiSarDeltaGroup3PowerChainA1, // Group 3 ROW 2400 A Offset
* WgdsWiFiSarDeltaGroup3PowerChainB1, // Group 3 ROW 2400 B Offset
* WgdsWiFiSarDeltaGroup3PowerMax2, // Group 3 ROW 5200 Max
* WgdsWiFiSarDeltaGroup3PowerChainA2, // Group 3 ROW 5200 A Offset
* WgdsWiFiSarDeltaGroup3PowerChainB2, // Group 3 ROW 5200 B Offset
* }
* })
*/
wgds = &sar_limits.wgds;
acpigen_write_name("WGDS");
acpigen_write_package(2);
acpigen_write_dword(wgds->version);
/* Emit 'Domain Type' +
* Group specific delta of power (6 bytes * NUM_WGDS_SAR_GROUPS)
*/
package_size = sizeof(sar_limits.wgds.group) + 1;
acpigen_write_package(package_size);
acpigen_write_dword(WGDS_DOMAIN_TYPE_WIFI);
for (i = 0; i < SAR_NUM_WGDS_GROUPS; i++) {
acpigen_write_byte(wgds->group[i].power_max_2400mhz);
acpigen_write_byte(wgds->group[i].power_chain_a_2400mhz);
acpigen_write_byte(wgds->group[i].power_chain_b_2400mhz);
acpigen_write_byte(wgds->group[i].power_max_5200mhz);
acpigen_write_byte(wgds->group[i].power_chain_a_5200mhz);
acpigen_write_byte(wgds->group[i].power_chain_b_5200mhz);
}
acpigen_pop_len();
acpigen_pop_len();
}
static void intel_wifi_fill_ssdt(struct device *dev)
{
struct drivers_intel_wifi_config *config = dev->chip_info;
const char *path = acpi_device_path(dev->bus->dev);
u32 address;
struct generic_wifi_config generic_config;
if (!path || !dev->enabled)
return;
/* Device */
acpigen_write_scope(path);
acpigen_write_device(acpi_device_name(dev));
acpigen_write_name_integer("_UID", 0);
if (dev->chip_ops)
acpigen_write_name_string("_DDN", dev->chip_ops->name);
/* Address */
address = PCI_SLOT(dev->path.pci.devfn) & 0xffff;
address <<= 16;
address |= PCI_FUNC(dev->path.pci.devfn) & 0xffff;
acpigen_write_name_dword("_ADR", address);
/* Wake capabilities */
if (config && config->wake)
acpigen_write_PRW(config->wake, 3);
/* Fill regulatory domain structure */
if (CONFIG(HAVE_REGULATORY_DOMAIN)) {
/*
* Name ("WRDD", Package () {
* WRDD_REVISION, // Revision
* Package () {
* WRDD_DOMAIN_TYPE_WIFI, // Domain Type, 7:WiFi
* wifi_regulatory_domain() // Country Identifier
* }
* })
*/
acpigen_write_name("WRDD");
acpigen_write_package(2);
acpigen_write_integer(WRDD_REVISION);
acpigen_write_package(2);
acpigen_write_dword(WRDD_DOMAIN_TYPE_WIFI);
acpigen_write_dword(wifi_regulatory_domain());
acpigen_pop_len();
acpigen_pop_len();
if (config) {
generic_config.wake = config->wake;
/* By default, all intel wifi chips wake from S3 */
generic_config.maxsleep = 3;
}
/* Fill Wifi sar related ACPI structures */
if (CONFIG(USE_SAR))
emit_sar_acpi_structures();
acpigen_pop_len(); /* Device */
acpigen_pop_len(); /* Scope */
printk(BIOS_INFO, "%s.%s: %s %s\n", path, acpi_device_name(dev),
dev->chip_ops ? dev->chip_ops->name : "", dev_path(dev));
}
static const char *intel_wifi_acpi_name(const struct device *dev)
{
return "WIFI";
generic_wifi_fill_ssdt(dev, config ? &generic_config : NULL);
}
#endif
@ -282,7 +103,7 @@ struct device_operations device_ops = {
#endif
.ops_pci = &pci_ops,
#if CONFIG(HAVE_ACPI_TABLES)
.acpi_name = intel_wifi_acpi_name,
.acpi_name = generic_wifi_acpi_name,
.acpi_fill_ssdt_generator = intel_wifi_fill_ssdt,
#endif
};

57
src/drivers/wifi/Kconfig Normal file
View File

@ -0,0 +1,57 @@
config DRIVERS_GENERIC_WIFI
bool
default n
depends on HAVE_ACPI_TABLES
help
When enabled, add identifiers in ACPI tables that are common
to WiFi chipsets from multiple vendors.
if DRIVERS_GENERIC_WIFI
config USE_SAR
bool
default n
help
Enable it when wifi driver uses SAR configuration feature.
VPD entry "wifi_sar" is read to get SAR settings, if its
not found driver may look into CBFS for default settigs.
WIFI_SAR_CBFS is option to enable CBFS lookup.
config SAR_ENABLE
bool
default n
depends on USE_SAR
config DSAR_ENABLE
bool
default n
depends on USE_SAR
config GEO_SAR_ENABLE
bool
default n
depends on USE_SAR
config WIFI_SAR_CBFS
bool "Enable SAR table addition to CBFS"
default n
depends on USE_SAR
help
wifi driver would look for "wifi_sar" vpd key and load SAR settings from
it, if the vpd key is not found then the driver tries to look for sar
settings from CBFS with file name wifi_sar_defaults.hex.
So OEM/ODM can override wifi sar with VPD.
config WIFI_SAR_CBFS_FILEPATH
string "The cbfs file which has WIFI SAR defaults"
depends on WIFI_SAR_CBFS
default "src/mainboard/$(MAINBOARDDIR)/wifi_sar_defaults.hex"
config DSAR_SET_NUM
hex "Number of SAR sets when D-SAR is enabled"
default 0x3
depends on USE_SAR
help
There can be up to 3 optional SAR table sets.
endif # DRIVERS_GENERIC_WIFI

1
src/drivers/wifi/Makefile.inc Normal file
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@ -0,0 +1 @@
ramstage-$(CONFIG_DRIVERS_GENERIC_WIFI) += generic.c

245
src/drivers/wifi/generic.c Normal file
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@ -0,0 +1,245 @@
/*
* This file is part of the coreboot project.
*
* Copyright 2019 Google LLC
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 or (at your option)
* any later version of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/acpi_device.h>
#include <arch/acpigen.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pci_def.h>
#include <sar.h>
#include <string.h>
#include <wrdd.h>
#include "generic_wifi.h"
/* WRDS Spec Revision */
#define WRDS_REVISION 0x0
/* EWRD Spec Revision */
#define EWRD_REVISION 0x0
/* WRDS Domain type */
#define WRDS_DOMAIN_TYPE_WIFI 0x7
/* EWRD Domain type */
#define EWRD_DOMAIN_TYPE_WIFI 0x7
/* WGDS Domain type */
#define WGDS_DOMAIN_TYPE_WIFI 0x7
/*
* WIFI ACPI NAME = "WF" + hex value of last 8 bits of dev_path_encode + '\0'
* The above representation returns unique and consistent name every time
* generate_wifi_acpi_name is invoked. The last 8 bits of dev_path_encode is
* chosen since it contains the bus address of the device.
*/
#define WIFI_ACPI_NAME_MAX_LEN 5
__weak
int get_wifi_sar_limits(struct wifi_sar_limits *sar_limits)
{
return -1;
}
static void emit_sar_acpi_structures(void)
{
int i, j, package_size;
struct wifi_sar_limits sar_limits;
struct wifi_sar_delta_table *wgds;
/* Retrieve the sar limits data */
if (get_wifi_sar_limits(&sar_limits) < 0) {
printk(BIOS_ERR, "Error: failed from getting SAR limits!\n");
return;
}
/*
* Name ("WRDS", Package () {
* Revision,
* Package () {
* Domain Type, // 0x7:WiFi
* WiFi SAR BIOS, // BIOS SAR Enable/disable
* SAR Table Set // Set#1 of SAR Table (10 bytes)
* }
* })
*/
acpigen_write_name("WRDS");
acpigen_write_package(2);
acpigen_write_dword(WRDS_REVISION);
/* Emit 'Domain Type' + 'WiFi SAR BIOS' + 10 bytes for Set#1 */
package_size = 1 + 1 + BYTES_PER_SAR_LIMIT;
acpigen_write_package(package_size);
acpigen_write_dword(WRDS_DOMAIN_TYPE_WIFI);
acpigen_write_dword(CONFIG(SAR_ENABLE));
for (i = 0; i < BYTES_PER_SAR_LIMIT; i++)
acpigen_write_byte(sar_limits.sar_limit[0][i]);
acpigen_pop_len();
acpigen_pop_len();
/*
* Name ("EWRD", Package () {
* Revision,
* Package () {
* Domain Type, // 0x7:WiFi
* Dynamic SAR Enable, // Dynamic SAR Enable/disable
* Extended SAR sets, // Number of optional SAR table sets
* SAR Table Set, // Set#2 of SAR Table (10 bytes)
* SAR Table Set, // Set#3 of SAR Table (10 bytes)
* SAR Table Set // Set#4 of SAR Table (10 bytes)
* }
* })
*/
acpigen_write_name("EWRD");
acpigen_write_package(2);
acpigen_write_dword(EWRD_REVISION);
/*
* Emit 'Domain Type' + "Dynamic SAR Enable' + 'Extended SAR sets'
* + number of bytes for Set#2 & 3 & 4
*/
package_size = 1 + 1 + 1 + (NUM_SAR_LIMITS - 1) * BYTES_PER_SAR_LIMIT;
acpigen_write_package(package_size);
acpigen_write_dword(EWRD_DOMAIN_TYPE_WIFI);
acpigen_write_dword(CONFIG(DSAR_ENABLE));
acpigen_write_dword(CONFIG_DSAR_SET_NUM);
for (i = 1; i < NUM_SAR_LIMITS; i++)
for (j = 0; j < BYTES_PER_SAR_LIMIT; j++)
acpigen_write_byte(sar_limits.sar_limit[i][j]);
acpigen_pop_len();
acpigen_pop_len();
if (!CONFIG(GEO_SAR_ENABLE))
return;
/*
* Name ("WGDS", Package() {
* Revision,
* Package() {
* DomainType, // 0x7:WiFi
* WgdsWiFiSarDeltaGroup1PowerMax1, // Group 1 FCC 2400 Max
* WgdsWiFiSarDeltaGroup1PowerChainA1, // Group 1 FCC 2400 A Offset
* WgdsWiFiSarDeltaGroup1PowerChainB1, // Group 1 FCC 2400 B Offset
* WgdsWiFiSarDeltaGroup1PowerMax2, // Group 1 FCC 5200 Max
* WgdsWiFiSarDeltaGroup1PowerChainA2, // Group 1 FCC 5200 A Offset
* WgdsWiFiSarDeltaGroup1PowerChainB2, // Group 1 FCC 5200 B Offset
* WgdsWiFiSarDeltaGroup2PowerMax1, // Group 2 EC Jap 2400 Max
* WgdsWiFiSarDeltaGroup2PowerChainA1, // Group 2 EC Jap 2400 A Offset
* WgdsWiFiSarDeltaGroup2PowerChainB1, // Group 2 EC Jap 2400 B Offset
* WgdsWiFiSarDeltaGroup2PowerMax2, // Group 2 EC Jap 5200 Max
* WgdsWiFiSarDeltaGroup2PowerChainA2, // Group 2 EC Jap 5200 A Offset
* WgdsWiFiSarDeltaGroup2PowerChainB2, // Group 2 EC Jap 5200 B Offset
* WgdsWiFiSarDeltaGroup3PowerMax1, // Group 3 ROW 2400 Max
* WgdsWiFiSarDeltaGroup3PowerChainA1, // Group 3 ROW 2400 A Offset
* WgdsWiFiSarDeltaGroup3PowerChainB1, // Group 3 ROW 2400 B Offset
* WgdsWiFiSarDeltaGroup3PowerMax2, // Group 3 ROW 5200 Max
* WgdsWiFiSarDeltaGroup3PowerChainA2, // Group 3 ROW 5200 A Offset
* WgdsWiFiSarDeltaGroup3PowerChainB2, // Group 3 ROW 5200 B Offset
* }
* })
*/
wgds = &sar_limits.wgds;
acpigen_write_name("WGDS");
acpigen_write_package(2);
acpigen_write_dword(wgds->version);
/* Emit 'Domain Type' +
* Group specific delta of power (6 bytes * NUM_WGDS_SAR_GROUPS)
*/
package_size = sizeof(sar_limits.wgds.group) + 1;
acpigen_write_package(package_size);
acpigen_write_dword(WGDS_DOMAIN_TYPE_WIFI);
for (i = 0; i < SAR_NUM_WGDS_GROUPS; i++) {
acpigen_write_byte(wgds->group[i].power_max_2400mhz);
acpigen_write_byte(wgds->group[i].power_chain_a_2400mhz);
acpigen_write_byte(wgds->group[i].power_chain_b_2400mhz);
acpigen_write_byte(wgds->group[i].power_max_5200mhz);
acpigen_write_byte(wgds->group[i].power_chain_a_5200mhz);
acpigen_write_byte(wgds->group[i].power_chain_b_5200mhz);
}
acpigen_pop_len();
acpigen_pop_len();
}
void generic_wifi_fill_ssdt(struct device *dev,
const struct generic_wifi_config *config)
{
const char *path;
u32 address;
if (!dev->enabled)
return;
path = acpi_device_path(dev->bus->dev);
if (!path)
return;
/* Device */
acpigen_write_scope(path);
acpigen_write_device(acpi_device_name(dev));
acpigen_write_name_integer("_UID", 0);
if (dev->chip_ops)
acpigen_write_name_string("_DDN", dev->chip_ops->name);
/* Address */
address = PCI_SLOT(dev->path.pci.devfn) & 0xffff;
address <<= 16;
address |= PCI_FUNC(dev->path.pci.devfn) & 0xffff;
acpigen_write_name_dword("_ADR", address);
/* Wake capabilities */
if (config)
acpigen_write_PRW(config->wake, config->maxsleep);
/* Fill regulatory domain structure */
if (CONFIG(HAVE_REGULATORY_DOMAIN)) {
/*
* Name ("WRDD", Package () {
* WRDD_REVISION, // Revision
* Package () {
* WRDD_DOMAIN_TYPE_WIFI, // Domain Type, 7:WiFi
* wifi_regulatory_domain() // Country Identifier
* }
* })
*/
acpigen_write_name("WRDD");
acpigen_write_package(2);
acpigen_write_integer(WRDD_REVISION);
acpigen_write_package(2);
acpigen_write_dword(WRDD_DOMAIN_TYPE_WIFI);
acpigen_write_dword(wifi_regulatory_domain());
acpigen_pop_len();
acpigen_pop_len();
}
/* Fill Wifi sar related ACPI structures */
if (CONFIG(USE_SAR))
emit_sar_acpi_structures();
acpigen_pop_len(); /* Device */
acpigen_pop_len(); /* Scope */
printk(BIOS_INFO, "%s.%s: %s %s\n", path, acpi_device_name(dev),
dev->chip_ops ? dev->chip_ops->name : "", dev_path(dev));
}
const char *generic_wifi_acpi_name(const struct device *dev)
{
static char wifi_acpi_name[WIFI_ACPI_NAME_MAX_LEN];
snprintf(wifi_acpi_name, sizeof(wifi_acpi_name), "WF%02x",
(dev_path_encode(dev) & 0xff));
return wifi_acpi_name;
}

51
src/drivers/wifi/generic_wifi.h Normal file
View File

@ -0,0 +1,51 @@
/*
* This file is part of the coreboot project.
*
* Copyright 2019 Google LLC
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _GENERIC_WIFI_H_
#define _GENERIC_WIFI_H_
/**
* struct generic_wifi_config - Data structure to contain common wifi config
* @wake: Wake pin for ACPI _PRW
* @maxsleep: Maximum sleep state to wake from
*/
struct generic_wifi_config {
unsigned int wake;
unsigned int maxsleep;
};
/**
* wifi_fill_ssdt() - Fill ACPI SSDT table for WiFi controller
* @dev: Device structure corresponding to WiFi controller.
* @config: Common wifi config required to fill ACPI SSDT table.
*
* This function implements common device operation to help fill ACPI SSDT
* table for WiFi controller.
*/
void generic_wifi_fill_ssdt(struct device *dev,
const struct generic_wifi_config *config);
/**
* wifi_acpi_name() - Get ACPI name for WiFi controller
* @dev: Device structure corresponding to WiFi controller.
*
* This function implements common device operation to get the ACPI name for
* WiFi controller.
*
* Return: string representing the ACPI name for WiFi controller.
*/
const char *generic_wifi_acpi_name(const struct device *dev);
#endif /* _GENERIC_WIFI_H_ */