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drivers/net: add SSDT ACPI declaration and WOL feature 

This patch adds SSDT ACPI generator and declares _UID, _HID, _DDN and
also _PRW for WOL feature. Besides, adds a wake variable in chip
information.

BUG=b:69290148
BRANCH=None
TEST=Add register "wake" = "GPE0_PCI_EXP" in devicetree under r8168
     chip driver && dump SSDT to make sure _UID, _HID, _DDN and _PRW
     are filled correctly && put system into S3 && sudo etherwake -i
     eth0 $MAC to make sure the system could be woken up by WOL package.

Change-Id: Ibc9115e8a08ba2bfcb3ee1e34c73cf1976a6ba2d
Signed-off-by: Gaggery Tsai <gaggery.tsai@intel.com>
Reviewed-on: https://review.coreboot.org/22480
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Gaggery Tsai 2017-11-16 17:21:23 +08:00 committed by Furquan Shaikh
parent 73add175cd
commit 6919a9376e
2 changed files with 53 additions and 0 deletions
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1
src/drivers/net/chip.h
View File

@ -16,6 +16,7 @@
struct drivers_net_config {
uint16_t customized_leds;
unsigned wake; /* Wake pin for ACPI _PRW */
};
#endif /* __DRIVERS_R8168_CHIP_H__ */

52
src/drivers/net/r8168.c
View File

@ -22,6 +22,8 @@
*/
#include <cbfs.h>
#include <arch/acpi_device.h>
#include <arch/acpigen.h>
#include <string.h>
#include <arch/io.h>
#include <console/console.h>
@ -268,12 +270,58 @@ static void r8168_init(struct device *dev)
r8168_set_customized_led(dev, io_base);
}
#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES)
#define R8168_ACPI_HID "R8168"
static void r8168_net_fill_ssdt(struct device *dev)
{
struct drivers_net_config *config = dev->chip_info;
const char *path = acpi_device_path(dev->bus->dev);
u32 address;
if (!path || !config)
return;
/* Device */
acpigen_write_scope(path);
acpigen_write_device(acpi_device_name(dev));
acpigen_write_name_string("_HID", R8168_ACPI_HID);
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->wake)
acpigen_write_PRW(config->wake, 3);
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 *r8168_net_acpi_name(const struct device *dev)
{
return "RLTK";
}
#endif
static struct device_operations r8168_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = r8168_init,
.scan_bus = 0,
#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES)
.acpi_name = &r8168_net_acpi_name,
.acpi_fill_ssdt_generator = &r8168_net_fill_ssdt,
#endif
};
static const struct pci_driver r8168_driver __pci_driver = {
@ -281,3 +329,7 @@ static const struct pci_driver r8168_driver __pci_driver = {
.vendor = 0x10ec,
.device = 0x8168,
};
struct chip_operations drivers_net_ops = {
CHIP_NAME("Realtek r8168")
};