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authorEdward O'Callaghan <quasisec@google.com>2020-01-21 21:01:32 +1100
committerPatrick Georgi <pgeorgi@google.com>2020-01-30 11:46:23 +0000
commitb765fa6e4789a160cd3fc543e6f659c333a17110 (patch)
tree9126d77ff30e4abd79c0e81c1af20abf71b5e53b
parent7e2625587d11209bdecbeffda3267b2336477b78 (diff)
downloadcoreboot-b765fa6e4789a160cd3fc543e6f659c333a17110.tar.xz
drivers/net/r8168: Add SSDT Power Resource Methods
Turns out when going into S0ix we want the kernel to toggle de-assert to 0 for the ISOLATE# pin on the NIC for S0ix not to be woken by PCIe traffic on PCH. Upon resume the ISOLATE# pin on the NIC is then re-asserted for it to become lively again. V.2: Ensure reset_gpio && enable_gpio are optional. BUG=b:147026979 BRANCH=none TEST=Boot puff and do 100 cycles of S0ix. Change-Id: I3ae8dc30f45f55eec23f45e7b5fbc67a4542f87d Signed-off-by: Edward O'Callaghan <quasisec@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/38494 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
-rw-r--r--src/drivers/net/chip.h12
-rw-r--r--src/drivers/net/r8168.c10
2 files changed, 22 insertions, 0 deletions
diff --git a/src/drivers/net/chip.h b/src/drivers/net/chip.h
index 430bc334a5..249b80f740 100644
--- a/src/drivers/net/chip.h
+++ b/src/drivers/net/chip.h
@@ -15,10 +15,22 @@
#define __DRIVERS_R8168_CHIP_H__
#include <stdint.h>
+#include <arch/acpi_device.h>
struct drivers_net_config {
uint16_t customized_leds;
unsigned int wake; /* Wake pin for ACPI _PRW */
+
+ /* Does the device have a power resource? */
+ bool has_power_resource;
+
+ /* GPIO used to stop operation of device. */
+ struct acpi_gpio stop_gpio;
+ /* Delay to be inserted after disabling stop. */
+ unsigned int stop_delay_ms;
+ /* Delay to be inserted after enabling stop. */
+ unsigned int stop_off_delay_ms;
+
/*
* There maybe many NIC cards in a system.
* This parameter is for driver to identify what
diff --git a/src/drivers/net/r8168.c b/src/drivers/net/r8168.c
index 1bca8799aa..07069aa88b 100644
--- a/src/drivers/net/r8168.c
+++ b/src/drivers/net/r8168.c
@@ -317,6 +317,16 @@ static void r8168_net_fill_ssdt(struct device *dev)
if (dev->chip_ops)
acpigen_write_name_string("_DDN", dev->chip_ops->name);
+ /* Power Resource */
+ if (config->has_power_resource) {
+ const struct acpi_power_res_params power_res_params = {
+ .stop_gpio = &config->stop_gpio,
+ .stop_delay_ms = config->stop_delay_ms,
+ .stop_off_delay_ms = config->stop_off_delay_ms
+ };
+ acpi_device_add_power_res(&power_res_params);
+ }
+
/* Address */
address = PCI_SLOT(dev->path.pci.devfn) & 0xffff;
address <<= 16;