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Date: Fri, 13 May 2016 16:19:16 +0800
From: Yisen Zhuang <Yisen.Zhuang@...wei.com>
To: <davem@...emloft.net>, <rjw@...ysocki.net>, <lenb@...nel.org>
CC: <arnd@...db.de>, <andriy.shevchenko@...ux.intel.com>,
<andrew@...n.ch>, <geliangtang@....com>, <ivecera@...hat.com>,
<fengguang.wu@...el.com>, <charles.chenxin@...wei.com>,
<haifeng.wei@...wei.com>, <netdev@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <linuxarm@...wei.com>
Subject: [patch net-next 10/11] net: hns: implement the reset sequence by asl
From: Kejian Yan <yankejian@...wei.com>
The reset sequence is implemented in BIOS, the kernel can call _DSM
method help to call the implementation in ACPI case. Here is a patch
to do that.
Signed-off-by: Kejian Yan <yankejian@...wei.com>
Signed-off-by: Yisen Zhuang <Yisen.Zhuang@...wei.com>
---
drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c | 113 +++++++++++++++++++++
1 file changed, 113 insertions(+)
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
index ed96d7b..9edf4f7 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
@@ -12,6 +12,27 @@
#include "hns_dsaf_ppe.h"
#include "hns_dsaf_reg.h"
+enum _dsm_op_index {
+ HNS_OP_RESET_FUNC = 0x1,
+ HNS_OP_SERDES_LP_FUNC = 0x2,
+ HNS_OP_LED_SET_FUNC = 0x3,
+ HNS_OP_GET_PORT_TYPE_FUNC = 0x4,
+ HNS_OP_GET_SFP_STAT_FUNC = 0x5,
+};
+
+enum _dsm_rst_type {
+ HNS_DSAF_RESET_FUNC = 0x1,
+ HNS_PPE_RESET_FUNC = 0x2,
+ HNS_XGE_CORE_RESET_FUNC = 0x3,
+ HNS_XGE_RESET_FUNC = 0x4,
+ HNS_GE_RESET_FUNC = 0x5,
+};
+
+const u8 hns_dsaf_acpi_dsm_uuid[] = {
+ 0x1A, 0xAA, 0x85, 0x1A, 0x93, 0xE2, 0x5E, 0x41,
+ 0x8E, 0x28, 0x8D, 0x69, 0x0A, 0x0F, 0x82, 0x0A
+};
+
static void dsaf_write_sub(struct dsaf_device *dsaf_dev, u32 reg, u32 val)
{
if (dsaf_dev->sub_ctrl)
@@ -109,6 +130,34 @@ int cpld_set_led_id(struct hns_mac_cb *mac_cb,
#define RESET_REQ_OR_DREQ 1
+static void hns_dsaf_acpi_srst_by_port(struct dsaf_device *dsaf_dev, u8 op_type,
+ u32 port_type, u32 port, u32 val)
+{
+ union acpi_object *obj;
+ union acpi_object obj_args[3], argv4;
+
+ obj_args[0].integer.type = ACPI_TYPE_INTEGER;
+ obj_args[0].integer.value = port_type;
+ obj_args[1].integer.type = ACPI_TYPE_INTEGER;
+ obj_args[1].integer.value = port;
+ obj_args[2].integer.type = ACPI_TYPE_INTEGER;
+ obj_args[2].integer.value = val;
+
+ argv4.type = ACPI_TYPE_PACKAGE;
+ argv4.package.count = 3;
+ argv4.package.elements = obj_args;
+
+ obj = acpi_evaluate_dsm(ACPI_HANDLE(dsaf_dev->dev),
+ hns_dsaf_acpi_dsm_uuid, 0, op_type, &argv4);
+ if (!obj) {
+ dev_warn(dsaf_dev->dev, "reset port_type%d port%d fail!",
+ port_type, port);
+ return;
+ }
+
+ ACPI_FREE(obj);
+}
+
void hns_dsaf_rst(struct dsaf_device *dsaf_dev, u32 val)
{
u32 xbar_reg_addr;
@@ -125,6 +174,10 @@ void hns_dsaf_rst(struct dsaf_device *dsaf_dev, u32 val)
dsaf_write_sub(dsaf_dev, xbar_reg_addr, RESET_REQ_OR_DREQ);
dsaf_write_sub(dsaf_dev, nt_reg_addr, RESET_REQ_OR_DREQ);
+ } else if (is_acpi_device_node(dsaf_dev->dev->fwnode)) {
+ hns_dsaf_acpi_srst_by_port(dsaf_dev, HNS_OP_RESET_FUNC,
+ HNS_DSAF_RESET_FUNC,
+ 0, val);
}
}
@@ -147,6 +200,9 @@ void hns_dsaf_xge_srst_by_port(struct dsaf_device *dsaf_dev, u32 port, u32 val)
reg_addr = DSAF_SUB_SC_XGE_RESET_DREQ_REG;
dsaf_write_sub(dsaf_dev, reg_addr, reg_val);
+ } else if (is_acpi_device_node(dsaf_dev->dev->fwnode)) {
+ hns_dsaf_acpi_srst_by_port(dsaf_dev, HNS_OP_RESET_FUNC,
+ HNS_XGE_RESET_FUNC, port, val);
}
}
@@ -168,6 +224,9 @@ void hns_dsaf_xge_core_srst_by_port(struct dsaf_device *dsaf_dev,
reg_addr = DSAF_SUB_SC_XGE_RESET_DREQ_REG;
dsaf_write_sub(dsaf_dev, reg_addr, reg_val);
+ } else if (is_acpi_device_node(dsaf_dev->dev->fwnode)) {
+ hns_dsaf_acpi_srst_by_port(dsaf_dev, HNS_OP_RESET_FUNC,
+ HNS_XGE_CORE_RESET_FUNC, port, val);
}
}
@@ -229,6 +288,9 @@ void hns_dsaf_ge_srst_by_port(struct dsaf_device *dsaf_dev, u32 port, u32 val)
reg_val_2);
}
}
+ } else if (is_acpi_device_node(dsaf_dev->dev->fwnode)) {
+ hns_dsaf_acpi_srst_by_port(dsaf_dev, HNS_OP_RESET_FUNC,
+ HNS_GE_RESET_FUNC, port, val);
}
}
@@ -248,6 +310,9 @@ void hns_ppe_srst_by_port(struct dsaf_device *dsaf_dev, u32 port, u32 val)
reg_addr = DSAF_SUB_SC_PPE_RESET_DREQ_REG;
dsaf_write_sub(dsaf_dev, reg_addr, reg_val);
+ } else if (is_acpi_device_node(dsaf_dev->dev->fwnode)) {
+ hns_dsaf_acpi_srst_by_port(dsaf_dev, HNS_OP_RESET_FUNC,
+ HNS_PPE_RESET_FUNC, port, val);
}
}
@@ -313,6 +378,30 @@ phy_interface_t hns_mac_get_phy_if(struct hns_mac_cb *mac_cb)
phy_if = PHY_INTERFACE_MODE_XGMII;
else
phy_if = PHY_INTERFACE_MODE_SGMII;
+ } else if (is_acpi_device_node(mac_cb->dev->fwnode)) {
+ union acpi_object *obj;
+ union acpi_object obj_args, argv4;
+
+ obj_args.integer.type = ACPI_TYPE_INTEGER;
+ obj_args.integer.value = mac_cb->mac_id;
+
+ argv4.type = ACPI_TYPE_PACKAGE,
+ argv4.package.count = 1,
+ argv4.package.elements = &obj_args,
+
+ obj = acpi_evaluate_dsm(ACPI_HANDLE(mac_cb->dev),
+ hns_dsaf_acpi_dsm_uuid, 0,
+ HNS_OP_GET_PORT_TYPE_FUNC, &argv4);
+
+ if (!obj || obj->type != ACPI_TYPE_INTEGER)
+ return phy_if;
+
+ phy_if = obj->integer.value ?
+ PHY_INTERFACE_MODE_XGMII : PHY_INTERFACE_MODE_SGMII;
+
+ dev_dbg(mac_cb->dev, "mac_id=%d, phy_if=%d\n", mac_id, phy_if);
+
+ ACPI_FREE(obj);
}
return phy_if;
@@ -380,6 +469,30 @@ int hns_mac_config_sds_loopback(struct hns_mac_cb *mac_cb, u8 en)
dsaf_set_reg_field(base_addr, reg_offset, 1ull << 10,
10, !!en);
}
+ } else if (is_acpi_device_node(dsaf_dev->dev->fwnode)) {
+ union acpi_object *obj;
+ union acpi_object obj_args[3], argv4;
+
+ obj_args[0].integer.type = ACPI_TYPE_INTEGER;
+ obj_args[0].integer.value = mac_cb->mac_id;
+ obj_args[1].integer.type = ACPI_TYPE_INTEGER;
+ obj_args[1].integer.value = !!en;
+
+ argv4.type = ACPI_TYPE_PACKAGE;
+ argv4.package.count = 2;
+ argv4.package.elements = obj_args;
+
+ obj = acpi_evaluate_dsm(ACPI_HANDLE(dsaf_dev->dev),
+ hns_dsaf_acpi_dsm_uuid, 0,
+ HNS_OP_SERDES_LP_FUNC, &argv4);
+ if (!obj) {
+ dev_warn(dsaf_dev->dev, "set port%d serdes lp fail!",
+ mac_cb->mac_id);
+
+ return -ENOTSUPP;
+ }
+
+ ACPI_FREE(obj);
}
return 0;
--
1.9.1
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