net: hns: implement the miscellaneous operation by asl

The miscellaneous operation 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@huawei.com>
Signed-off-by: Yisen Zhuang <Yisen.Zhuang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
index f21177b..96cb628 100644 (file)
--- 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 @@ static 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);
+}
+
 static void hns_dsaf_rst(struct dsaf_device *dsaf_dev, bool dereset)
 {
        u32 xbar_reg_addr;
@@ -126,6 +175,13 @@ static void hns_dsaf_rst(struct dsaf_device *dsaf_dev, bool dereset)
        dsaf_write_sub(dsaf_dev, nt_reg_addr, RESET_REQ_OR_DREQ);
 }
 
+static void hns_dsaf_rst_acpi(struct dsaf_device *dsaf_dev, bool dereset)
+{
+       hns_dsaf_acpi_srst_by_port(dsaf_dev, HNS_OP_RESET_FUNC,
+                                  HNS_DSAF_RESET_FUNC,
+                                  0, dereset);
+}
+
 static void hns_dsaf_xge_srst_by_port(struct dsaf_device *dsaf_dev, u32 port,
                                      bool dereset)
 {
@@ -146,6 +202,13 @@ static void hns_dsaf_xge_srst_by_port(struct dsaf_device *dsaf_dev, u32 port,
        dsaf_write_sub(dsaf_dev, reg_addr, reg_val);
 }
 
+static void hns_dsaf_xge_srst_by_port_acpi(struct dsaf_device *dsaf_dev,
+                                          u32 port, bool dereset)
+{
+       hns_dsaf_acpi_srst_by_port(dsaf_dev, HNS_OP_RESET_FUNC,
+                                  HNS_XGE_RESET_FUNC, port, dereset);
+}
+
 static void hns_dsaf_xge_core_srst_by_port(struct dsaf_device *dsaf_dev,
                                           u32 port, bool dereset)
 {
@@ -166,6 +229,14 @@ static void hns_dsaf_xge_core_srst_by_port(struct dsaf_device *dsaf_dev,
        dsaf_write_sub(dsaf_dev, reg_addr, reg_val);
 }
 
+static void
+hns_dsaf_xge_core_srst_by_port_acpi(struct dsaf_device *dsaf_dev,
+                                   u32 port, bool dereset)
+{
+       hns_dsaf_acpi_srst_by_port(dsaf_dev, HNS_OP_RESET_FUNC,
+                                  HNS_XGE_CORE_RESET_FUNC, port, dereset);
+}
+
 static void hns_dsaf_ge_srst_by_port(struct dsaf_device *dsaf_dev, u32 port,
                                     bool dereset)
 {
@@ -218,6 +289,13 @@ static void hns_dsaf_ge_srst_by_port(struct dsaf_device *dsaf_dev, u32 port,
        }
 }
 
+static void hns_dsaf_ge_srst_by_port_acpi(struct dsaf_device *dsaf_dev,
+                                         u32 port, bool dereset)
+{
+       hns_dsaf_acpi_srst_by_port(dsaf_dev, HNS_OP_RESET_FUNC,
+                                  HNS_GE_RESET_FUNC, port, dereset);
+}
+
 static void hns_ppe_srst_by_port(struct dsaf_device *dsaf_dev, u32 port,
                                 bool dereset)
 {
@@ -234,11 +312,21 @@ static void hns_ppe_srst_by_port(struct dsaf_device *dsaf_dev, u32 port,
        dsaf_write_sub(dsaf_dev, reg_addr, reg_val);
 }
 
+static void
+hns_ppe_srst_by_port_acpi(struct dsaf_device *dsaf_dev, u32 port, bool dereset)
+{
+       hns_dsaf_acpi_srst_by_port(dsaf_dev, HNS_OP_RESET_FUNC,
+                                  HNS_PPE_RESET_FUNC, port, dereset);
+}
+
 static void hns_ppe_com_srst(struct dsaf_device *dsaf_dev, bool dereset)
 {
        u32 reg_val;
        u32 reg_addr;
 
+       if (!(dev_of_node(dsaf_dev->dev)))
+               return;
+
        if (!HNS_DSAF_IS_DEBUG(dsaf_dev)) {
                reg_val = RESET_REQ_OR_DREQ;
                if (!dereset)
@@ -295,6 +383,36 @@ static phy_interface_t hns_mac_get_phy_if(struct hns_mac_cb *mac_cb)
        return phy_if;
 }
 
+static phy_interface_t hns_mac_get_phy_if_acpi(struct hns_mac_cb *mac_cb)
+{
+       phy_interface_t phy_if = PHY_INTERFACE_MODE_NA;
+       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_cb->mac_id, phy_if);
+
+       ACPI_FREE(obj);
+
+       return phy_if;
+}
+
 int hns_mac_get_sfp_prsnt(struct hns_mac_cb *mac_cb, int *sfp_prsnt)
 {
        if (!mac_cb->cpld_ctrl)
@@ -354,6 +472,36 @@ static int hns_mac_config_sds_loopback(struct hns_mac_cb *mac_cb, bool en)
        return 0;
 }
 
+static int
+hns_mac_config_sds_loopback_acpi(struct hns_mac_cb *mac_cb, bool en)
+{
+       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(mac_cb->dsaf_dev->dev),
+                               hns_dsaf_acpi_dsm_uuid, 0,
+                               HNS_OP_SERDES_LP_FUNC, &argv4);
+       if (!obj) {
+               dev_warn(mac_cb->dsaf_dev->dev, "set port%d serdes lp fail!",
+                        mac_cb->mac_id);
+
+               return -ENOTSUPP;
+       }
+
+       ACPI_FREE(obj);
+
+       return 0;
+}
+
 struct dsaf_misc_op *hns_misc_op_get(struct dsaf_device *dsaf_dev)
 {
        struct dsaf_misc_op *misc_op;
@@ -378,6 +526,25 @@ struct dsaf_misc_op *hns_misc_op_get(struct dsaf_device *dsaf_dev)
                misc_op->get_sfp_prsnt = hns_mac_get_sfp_prsnt;
 
                misc_op->cfg_serdes_loopback = hns_mac_config_sds_loopback;
+       } else if (is_acpi_node(dsaf_dev->dev->fwnode)) {
+               misc_op->cpld_set_led = hns_cpld_set_led;
+               misc_op->cpld_reset_led = cpld_led_reset;
+               misc_op->cpld_set_led_id = cpld_set_led_id;
+
+               misc_op->dsaf_reset = hns_dsaf_rst_acpi;
+               misc_op->xge_srst = hns_dsaf_xge_srst_by_port_acpi;
+               misc_op->xge_core_srst = hns_dsaf_xge_core_srst_by_port_acpi;
+               misc_op->ge_srst = hns_dsaf_ge_srst_by_port_acpi;
+               misc_op->ppe_srst = hns_ppe_srst_by_port_acpi;
+               misc_op->ppe_comm_srst = hns_ppe_com_srst;
+
+               misc_op->get_phy_if = hns_mac_get_phy_if_acpi;
+               misc_op->get_sfp_prsnt = hns_mac_get_sfp_prsnt;
+
+               misc_op->cfg_serdes_loopback = hns_mac_config_sds_loopback_acpi;
+       } else {
+               devm_kfree(dsaf_dev->dev, (void *)misc_op);
+               misc_op = NULL;
        }
 
        return (void *)misc_op;