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Commit f00ef863 authored by Kejian Yan's avatar Kejian Yan Committed by David S. Miller
Browse files

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: default avatarKejian Yan <yankejian@huawei.com>
Signed-off-by: default avatarYisen Zhuang <Yisen.Zhuang@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 1d1afa2e

drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c

+167 −0
Original line number Diff line number Diff line
@@ -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;