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@xxxxxxxxxx> Signed-off-by: Yisen Zhuang <Yisen.Zhuang@xxxxxxxxxx> --- change log: v2: use a serial function to implement the reset sequence v1: first submit link: https://lkml.org/lkml/2016/5/13/94 --- drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c | 167 +++++++++++++++++++++ 1 file changed, 167 insertions(+) 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 --- 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; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
