moon - Security Management Module

Age	Commit message (Expand)	Author	Files	Lines
2017-12-18	Update the test directory structure	Thomas Duval	5	-607/+724
2017-12-11	Add unittests for moon_authz	Thomas Duval	4	-0/+685

/* * Copyright (C) 2004-2013 Synopsys, Inc. (www.synopsys.com) * * MDIO implementation for ARC EMAC */ #include <linux/delay.h> #include <linux/of_mdio.h> #include <linux/platform_device.h> #include "emac.h" /* Number of seconds we wait for "MDIO complete" flag to appear */ #define ARC_MDIO_COMPLETE_POLL_COUNT 1 /** * arc_mdio_complete_wait - Waits until MDIO transaction is completed. * @priv: Pointer to ARC EMAC private data structure. * * returns: 0 on success, -ETIMEDOUT on a timeout. */ static int arc_mdio_complete_wait(struct arc_emac_priv *priv) { unsigned int i; for (i = 0; i < ARC_MDIO_COMPLETE_POLL_COUNT * 40; i++) { unsigned int status = arc_reg_get(priv, R_STATUS); status &= MDIO_MASK; if (status) { /* Reset "MDIO complete" flag */ arc_reg_set(priv, R_STATUS, status); return 0; } msleep(25); } return -ETIMEDOUT; } /** * arc_mdio_read - MDIO interface read function. * @bus: Pointer to MII bus structure. * @phy_addr: Address of the PHY device. * @reg_num: PHY register to read. * * returns: The register contents on success, -ETIMEDOUT on a timeout. * * Reads the contents of the requested register from the requested PHY * address. */ static int arc_mdio_read(struct mii_bus *bus, int phy_addr, int reg_num) { struct arc_emac_priv *priv = bus->priv; unsigned int value; int error; arc_reg_set(priv, R_MDIO, 0x60020000 | (phy_addr << 23) | (reg_num << 18)); error = arc_mdio_complete_wait(priv); if (error < 0) return error; value = arc_reg_get(priv, R_MDIO) & 0xffff; dev_dbg(priv->dev, "arc_mdio_read(phy_addr=%i, reg_num=%x) = %x\n", phy_addr, reg_num, value); return value; } /** * arc_mdio_write - MDIO interface write function. * @bus: Pointer to MII bus structure. * @phy_addr: Address of the PHY device. * @reg_num: PHY register to write to. * @value: Value to be written into the register. * * returns: 0 on success, -ETIMEDOUT on a timeout. * * Writes the value to the requested register. */ static int arc_mdio_write(struct mii_bus *bus, int phy_addr, int reg_num, u16 value) { struct arc_emac_priv *priv = bus->priv; dev_dbg(priv->dev, "arc_mdio_write(phy_addr=%i, reg_num=%x, value=%x)\n", phy_addr, reg_num, value); arc_reg_set(priv, R_MDIO, 0x50020000 | (phy_addr << 23) | (reg_num << 18) | value); return arc_mdio_complete_wait(priv); } /** * arc_mdio_probe - MDIO probe function. * @priv: Pointer to ARC EMAC private data structure. * * returns: 0 on success, -ENOMEM when mdiobus_alloc * (to allocate memory for MII bus structure) fails. * * Sets up and registers the MDIO interface. */ int arc_mdio_probe(struct arc_emac_priv *priv) { struct mii_bus *bus; int error; bus = mdiobus_alloc(); if (!bus) return -ENOMEM; priv->bus = bus; bus->priv = priv; bus->parent = priv->dev; bus->name = "Synopsys MII Bus", bus->read = &arc_mdio_read; bus->write = &arc_mdio_write; snprintf(bus->id, MII_BUS_ID_SIZE, "%s", bus->name); error = of_mdiobus_register(bus, priv->dev->of_node); if (error) { dev_err(priv->dev, "cannot register MDIO bus %s\n", bus->name); mdiobus_free(bus); return error; } return 0; } /** * arc_mdio_remove - MDIO remove function. * @priv: Pointer to ARC EMAC private data structure. * * Unregisters the MDIO and frees any associate memory for MII bus. */ int arc_mdio_remove(struct arc_emac_priv *priv) { mdiobus_unregister(priv->bus); mdiobus_free(priv->bus); priv->bus = NULL; return 0; }