From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-pf1-x444.google.com ([2607:f8b0:4864:20::444]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gBsWX-000739-9F for barebox@lists.infradead.org; Mon, 15 Oct 2018 02:23:52 +0000 Received: by mail-pf1-x444.google.com with SMTP id r64-v6so8857732pfb.13 for ; Sun, 14 Oct 2018 19:22:14 -0700 (PDT) From: Andrey Smirnov Date: Sun, 14 Oct 2018 19:21:23 -0700 Message-Id: <20181015022125.24020-21-andrew.smirnov@gmail.com> In-Reply-To: <20181015022125.24020-1-andrew.smirnov@gmail.com> References: <20181015022125.24020-1-andrew.smirnov@gmail.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH v3 20/22] net: phy: Add basic driver for MV88E6XXX switches from Marvell To: barebox@lists.infradead.org Cc: Andrey Smirnov Port a very abridged version of MV88E6XXX DSA driver from Linux kernel. Currently only internal MDIO bus connected to switch PHYs is exposed. Signed-off-by: Andrey Smirnov net: phy: mv88e6xxx: Expose internal MDIO bus --- drivers/net/phy/Kconfig | 6 + drivers/net/phy/Makefile | 1 + drivers/net/phy/mv88e6xxx/Makefile | 5 + drivers/net/phy/mv88e6xxx/chip.c | 723 ++++++++++++++++++++++++++++ drivers/net/phy/mv88e6xxx/chip.h | 61 +++ drivers/net/phy/mv88e6xxx/global2.c | 124 +++++ drivers/net/phy/mv88e6xxx/global2.h | 41 ++ drivers/net/phy/mv88e6xxx/port.c | 20 + drivers/net/phy/mv88e6xxx/port.h | 89 ++++ 9 files changed, 1070 insertions(+) create mode 100644 drivers/net/phy/mv88e6xxx/Makefile create mode 100644 drivers/net/phy/mv88e6xxx/chip.c create mode 100644 drivers/net/phy/mv88e6xxx/chip.h create mode 100644 drivers/net/phy/mv88e6xxx/global2.c create mode 100644 drivers/net/phy/mv88e6xxx/global2.h create mode 100644 drivers/net/phy/mv88e6xxx/port.c create mode 100644 drivers/net/phy/mv88e6xxx/port.h diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index 79fb917ee..3b1a6ea7e 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -48,6 +48,12 @@ config SMSC_PHY ---help--- Currently supports the LAN83C185, LAN8187 and LAN8700 PHYs +config NET_DSA_MV88E6XXX + tristate "Marvell 88E6xxx Ethernet switch fabric support" + help + This driver adds support for most of the Marvell 88E6xxx models of + Ethernet switch chips, except 88E6060. + comment "MII bus device drivers" config MDIO_MVEBU diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile index 4424054d9..e4d9ec65a 100644 --- a/drivers/net/phy/Makefile +++ b/drivers/net/phy/Makefile @@ -7,6 +7,7 @@ obj-$(CONFIG_MARVELL_PHY) += marvell.o obj-$(CONFIG_MICREL_PHY) += micrel.o obj-$(CONFIG_NATIONAL_PHY) += national.o obj-$(CONFIG_SMSC_PHY) += smsc.o +obj-$(CONFIG_NET_DSA_MV88E6XXX) += mv88e6xxx/ obj-$(CONFIG_MDIO_MVEBU) += mdio-mvebu.o obj-$(CONFIG_MDIO_BITBANG) += mdio-bitbang.o diff --git a/drivers/net/phy/mv88e6xxx/Makefile b/drivers/net/phy/mv88e6xxx/Makefile new file mode 100644 index 000000000..8c8ba78cd --- /dev/null +++ b/drivers/net/phy/mv88e6xxx/Makefile @@ -0,0 +1,5 @@ +obj-y += mv88e6xxx.o + +mv88e6xxx-objs := chip.o +mv88e6xxx-objs += global2.o +mv88e6xxx-objs += port.o \ No newline at end of file diff --git a/drivers/net/phy/mv88e6xxx/chip.c b/drivers/net/phy/mv88e6xxx/chip.c new file mode 100644 index 000000000..cc4bfc02e --- /dev/null +++ b/drivers/net/phy/mv88e6xxx/chip.c @@ -0,0 +1,723 @@ +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include "chip.h" +#include "global2.h" +#include "port.h" + + +/* List of supported models */ +enum mv88e6xxx_model { + MV88E6085, + MV88E6095, + MV88E6097, + MV88E6123, + MV88E6131, + MV88E6141, + MV88E6161, + MV88E6165, + MV88E6171, + MV88E6172, + MV88E6175, + MV88E6176, + MV88E6185, + MV88E6190, + MV88E6190X, + MV88E6191, + MV88E6240, + MV88E6290, + MV88E6320, + MV88E6321, + MV88E6341, + MV88E6350, + MV88E6351, + MV88E6352, + MV88E6390, + MV88E6390X, +}; + +static const struct mv88e6xxx_ops mv88e6085_ops = { + /* MV88E6XXX_FAMILY_6097 */ + /* FIXME: Was not ported due to lack of HW */ + .phy_read = NULL, + .phy_write = NULL, +}; + +static const struct mv88e6xxx_ops mv88e6095_ops = { + /* MV88E6XXX_FAMILY_6095 */ + /* FIXME: Was not ported due to lack of HW */ + .phy_read = NULL, + .phy_write = NULL, +}; + +static const struct mv88e6xxx_ops mv88e6097_ops = { + /* MV88E6XXX_FAMILY_6097 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_ops mv88e6123_ops = { + /* MV88E6XXX_FAMILY_6165 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_ops mv88e6131_ops = { + /* MV88E6XXX_FAMILY_6185 */ + /* FIXME: Was not ported due to lack of HW */ + .phy_read = NULL, + .phy_write = NULL, +}; + +static const struct mv88e6xxx_ops mv88e6141_ops = { + /* MV88E6XXX_FAMILY_6341 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_ops mv88e6161_ops = { + /* MV88E6XXX_FAMILY_6165 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_ops mv88e6165_ops = { + /* MV88E6XXX_FAMILY_6165 */ + /* FIXME: Was not ported due to lack of HW */ + .phy_read = NULL, + .phy_write = NULL, +}; + +static const struct mv88e6xxx_ops mv88e6171_ops = { + /* MV88E6XXX_FAMILY_6351 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_ops mv88e6172_ops = { + /* MV88E6XXX_FAMILY_6352 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_ops mv88e6175_ops = { + /* MV88E6XXX_FAMILY_6351 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_ops mv88e6176_ops = { + /* MV88E6XXX_FAMILY_6352 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_ops mv88e6185_ops = { + /* MV88E6XXX_FAMILY_6185 */ + /* FIXME: Was not ported due to lack of HW */ + .phy_read = NULL, + .phy_write = NULL, +}; + +static const struct mv88e6xxx_ops mv88e6190_ops = { + /* MV88E6XXX_FAMILY_6390 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_ops mv88e6190x_ops = { + /* MV88E6XXX_FAMILY_6390 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_ops mv88e6191_ops = { + /* MV88E6XXX_FAMILY_6390 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_ops mv88e6240_ops = { + /* MV88E6XXX_FAMILY_6352 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_ops mv88e6290_ops = { + /* MV88E6XXX_FAMILY_6390 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_ops mv88e6320_ops = { + /* MV88E6XXX_FAMILY_6320 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_ops mv88e6321_ops = { + /* MV88E6XXX_FAMILY_6320 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_ops mv88e6341_ops = { + /* MV88E6XXX_FAMILY_6341 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_ops mv88e6350_ops = { + /* MV88E6XXX_FAMILY_6351 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_ops mv88e6351_ops = { + /* MV88E6XXX_FAMILY_6351 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_ops mv88e6352_ops = { + /* MV88E6XXX_FAMILY_6352 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_ops mv88e6390_ops = { + /* MV88E6XXX_FAMILY_6390 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_ops mv88e6390x_ops = { + /* MV88E6XXX_FAMILY_6390 */ + .phy_read = mv88e6xxx_g2_smi_phy_read, + .phy_write = mv88e6xxx_g2_smi_phy_write, +}; + +static const struct mv88e6xxx_info mv88e6xxx_table[] = { + [MV88E6085] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6085, + .family = MV88E6XXX_FAMILY_6097, + .name = "Marvell 88E6085", + .num_ports = 10, + .port_base_addr = 0x10, + .global2_addr = 0x1c, + .ops = &mv88e6085_ops, + }, + + [MV88E6095] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6095, + .family = MV88E6XXX_FAMILY_6095, + .name = "Marvell 88E6095/88E6095F", + .num_ports = 11, + .port_base_addr = 0x10, + .global2_addr = 0x1c, + .ops = &mv88e6095_ops, + }, + + [MV88E6097] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6097, + .family = MV88E6XXX_FAMILY_6097, + .name = "Marvell 88E6097/88E6097F", + .num_ports = 11, + .port_base_addr = 0x10, + .global2_addr = 0x1c, + .ops = &mv88e6097_ops, + }, + + [MV88E6123] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6123, + .family = MV88E6XXX_FAMILY_6165, + .name = "Marvell 88E6123", + .num_ports = 3, + .port_base_addr = 0x10, + .global2_addr = 0x1c, + .ops = &mv88e6123_ops, + }, + + [MV88E6131] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6131, + .family = MV88E6XXX_FAMILY_6185, + .name = "Marvell 88E6131", + .num_ports = 8, + .port_base_addr = 0x10, + .global2_addr = 0x1c, + .ops = &mv88e6131_ops, + }, + + [MV88E6141] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6141, + .family = MV88E6XXX_FAMILY_6341, + .name = "Marvell 88E6341", + .num_ports = 6, + .port_base_addr = 0x10, + .global2_addr = 0x1c, + .ops = &mv88e6141_ops, + }, + + [MV88E6161] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6161, + .family = MV88E6XXX_FAMILY_6165, + .name = "Marvell 88E6161", + .num_ports = 6, + .port_base_addr = 0x10, + .global2_addr = 0x1c, + .ops = &mv88e6161_ops, + }, + + [MV88E6165] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6165, + .family = MV88E6XXX_FAMILY_6165, + .name = "Marvell 88E6165", + .num_ports = 6, + .port_base_addr = 0x10, + .global2_addr = 0x1c, + .ops = &mv88e6165_ops, + }, + + [MV88E6171] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6171, + .family = MV88E6XXX_FAMILY_6351, + .name = "Marvell 88E6171", + .num_ports = 7, + .port_base_addr = 0x10, + .global2_addr = 0x1c, + .ops = &mv88e6171_ops, + }, + + [MV88E6172] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6172, + .family = MV88E6XXX_FAMILY_6352, + .name = "Marvell 88E6172", + .num_ports = 7, + .port_base_addr = 0x10, + .global2_addr = 0x1c, + .ops = &mv88e6172_ops, + }, + + [MV88E6175] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6175, + .family = MV88E6XXX_FAMILY_6351, + .name = "Marvell 88E6175", + .num_ports = 7, + .port_base_addr = 0x10, + .global2_addr = 0x1c, + .ops = &mv88e6175_ops, + }, + + [MV88E6176] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6176, + .family = MV88E6XXX_FAMILY_6352, + .name = "Marvell 88E6176", + .num_ports = 7, + .port_base_addr = 0x10, + .global2_addr = 0x1c, + .ops = &mv88e6176_ops, + }, + + [MV88E6185] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6185, + .family = MV88E6XXX_FAMILY_6185, + .name = "Marvell 88E6185", + .num_ports = 10, + .port_base_addr = 0x10, + .global2_addr = 0x1c, + .ops = &mv88e6185_ops, + }, + + [MV88E6190] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6190, + .family = MV88E6XXX_FAMILY_6390, + .name = "Marvell 88E6190", + .num_ports = 11, /* 10 + Z80 */ + .port_base_addr = 0x0, + .global2_addr = 0x1c, + .ops = &mv88e6190_ops, + }, + + [MV88E6190X] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6190X, + .family = MV88E6XXX_FAMILY_6390, + .name = "Marvell 88E6190X", + .num_ports = 11, /* 10 + Z80 */ + .port_base_addr = 0x0, + .global2_addr = 0x1c, + .ops = &mv88e6190x_ops, + }, + + [MV88E6191] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6191, + .family = MV88E6XXX_FAMILY_6390, + .name = "Marvell 88E6191", + .num_ports = 11, /* 10 + Z80 */ + .port_base_addr = 0x0, + .global2_addr = 0x1c, + .ops = &mv88e6191_ops, + }, + + [MV88E6240] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6240, + .family = MV88E6XXX_FAMILY_6352, + .name = "Marvell 88E6240", + .num_ports = 7, + .port_base_addr = 0x10, + .global2_addr = 0x1c, + .ops = &mv88e6240_ops, + }, + + [MV88E6290] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6290, + .family = MV88E6XXX_FAMILY_6390, + .name = "Marvell 88E6290", + .num_ports = 11, /* 10 + Z80 */ + .port_base_addr = 0x0, + .global2_addr = 0x1c, + .ops = &mv88e6290_ops, + }, + + [MV88E6320] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6320, + .family = MV88E6XXX_FAMILY_6320, + .name = "Marvell 88E6320", + .num_ports = 7, + .port_base_addr = 0x10, + .global2_addr = 0x1c, + .ops = &mv88e6320_ops, + }, + + [MV88E6321] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6321, + .family = MV88E6XXX_FAMILY_6320, + .name = "Marvell 88E6321", + .num_ports = 7, + .port_base_addr = 0x10, + .global2_addr = 0x1c, + .ops = &mv88e6321_ops, + }, + + [MV88E6341] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6341, + .family = MV88E6XXX_FAMILY_6341, + .name = "Marvell 88E6341", + .num_ports = 6, + .port_base_addr = 0x10, + .global2_addr = 0x1c, + .ops = &mv88e6341_ops, + }, + + [MV88E6350] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6350, + .family = MV88E6XXX_FAMILY_6351, + .name = "Marvell 88E6350", + .num_ports = 7, + .port_base_addr = 0x10, + .global2_addr = 0x1c, + .ops = &mv88e6350_ops, + }, + + [MV88E6351] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6351, + .family = MV88E6XXX_FAMILY_6351, + .name = "Marvell 88E6351", + .num_ports = 7, + .port_base_addr = 0x10, + .global2_addr = 0x1c, + .ops = &mv88e6351_ops, + }, + + [MV88E6352] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6352, + .family = MV88E6XXX_FAMILY_6352, + .name = "Marvell 88E6352", + .num_ports = 7, + .port_base_addr = 0x10, + .ops = &mv88e6352_ops, + .global2_addr = 0x1c, + .ops = &mv88e6352_ops, + }, + + [MV88E6390] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6390, + .family = MV88E6XXX_FAMILY_6390, + .name = "Marvell 88E6390", + .num_ports = 11, /* 10 + Z80 */ + .port_base_addr = 0x0, + .global2_addr = 0x1c, + .ops = &mv88e6390_ops, + }, + + [MV88E6390X] = { + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6390X, + .family = MV88E6XXX_FAMILY_6390, + .name = "Marvell 88E6390X", + .num_ports = 11, /* 10 + Z80 */ + .port_base_addr = 0x0, + .global2_addr = 0x1c, + .ops = &mv88e6390x_ops, + }, +}; + +int mv88e6xxx_write(struct mv88e6xxx_chip *chip, int addr, int reg, u16 val) +{ + int ret; + ret = mdiobus_write(chip->parent_miibus, addr, reg, val); + if (ret < 0) + return ret; + + dev_dbg(chip->dev, "<- addr: 0x%.2x reg: 0x%.2x val: 0x%.4x\n", + addr, reg, val); + + return 0; +} + +int mv88e6xxx_read(struct mv88e6xxx_chip *chip, int addr, int reg, u16 *val) +{ + int ret; + + ret = mdiobus_read(chip->parent_miibus, addr, reg); + if (ret < 0) + return ret; + + *val = ret & 0xffff; + + dev_dbg(chip->dev, "-> addr: 0x%.2x reg: 0x%.2x val: 0x%.4x\n", + addr, reg, *val); + + return 0; +} + +int mv88e6xxx_wait(struct mv88e6xxx_chip *chip, int addr, int reg, u16 mask) +{ + int i; + + for (i = 0; i < 16; i++) { + u16 val; + int err; + + err = mv88e6xxx_read(chip, addr, reg, &val); + if (err) + return err; + + if (!(val & mask)) + return 0; + + udelay(2000); + } + + dev_err(chip->dev, "Timeout while waiting for switch\n"); + return -ETIMEDOUT; +} + +static int mv88e6xxx_mdio_read(struct mii_bus *bus, int phy, int reg) +{ + struct mv88e6xxx_chip *chip = bus->priv; + u16 val; + int err; + + if (!chip->info->ops->phy_read) + return -EOPNOTSUPP; + + err = chip->info->ops->phy_read(chip, bus, phy, reg, &val); + + if (reg == MII_PHYSID2) { + /* Some internal PHYS don't have a model number. Use + * the mv88e6390 family model number instead. + */ + if (!(val & 0x3f0)) + val |= MV88E6XXX_PORT_SWITCH_ID_PROD_6390 >> 4; + } + + return err ?: val; +} + +static int mv88e6xxx_mdio_write(struct mii_bus *bus, int phy, int reg, u16 val) +{ + struct mv88e6xxx_chip *chip = bus->priv; + int err; + + if (!chip->info->ops->phy_write) + return -EOPNOTSUPP; + + err = chip->info->ops->phy_write(chip, bus, phy, reg, val); + + return err; +} + +static const struct mv88e6xxx_info * +mv88e6xxx_lookup_info(unsigned int prod_num) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(mv88e6xxx_table); ++i) + if (mv88e6xxx_table[i].prod_num == prod_num) + return &mv88e6xxx_table[i]; + + return NULL; +} + +static int mv88e6xxx_detect(struct mv88e6xxx_chip *chip) +{ + const struct mv88e6xxx_info *info; + unsigned int prod_num, rev; + u16 id; + int err; + + err = mv88e6xxx_port_read(chip, 0, MV88E6XXX_PORT_SWITCH_ID, &id); + if (err) + return err; + + prod_num = id & MV88E6XXX_PORT_SWITCH_ID_PROD_MASK; + rev = id & MV88E6XXX_PORT_SWITCH_ID_REV_MASK; + + info = mv88e6xxx_lookup_info(prod_num); + if (!info) + return -ENODEV; + + /* Update the compatible info with the probed one */ + chip->info = info; + + dev_info(chip->dev, "switch 0x%x detected: %s, revision %u\n", + chip->info->prod_num, chip->info->name, rev); + + return 0; +} + +/* + * Linux driver has this delay at 20ms, but it doesn't seem to be + * enough in Barebox and trying to access switch registers immediately + * after this function will return all F's on some platforms + * tested. Increasing this to 50ms seem to resolve the issue. + */ +static void mv88e6xxx_hardware_reset_delay(void) +{ + udelay(50000); +} + +static void mv88e6xxx_hardware_reset(struct mv88e6xxx_chip *chip) +{ + /* If there is a GPIO connected to the reset pin, toggle it */ + if (gpio_is_valid(chip->reset)) { + gpio_set_active(chip->reset, 1); + mv88e6xxx_hardware_reset_delay(); + gpio_set_active(chip->reset, 0); + mv88e6xxx_hardware_reset_delay(); + } +} + +static int mv88e6xxx_switch_reset(struct mv88e6xxx_chip *chip) +{ + mv88e6xxx_hardware_reset(chip); + return 0; +} + +static int mv88e6xxx_probe(struct device_d *dev) +{ + struct device_node *np = dev->device_node; + struct device_node *mdio_node; + struct mv88e6xxx_chip *chip; + enum of_gpio_flags of_flags; + int err; + u32 reg; + + err = of_property_read_u32(np, "reg", ®); + if (err) { + dev_err(dev, "Couldn't determine switch MIDO address\n"); + return err; + } + + if (reg) { + dev_err(dev, "Only single-chip address mode is supported\n"); + return -ENOTSUPP; + } + + chip = xzalloc(sizeof(struct mv88e6xxx_chip)); + chip->dev = dev; + chip->info = of_device_get_match_data(dev); + + chip->parent_miibus = of_mdio_find_bus(np->parent); + if (!chip->parent_miibus) + return -EPROBE_DEFER; + + chip->reset = of_get_named_gpio_flags(np, "reset-gpios", 0, &of_flags); + if (gpio_is_valid(chip->reset)) { + unsigned long flags = GPIOF_OUT_INIT_INACTIVE; + char *name; + + if (of_flags & OF_GPIO_ACTIVE_LOW) + flags |= GPIOF_ACTIVE_LOW; + + name = basprintf("%s reset", dev_name(dev)); + err = gpio_request_one(chip->reset, flags, name); + if (err < 0) + return err; + /* + * We assume that reset line was previously held low + * and give the switch time to initialize before + * trying to read its registers + */ + mv88e6xxx_hardware_reset_delay(); + } + + err = mv88e6xxx_detect(chip); + if (err) + return err; + + err = mv88e6xxx_switch_reset(chip); + if (err) + return err; + /* + * In single-chip address mode addresses 0x10 - 0x1f are + * reserved to access various switch registers and do not + * correspond to any PHYs, so we mask them to pervent from + * being exposed as phy devices + */ + chip->parent_miibus->phy_mask |= GENMASK(0x1f, 0x10); + /* + * Address 0x0f on internal bus is dedicated to SERDES + * registers and won't be very useful against standard PHY + * driver + */ + chip->miibus.phy_mask |= GENMASK(0x1f, 0x0f); + + chip->miibus.read = mv88e6xxx_mdio_read; + chip->miibus.write = mv88e6xxx_mdio_write; + + chip->miibus.priv = chip; + chip->miibus.parent = dev; + + mdio_node = of_get_child_by_name(np, "mdio"); + if (mdio_node) + chip->miibus.dev.device_node = mdio_node; + + return mdiobus_register(&chip->miibus); +} + +static const struct of_device_id mv88e6xxx_of_match[] = { + { + .compatible = "marvell,mv88e6085", + .data = &mv88e6xxx_table[MV88E6085], + }, + { + .compatible = "marvell,mv88e6190", + .data = &mv88e6xxx_table[MV88E6190], + }, + {}, +}; + +static struct driver_d mv88e6xxx_driver = { + .name = "mv88e6085", + .probe = mv88e6xxx_probe, + .of_compatible = mv88e6xxx_of_match, +}; +device_platform_driver(mv88e6xxx_driver); diff --git a/drivers/net/phy/mv88e6xxx/chip.h b/drivers/net/phy/mv88e6xxx/chip.h new file mode 100644 index 000000000..d970099e1 --- /dev/null +++ b/drivers/net/phy/mv88e6xxx/chip.h @@ -0,0 +1,61 @@ +#ifndef _MV88E6XXX_CHIP_H +#define _MV88E6XXX_CHIP_H + +#include +#include +#include +#include + +/* sub-devices MDIO addresses */ +#define MV88E6XXX_SWITCH_GLOBAL_REGS_1 0x1b +#define MV88E6XXX_SWITCH_GLOBAL_REGS_2 0x1c + +enum mv88e6xxx_family { + MV88E6XXX_FAMILY_NONE, + MV88E6XXX_FAMILY_6065, /* 6031 6035 6061 6065 */ + MV88E6XXX_FAMILY_6095, /* 6092 6095 */ + MV88E6XXX_FAMILY_6097, /* 6046 6085 6096 6097 */ + MV88E6XXX_FAMILY_6165, /* 6123 6161 6165 */ + MV88E6XXX_FAMILY_6185, /* 6108 6121 6122 6131 6152 6155 6182 6185 */ + MV88E6XXX_FAMILY_6320, /* 6320 6321 */ + MV88E6XXX_FAMILY_6341, /* 6141 6341 */ + MV88E6XXX_FAMILY_6351, /* 6171 6175 6350 6351 */ + MV88E6XXX_FAMILY_6352, /* 6172 6176 6240 6352 */ + MV88E6XXX_FAMILY_6390, /* 6190 6190X 6191 6290 6390 6390X */ +}; + +struct mv88e6xxx_ops; + +struct mv88e6xxx_info { + enum mv88e6xxx_family family; + u16 prod_num; + const char *name; + unsigned int num_ports; + unsigned int port_base_addr; + unsigned int global2_addr; + + const struct mv88e6xxx_ops *ops; +}; + +struct mv88e6xxx_chip { + const struct mv88e6xxx_info *info; + struct mii_bus *parent_miibus; + struct mii_bus miibus; + struct device_d *dev; + int reset; +}; + +struct mv88e6xxx_ops { + int (*phy_read)(struct mv88e6xxx_chip *chip, + struct mii_bus *bus, + int addr, int reg, u16 *val); + int (*phy_write)(struct mv88e6xxx_chip *chip, + struct mii_bus *bus, + int addr, int reg, u16 val); +}; + +int mv88e6xxx_write(struct mv88e6xxx_chip *chip, int addr, int reg, u16 val); +int mv88e6xxx_read(struct mv88e6xxx_chip *chip, int addr, int reg, u16 *val); +int mv88e6xxx_wait(struct mv88e6xxx_chip *chip, int addr, int reg, u16 mask); + +#endif /* _MV88E6XXX_CHIP_H */ \ No newline at end of file diff --git a/drivers/net/phy/mv88e6xxx/global2.c b/drivers/net/phy/mv88e6xxx/global2.c new file mode 100644 index 000000000..a3c7bc0e5 --- /dev/null +++ b/drivers/net/phy/mv88e6xxx/global2.c @@ -0,0 +1,124 @@ +#include +#include + +#include "global2.h" + +int mv88e6xxx_g2_read(struct mv88e6xxx_chip *chip, int reg, u16 *val) +{ + return mv88e6xxx_read(chip, chip->info->global2_addr, reg, val); +} + +int mv88e6xxx_g2_write(struct mv88e6xxx_chip *chip, int reg, u16 val) +{ + return mv88e6xxx_write(chip, chip->info->global2_addr, reg, val); +} + +int mv88e6xxx_g2_wait(struct mv88e6xxx_chip *chip, int reg, u16 mask) +{ + return mv88e6xxx_wait(chip, chip->info->global2_addr, reg, mask); +} + +static int mv88e6xxx_g2_smi_phy_wait(struct mv88e6xxx_chip *chip) +{ + return mv88e6xxx_g2_wait(chip, MV88E6XXX_G2_SMI_PHY_CMD, + MV88E6XXX_G2_SMI_PHY_CMD_BUSY); +} + +static int mv88e6xxx_g2_smi_phy_cmd(struct mv88e6xxx_chip *chip, u16 cmd) +{ + int err; + + err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_SMI_PHY_CMD, + MV88E6XXX_G2_SMI_PHY_CMD_BUSY | cmd); + if (err) + return err; + + return mv88e6xxx_g2_smi_phy_wait(chip); +} + +static int mv88e6xxx_g2_smi_phy_access(struct mv88e6xxx_chip *chip, + bool external, bool c45, u16 op, int dev, + int reg) +{ + u16 cmd = op; + + if (external) + cmd |= MV88E6390_G2_SMI_PHY_CMD_FUNC_EXTERNAL; + else + cmd |= MV88E6390_G2_SMI_PHY_CMD_FUNC_INTERNAL; /* empty mask */ + + if (c45) + cmd |= MV88E6XXX_G2_SMI_PHY_CMD_MODE_45; /* empty mask */ + else + cmd |= MV88E6XXX_G2_SMI_PHY_CMD_MODE_22; + + dev <<= __bf_shf(MV88E6XXX_G2_SMI_PHY_CMD_DEV_ADDR_MASK); + cmd |= dev & MV88E6XXX_G2_SMI_PHY_CMD_DEV_ADDR_MASK; + cmd |= reg & MV88E6XXX_G2_SMI_PHY_CMD_REG_ADDR_MASK; + + return mv88e6xxx_g2_smi_phy_cmd(chip, cmd); +} + +static int mv88e6xxx_g2_smi_phy_access_c22(struct mv88e6xxx_chip *chip, + bool external, u16 op, int dev, + int reg) +{ + return mv88e6xxx_g2_smi_phy_access(chip, external, false, op, dev, reg); +} + +/* IEEE 802.3 Clause 22 Read Data Register */ +static int mv88e6xxx_g2_smi_phy_read_data_c22(struct mv88e6xxx_chip *chip, + bool external, int dev, int reg, + u16 *data) +{ + u16 op = MV88E6XXX_G2_SMI_PHY_CMD_OP_22_READ_DATA; + int err; + + err = mv88e6xxx_g2_smi_phy_wait(chip); + if (err) + return err; + + err = mv88e6xxx_g2_smi_phy_access_c22(chip, external, op, dev, reg); + if (err) + return err; + + return mv88e6xxx_g2_read(chip, MV88E6XXX_G2_SMI_PHY_DATA, data); +} + +/* IEEE 802.3 Clause 22 Write Data Register */ +static int mv88e6xxx_g2_smi_phy_write_data_c22(struct mv88e6xxx_chip *chip, + bool external, int dev, int reg, + u16 data) +{ + u16 op = MV88E6XXX_G2_SMI_PHY_CMD_OP_22_WRITE_DATA; + int err; + + err = mv88e6xxx_g2_smi_phy_wait(chip); + if (err) + return err; + + err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_SMI_PHY_DATA, data); + if (err) + return err; + + return mv88e6xxx_g2_smi_phy_access_c22(chip, external, op, dev, reg); +} + + +int mv88e6xxx_g2_smi_phy_read(struct mv88e6xxx_chip *chip, struct mii_bus *bus, + int addr, int reg, u16 *val) +{ + bool external = false; + + return mv88e6xxx_g2_smi_phy_read_data_c22(chip, external, addr, reg, + val); +} + +int mv88e6xxx_g2_smi_phy_write(struct mv88e6xxx_chip *chip, struct mii_bus *bus, + int addr, int reg, u16 val) +{ + bool external = false; + + return mv88e6xxx_g2_smi_phy_write_data_c22(chip, external, addr, reg, + val); +} diff --git a/drivers/net/phy/mv88e6xxx/global2.h b/drivers/net/phy/mv88e6xxx/global2.h new file mode 100644 index 000000000..28bbd8c43 --- /dev/null +++ b/drivers/net/phy/mv88e6xxx/global2.h @@ -0,0 +1,41 @@ +#ifndef _MV88E6XXX_GLOBAL2_H +#define _MV88E6XXX_GLOBAL2_H + +#include "chip.h" + +/* Offset 0x18: SMI PHY Command Register */ +#define MV88E6XXX_G2_SMI_PHY_CMD 0x18 +#define MV88E6XXX_G2_SMI_PHY_CMD_BUSY 0x8000 +#define MV88E6390_G2_SMI_PHY_CMD_FUNC_MASK 0x6000 +#define MV88E6390_G2_SMI_PHY_CMD_FUNC_INTERNAL 0x0000 +#define MV88E6390_G2_SMI_PHY_CMD_FUNC_EXTERNAL 0x2000 +#define MV88E6390_G2_SMI_PHY_CMD_FUNC_SETUP 0x4000 +#define MV88E6XXX_G2_SMI_PHY_CMD_MODE_MASK 0x1000 +#define MV88E6XXX_G2_SMI_PHY_CMD_MODE_45 0x0000 +#define MV88E6XXX_G2_SMI_PHY_CMD_MODE_22 0x1000 +#define MV88E6XXX_G2_SMI_PHY_CMD_OP_MASK 0x0c00 +#define MV88E6XXX_G2_SMI_PHY_CMD_OP_22_WRITE_DATA 0x0400 +#define MV88E6XXX_G2_SMI_PHY_CMD_OP_22_READ_DATA 0x0800 +#define MV88E6XXX_G2_SMI_PHY_CMD_OP_45_WRITE_ADDR 0x0000 +#define MV88E6XXX_G2_SMI_PHY_CMD_OP_45_WRITE_DATA 0x0400 +#define MV88E6XXX_G2_SMI_PHY_CMD_OP_45_READ_DATA_INC 0x0800 +#define MV88E6XXX_G2_SMI_PHY_CMD_OP_45_READ_DATA 0x0c00 +#define MV88E6XXX_G2_SMI_PHY_CMD_DEV_ADDR_MASK 0x03e0 +#define MV88E6XXX_G2_SMI_PHY_CMD_REG_ADDR_MASK 0x001f +#define MV88E6XXX_G2_SMI_PHY_CMD_SETUP_PTR_MASK 0x03ff + +/* Offset 0x19: SMI PHY Data Register */ +#define MV88E6XXX_G2_SMI_PHY_DATA 0x19 + +int mv88e6xxx_g2_read(struct mv88e6xxx_chip *chip, int reg, u16 *val); +int mv88e6xxx_g2_write(struct mv88e6xxx_chip *chip, int reg, u16 val); +int mv88e6xxx_g2_wait(struct mv88e6xxx_chip *chip, int reg, u16 mask); + +int mv88e6xxx_g2_smi_phy_read(struct mv88e6xxx_chip *chip, + struct mii_bus *bus, + int addr, int reg, u16 *val); +int mv88e6xxx_g2_smi_phy_write(struct mv88e6xxx_chip *chip, + struct mii_bus *bus, + int addr, int reg, u16 val); + +#endif /* _MV88E6XXX_GLOBAL2_H */ \ No newline at end of file diff --git a/drivers/net/phy/mv88e6xxx/port.c b/drivers/net/phy/mv88e6xxx/port.c new file mode 100644 index 000000000..59afdbd97 --- /dev/null +++ b/drivers/net/phy/mv88e6xxx/port.c @@ -0,0 +1,20 @@ +#include +#include + +#include "port.h" + +int mv88e6xxx_port_read(struct mv88e6xxx_chip *chip, int port, int reg, + u16 *val) +{ + int addr = chip->info->port_base_addr + port; + + return mv88e6xxx_read(chip, addr, reg, val); +} + +int mv88e6xxx_port_write(struct mv88e6xxx_chip *chip, int port, int reg, + u16 val) +{ + int addr = chip->info->port_base_addr + port; + + return mv88e6xxx_write(chip, addr, reg, val); +} diff --git a/drivers/net/phy/mv88e6xxx/port.h b/drivers/net/phy/mv88e6xxx/port.h new file mode 100644 index 000000000..84c76c42c --- /dev/null +++ b/drivers/net/phy/mv88e6xxx/port.h @@ -0,0 +1,89 @@ +#ifndef _MV88E6XXX_PORT_H +#define _MV88E6XXX_PORT_H + +#include "chip.h" + +/* Offset 0x00: Port Status Register */ +#define MV88E6XXX_PORT_STS 0x00 +#define MV88E6XXX_PORT_STS_PAUSE_EN 0x8000 +#define MV88E6XXX_PORT_STS_MY_PAUSE 0x4000 +#define MV88E6XXX_PORT_STS_HD_FLOW 0x2000 +#define MV88E6XXX_PORT_STS_PHY_DETECT 0x1000 +#define MV88E6XXX_PORT_STS_LINK 0x0800 +#define MV88E6XXX_PORT_STS_DUPLEX 0x0400 +#define MV88E6XXX_PORT_STS_SPEED_MASK 0x0300 +#define MV88E6XXX_PORT_STS_SPEED_10 0x0000 +#define MV88E6XXX_PORT_STS_SPEED_100 0x0100 +#define MV88E6XXX_PORT_STS_SPEED_1000 0x0200 +#define MV88E6352_PORT_STS_EEE 0x0040 +#define MV88E6165_PORT_STS_AM_DIS 0x0040 +#define MV88E6185_PORT_STS_MGMII 0x0040 +#define MV88E6XXX_PORT_STS_TX_PAUSED 0x0020 +#define MV88E6XXX_PORT_STS_FLOW_CTL 0x0010 +#define MV88E6XXX_PORT_STS_CMODE_MASK 0x000f +#define MV88E6XXX_PORT_STS_CMODE_100BASE_X 0x0008 +#define MV88E6XXX_PORT_STS_CMODE_1000BASE_X 0x0009 +#define MV88E6XXX_PORT_STS_CMODE_SGMII 0x000a +#define MV88E6XXX_PORT_STS_CMODE_2500BASEX 0x000b +#define MV88E6XXX_PORT_STS_CMODE_XAUI 0x000c +#define MV88E6XXX_PORT_STS_CMODE_RXAUI 0x000d + +/* Offset 0x01: MAC (or PCS or Physical) Control Register */ +#define MV88E6XXX_PORT_MAC_CTL 0x01 +#define MV88E6XXX_PORT_MAC_CTL_RGMII_DELAY_RXCLK 0x8000 +#define MV88E6XXX_PORT_MAC_CTL_RGMII_DELAY_TXCLK 0x4000 +#define MV88E6390_PORT_MAC_CTL_FORCE_SPEED 0x2000 +#define MV88E6390_PORT_MAC_CTL_ALTSPEED 0x1000 +#define MV88E6352_PORT_MAC_CTL_200BASE 0x1000 +#define MV88E6XXX_PORT_MAC_CTL_FC 0x0080 +#define MV88E6XXX_PORT_MAC_CTL_FORCE_FC 0x0040 +#define MV88E6XXX_PORT_MAC_CTL_LINK_UP 0x0020 +#define MV88E6XXX_PORT_MAC_CTL_FORCE_LINK 0x0010 +#define MV88E6XXX_PORT_MAC_CTL_DUPLEX_FULL 0x0008 +#define MV88E6XXX_PORT_MAC_CTL_FORCE_DUPLEX 0x0004 +#define MV88E6XXX_PORT_MAC_CTL_SPEED_MASK 0x0003 +#define MV88E6XXX_PORT_MAC_CTL_SPEED_10 0x0000 +#define MV88E6XXX_PORT_MAC_CTL_SPEED_100 0x0001 +#define MV88E6065_PORT_MAC_CTL_SPEED_200 0x0002 +#define MV88E6XXX_PORT_MAC_CTL_SPEED_1000 0x0002 +#define MV88E6390_PORT_MAC_CTL_SPEED_10000 0x0003 +#define MV88E6XXX_PORT_MAC_CTL_SPEED_UNFORCED 0x0003 + +/* Offset 0x03: Switch Identifier Register */ +#define MV88E6XXX_PORT_SWITCH_ID 0x03 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_MASK 0xfff0 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6085 0x04a0 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6095 0x0950 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6097 0x0990 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6190X 0x0a00 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6390X 0x0a10 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6131 0x1060 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6320 0x1150 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6123 0x1210 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6161 0x1610 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6165 0x1650 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6171 0x1710 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6172 0x1720 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6175 0x1750 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6176 0x1760 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6190 0x1900 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6191 0x1910 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6185 0x1a70 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6240 0x2400 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6290 0x2900 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6321 0x3100 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6141 0x3400 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6341 0x3410 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6352 0x3520 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6350 0x3710 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6351 0x3750 +#define MV88E6XXX_PORT_SWITCH_ID_PROD_6390 0x3900 +#define MV88E6XXX_PORT_SWITCH_ID_REV_MASK 0x000f + +int mv88e6xxx_port_read(struct mv88e6xxx_chip *chip, int port, int reg, + u16 *val); +int mv88e6xxx_port_write(struct mv88e6xxx_chip *chip, int port, int reg, + u16 val); + + +#endif /* _MV88E6XXX_PORT_H */ \ No newline at end of file -- 2.17.1 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox