[U-Boot] [PATCH 1/2 V2] Add USB host ethernet adapter support
This adds support for using USB Ethernet dongles in host mode. This is just the framework - drivers will come later. A new config option called CONFIG_USB_HOST_ETHER can be defined in board config files to switch this on.
The was originally written by NVIDIA and was cleaned up for release by the Chromium authors.
Signed-off-by: Simon Glass sjg@chromium.org --- Makefile | 1 + common/cmd_usb.c | 12 +++- common/usb.c | 6 ++- doc/README.usb | 4 +- drivers/usb/eth/Makefile | 45 ++++++++++++++ drivers/usb/eth/usb_ether.c | 143 +++++++++++++++++++++++++++++++++++++++++++ include/usb.h | 9 +++- include/usb_ether.h | 61 ++++++++++++++++++ net/eth.c | 47 +++++++-------- 9 files changed, 298 insertions(+), 30 deletions(-) create mode 100644 drivers/usb/eth/Makefile create mode 100644 drivers/usb/eth/usb_ether.c create mode 100644 include/usb_ether.h
diff --git a/Makefile b/Makefile index 60b6494..bbee4f8 100644 --- a/Makefile +++ b/Makefile @@ -237,6 +237,7 @@ endif LIBS += drivers/rtc/librtc.a LIBS += drivers/serial/libserial.a LIBS += drivers/twserial/libtws.a +LIBS += drivers/usb/eth/libusb_eth.a LIBS += drivers/usb/gadget/libusb_gadget.a LIBS += drivers/usb/host/libusb_host.a LIBS += drivers/usb/musb/libusb_musb.a diff --git a/common/cmd_usb.c b/common/cmd_usb.c index 6b5c582..b270eb0 100644 --- a/common/cmd_usb.c +++ b/common/cmd_usb.c @@ -34,6 +34,9 @@ #ifdef CONFIG_USB_STORAGE static int usb_stor_curr_dev = -1; /* current device */ #endif +#ifdef CONFIG_USB_HOST_ETHER +static int usb_ether_curr_dev = -1; /* current ethernet device */ +#endif
/* some display routines (info command) */ char *usb_get_class_desc(unsigned char dclass) @@ -521,11 +524,16 @@ int do_usb(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) usb_stop(); printf("(Re)start USB...\n"); i = usb_init(); + if (i >= 0) { #ifdef CONFIG_USB_STORAGE - /* try to recognize storage devices immediately */ - if (i >= 0) + /* try to recognize storage devices immediately */ usb_stor_curr_dev = usb_stor_scan(1); #endif +#ifdef CONFIG_USB_HOST_ETHER + /* try to recognize ethernet devices immediately */ + usb_ether_curr_dev = usb_host_eth_scan(1); +#endif + } return 0; } if (strncmp(argv[1], "stop", 4) == 0) { diff --git a/common/usb.c b/common/usb.c index 10e23de..94f26f4 100644 --- a/common/usb.c +++ b/common/usb.c @@ -142,10 +142,14 @@ int usb_stop(void) /* * disables the asynch behaviour of the control message. This is used for data * transfers that uses the exclusiv access to the control and bulk messages. + * Returns the old value so it can be restored later. */ -void usb_disable_asynch(int disable) +int usb_disable_asynch(int disable) { + int old_value = asynch_allowed; + asynch_allowed = !disable; + return old_value; }
diff --git a/doc/README.usb b/doc/README.usb index b3bcb91..9aa4f62 100644 --- a/doc/README.usb +++ b/doc/README.usb @@ -28,7 +28,8 @@ USB Support for PIP405 and MIP405 (UHCI) The USB support is implemented on the base of the UHCI Host controller.
-Currently supported are USB Hubs, USB Keyboards and USB Floppys. +Currently supported are USB Hubs, USB Keyboards, USB Floppys, USB +flash sticks and USB network adaptors. Tested with a TEAC Floppy TEAC FD-05PUB and Chicony KU-8933 Keyboard.
How it works: @@ -78,3 +79,4 @@ CONFIG_USB_UHCI defines the lowlevel part.A lowlevel part must be defined if using CONFIG_CMD_USB CONFIG_USB_KEYBOARD enables the USB Keyboard CONFIG_USB_STORAGE enables the USB storage devices +CONFIG_USB_HOST_ETHER enables USB ethernet dongle support diff --git a/drivers/usb/eth/Makefile b/drivers/usb/eth/Makefile new file mode 100644 index 0000000..a0f5676 --- /dev/null +++ b/drivers/usb/eth/Makefile @@ -0,0 +1,45 @@ +# +# Copyright (c) 2011 The Chromium OS Authors. +# See file CREDITS for list of people who contributed to this +# project. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# + +include $(TOPDIR)/config.mk + +LIB := $(obj)libusb_eth.a + +# new USB host ethernet layer dependencies +COBJS-$(CONFIG_USB_HOST_ETHER) += usb_ether.o + +COBJS := $(COBJS-y) +SRCS := $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(COBJS)) + +all: $(LIB) + +$(LIB): $(obj).depend $(OBJS) + $(AR) $(ARFLAGS) $@ $(OBJS) + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/drivers/usb/eth/usb_ether.c b/drivers/usb/eth/usb_ether.c new file mode 100644 index 0000000..c2342ed --- /dev/null +++ b/drivers/usb/eth/usb_ether.c @@ -0,0 +1,143 @@ +/* + * Copyright (c) 2011 The Chromium OS Authors. + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <usb.h> + +#include "usb_ether.h" + +typedef void (*usb_eth_before_probe)(void); +typedef int (*usb_eth_probe)(struct usb_device *dev, unsigned int ifnum, + struct ueth_data *ss); +typedef int (*usb_eth_get_info)(struct usb_device *dev, struct ueth_data *ss, + struct eth_device *dev_desc); + +struct usb_eth_prob_dev { + usb_eth_before_probe before_probe; /* optional */ + usb_eth_probe probe; + usb_eth_get_info get_info; +}; + +/* driver functions go here, each bracketed by #ifdef CONFIG_USB_ETHER_xxx */ +static const struct usb_eth_prob_dev prob_dev[] = { + { }, /* END */ +}; + +static int usb_max_eth_dev; /* number of highest available usb eth device */ +static struct ueth_data usb_eth[USB_MAX_ETH_DEV]; + +/******************************************************************************* + * tell if current ethernet device is a usb dongle + */ +int is_eth_dev_on_usb_host(void) +{ + int i; + struct eth_device *dev = eth_get_dev(); + + if (dev) { + for (i = 0; i < usb_max_eth_dev; i++) + if (&usb_eth[i].eth_dev == dev) + return 1; + } + return 0; +} + +/* + * Given a USB device, ask each driver if it can support it, and attach it + * to the first driver that says 'yes' + */ +static void probe_valid_drivers(struct usb_device *dev) +{ + int j; + + for (j = 0; prob_dev[j].probe && prob_dev[j].get_info; j++) { + if (!prob_dev[j].probe(dev, 0, &usb_eth[usb_max_eth_dev])) + continue; + /* + * ok, it is a supported eth device. Get info and fill it in + */ + if (prob_dev[j].get_info(dev, + &usb_eth[usb_max_eth_dev], + &usb_eth[usb_max_eth_dev].eth_dev)) { + /* found proper driver */ + /* register with networking stack */ + usb_max_eth_dev++; + + /* + * usb_max_eth_dev must be incremented prior to this + * call since eth_current_changed (internally called) + * relies on it + */ + eth_register(&usb_eth[usb_max_eth_dev - 1].eth_dev); + break; + } + } + } + +/******************************************************************************* + * scan the usb and reports device info + * to the user if mode = 1 + * returns current device or -1 if no + */ +int usb_host_eth_scan(int mode) +{ + int i, old_async; + struct usb_device *dev; + + + if (mode == 1) + printf(" scanning bus for ethernet devices... "); + + old_async = usb_disable_asynch(1); /* asynch transfer not allowed */ + + for (i = 0; i < USB_MAX_ETH_DEV; i++) + memset(&usb_eth[i], 0, sizeof(usb_eth[i])); + + for (i = 0; prob_dev[i].probe; i++) { + if (prob_dev[i].before_probe) + prob_dev[i].before_probe(); + } + + usb_max_eth_dev = 0; + for (i = 0; i < USB_MAX_DEVICE; i++) { + dev = usb_get_dev_index(i); /* get device */ + debug("i=%d\n", i); + if (dev == NULL) + break; /* no more devices avaiable */ + + /* find valid usb_ether driver for this device, if any */ + probe_valid_drivers(dev); + + /* check limit */ + if (usb_max_eth_dev == USB_MAX_ETH_DEV) { + printf("max USB Ethernet Device reached: %d stopping\n", + usb_max_eth_dev); + break; + } + } /* for */ + + usb_disable_asynch(old_async); /* restore asynch value */ + printf("%d Ethernet Device(s) found\n", usb_max_eth_dev); + if (usb_max_eth_dev > 0) + return 0; + return -1; +} + diff --git a/include/usb.h b/include/usb.h index 26dc818..0a97187 100644 --- a/include/usb.h +++ b/include/usb.h @@ -168,6 +168,13 @@ int usb_stor_info(void);
#endif
+#ifdef CONFIG_USB_HOST_ETHER + +#define USB_MAX_ETH_DEV 5 +int usb_host_eth_scan(int mode); + +#endif + #ifdef CONFIG_USB_KEYBOARD
int drv_usb_kbd_init(void); @@ -191,7 +198,7 @@ int usb_bulk_msg(struct usb_device *dev, unsigned int pipe, void *data, int len, int *actual_length, int timeout); int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer, int transfer_len, int interval); -void usb_disable_asynch(int disable); +int usb_disable_asynch(int disable); int usb_maxpacket(struct usb_device *dev, unsigned long pipe); inline void wait_ms(unsigned long ms); int usb_get_configuration_no(struct usb_device *dev, unsigned char *buffer, diff --git a/include/usb_ether.h b/include/usb_ether.h new file mode 100644 index 0000000..31cbc8d --- /dev/null +++ b/include/usb_ether.h @@ -0,0 +1,61 @@ +/* + * Copyright (c) 2011 The Chromium OS Authors. + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef __USB_ETHER_H__ +#define __USB_ETHER_H__ + +#include <net.h> + +/* + * IEEE 802.3 Ethernet magic constants. The frame sizes omit the preamble + * and FCS/CRC (frame check sequence). + */ +#define ETH_ALEN 6 /* Octets in one ethernet addr */ +#define ETH_HLEN 14 /* Total octets in header. */ +#define ETH_ZLEN 60 /* Min. octets in frame sans FCS */ +#define ETH_DATA_LEN 1500 /* Max. octets in payload */ +#define ETH_FRAME_LEN PKTSIZE_ALIGN /* Max. octets in frame sans FCS */ +#define ETH_FCS_LEN 4 /* Octets in the FCS */ + +struct ueth_data { + /* eth info */ + struct eth_device eth_dev; /* used with eth_register */ + int phy_id; /* mii phy id */ + + /* usb info */ + struct usb_device *pusb_dev; /* this usb_device */ + unsigned char ifnum; /* interface number */ + unsigned char ep_in; /* in endpoint */ + unsigned char ep_out; /* out ....... */ + unsigned char ep_int; /* interrupt . */ + unsigned char subclass; /* as in overview */ + unsigned char protocol; /* .............. */ + unsigned char irqinterval; /* Intervall for IRQ Pipe */ + + /* private fields for each driver can go here if needed */ +}; + +/* + * Function definitions for each USB ethernet driver go here, bracketed by + * #ifdef CONFIG_USB_ETHER_xxx...#endif + */ + +#endif /* __USB_ETHER_H__ */ diff --git a/net/eth.c b/net/eth.c index b650a20..894c9ab 100644 --- a/net/eth.c +++ b/net/eth.c @@ -158,20 +158,33 @@ int eth_get_dev_index (void) return (0); }
-int eth_register(struct eth_device* dev) +static void eth_current_changed(void) { - struct eth_device *d; - - if (!eth_devices) { - eth_current = eth_devices = dev; #ifdef CONFIG_NET_MULTI + { + char *act = getenv("ethact"); /* update current ethernet name */ + if (eth_current) { - char *act = getenv("ethact"); if (act == NULL || strcmp(act, eth_current->name) != 0) setenv("ethact", eth_current->name); } + /* + * remove the variable completely if there is no active + * interface + */ + else if (act != NULL) + setenv("ethact", NULL); + } #endif +} + +int eth_register(struct eth_device *dev) +{ + struct eth_device *d; + if (!eth_devices) { + eth_current = eth_devices = dev; + eth_current_changed(); } else { for (d=eth_devices; d->next!=eth_devices; d=d->next); d->next = dev; @@ -246,15 +259,7 @@ int eth_initialize(bd_t *bis) dev = dev->next; } while(dev != eth_devices);
-#ifdef CONFIG_NET_MULTI - /* update current ethernet name */ - if (eth_current) { - char *act = getenv("ethact"); - if (act == NULL || strcmp(act, eth_current->name) != 0) - setenv("ethact", eth_current->name); - } else - setenv("ethact", NULL); -#endif + eth_current_changed();
putc ('\n'); } @@ -442,15 +447,7 @@ void eth_try_another(int first_restart) }
eth_current = eth_current->next; - -#ifdef CONFIG_NET_MULTI - /* update current ethernet name */ - { - char *act = getenv("ethact"); - if (act == NULL || strcmp(act, eth_current->name) != 0) - setenv("ethact", eth_current->name); - } -#endif + eth_current_changed();
if (first_failed == eth_current) { NetRestartWrap = 1; @@ -482,7 +479,7 @@ void eth_set_current(void) } while (old_current != eth_current); }
- setenv("ethact", eth_current->name); + eth_current_changed(); } #endif
Driver originally written by NVIDIA Corporation, modified to handle odd-length packets.
Signed-off-by: Simon Glass sjg@chromium.org --- drivers/usb/eth/Makefile | 3 + drivers/usb/eth/asix.c | 635 +++++++++++++++++++++++++++++++++++++++++++ drivers/usb/eth/usb_ether.c | 7 + include/usb_ether.h | 7 + 4 files changed, 652 insertions(+), 0 deletions(-) create mode 100644 drivers/usb/eth/asix.c
diff --git a/drivers/usb/eth/Makefile b/drivers/usb/eth/Makefile index a0f5676..6a5f25a 100644 --- a/drivers/usb/eth/Makefile +++ b/drivers/usb/eth/Makefile @@ -25,6 +25,9 @@ LIB := $(obj)libusb_eth.a
# new USB host ethernet layer dependencies COBJS-$(CONFIG_USB_HOST_ETHER) += usb_ether.o +ifdef CONFIG_USB_ETHER_ASIX +COBJS-y += asix.o +endif
COBJS := $(COBJS-y) SRCS := $(COBJS:.o=.c) diff --git a/drivers/usb/eth/asix.c b/drivers/usb/eth/asix.c new file mode 100644 index 0000000..9b012e4 --- /dev/null +++ b/drivers/usb/eth/asix.c @@ -0,0 +1,635 @@ +/* + * Copyright (c) 2011 The Chromium OS Authors. + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <usb.h> +#include <linux/mii.h> +#include "usb_ether.h" + + +/* ASIX AX8817X based USB 2.0 Ethernet Devices */ + +#define AX_CMD_SET_SW_MII 0x06 +#define AX_CMD_READ_MII_REG 0x07 +#define AX_CMD_WRITE_MII_REG 0x08 +#define AX_CMD_SET_HW_MII 0x0a +#define AX_CMD_READ_RX_CTL 0x0f +#define AX_CMD_WRITE_RX_CTL 0x10 +#define AX_CMD_WRITE_IPG0 0x12 +#define AX_CMD_READ_NODE_ID 0x13 +#define AX_CMD_READ_PHY_ID 0x19 +#define AX_CMD_WRITE_MEDIUM_MODE 0x1b +#define AX_CMD_WRITE_GPIOS 0x1f +#define AX_CMD_SW_RESET 0x20 +#define AX_CMD_SW_PHY_SELECT 0x22 + +#define AX_SWRESET_CLEAR 0x00 +#define AX_SWRESET_PRTE 0x04 +#define AX_SWRESET_PRL 0x08 +#define AX_SWRESET_IPRL 0x20 +#define AX_SWRESET_IPPD 0x40 + +#define AX88772_IPG0_DEFAULT 0x15 +#define AX88772_IPG1_DEFAULT 0x0c +#define AX88772_IPG2_DEFAULT 0x12 + +/* AX88772 & AX88178 Medium Mode Register */ +#define AX_MEDIUM_PF 0x0080 +#define AX_MEDIUM_JFE 0x0040 +#define AX_MEDIUM_TFC 0x0020 +#define AX_MEDIUM_RFC 0x0010 +#define AX_MEDIUM_ENCK 0x0008 +#define AX_MEDIUM_AC 0x0004 +#define AX_MEDIUM_FD 0x0002 +#define AX_MEDIUM_GM 0x0001 +#define AX_MEDIUM_SM 0x1000 +#define AX_MEDIUM_SBP 0x0800 +#define AX_MEDIUM_PS 0x0200 +#define AX_MEDIUM_RE 0x0100 + +#define AX88178_MEDIUM_DEFAULT \ + (AX_MEDIUM_PS | AX_MEDIUM_FD | AX_MEDIUM_AC | \ + AX_MEDIUM_RFC | AX_MEDIUM_TFC | AX_MEDIUM_JFE | \ + AX_MEDIUM_RE) + +#define AX88772_MEDIUM_DEFAULT \ + (AX_MEDIUM_FD | AX_MEDIUM_RFC | \ + AX_MEDIUM_TFC | AX_MEDIUM_PS | \ + AX_MEDIUM_AC | AX_MEDIUM_RE) + +/* AX88772 & AX88178 RX_CTL values */ +#define AX_RX_CTL_SO 0x0080 +#define AX_RX_CTL_AB 0x0008 + +#define AX_DEFAULT_RX_CTL \ + (AX_RX_CTL_SO | AX_RX_CTL_AB) + +/* GPIO 2 toggles */ +#define AX_GPIO_GPO2EN 0x10 /* GPIO2 Output enable */ +#define AX_GPIO_GPO_2 0x20 /* GPIO2 Output value */ +#define AX_GPIO_RSE 0x80 /* Reload serial EEPROM */ + +/* local defines */ +#define ASIX_BASE_NAME "asx" +#define USB_CTRL_SET_TIMEOUT 5000 +#define USB_CTRL_GET_TIMEOUT 5000 +#define USB_BULK_SEND_TIMEOUT 5000 +#define USB_BULK_RECV_TIMEOUT 5000 + +#define AX_RX_URB_SIZE 2048 +#define PHY_CONNECT_TIMEOUT 5000 + +/* local vars */ +static int curr_eth_dev; /* index for name of next device detected */ + +/* + * Asix infrastructure commands + */ +static int asix_write_cmd(struct ueth_data *dev, u8 cmd, u16 value, u16 index, + u16 size, void *data) +{ + int len; + + debug("asix_write_cmd() cmd=0x%02x value=0x%04x index=0x%04x " + "size=%d\n", cmd, value, index, size); + + len = usb_control_msg( + dev->pusb_dev, + usb_sndctrlpipe(dev->pusb_dev, 0), + cmd, + USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + value, + index, + data, + size, + USB_CTRL_SET_TIMEOUT); + + return len == size ? 0 : -1; +} + +static int asix_read_cmd(struct ueth_data *dev, u8 cmd, u16 value, u16 index, + u16 size, void *data) +{ + int len; + + debug("asix_read_cmd() cmd=0x%02x value=0x%04x index=0x%04x size=%d\n", + cmd, value, index, size); + + len = usb_control_msg( + dev->pusb_dev, + usb_rcvctrlpipe(dev->pusb_dev, 0), + cmd, + USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + value, + index, + data, + size, + USB_CTRL_GET_TIMEOUT); + return len == size ? 0 : -1; +} + +static inline int asix_set_sw_mii(struct ueth_data *dev) +{ + int ret; + + ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL); + if (ret < 0) + debug("Failed to enable software MII access\n"); + return ret; +} + +static inline int asix_set_hw_mii(struct ueth_data *dev) +{ + int ret; + + ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL); + if (ret < 0) + debug("Failed to enable hardware MII access\n"); + return ret; +} + +static int asix_mdio_read(struct ueth_data *dev, int phy_id, int loc) +{ + __le16 res; + + asix_set_sw_mii(dev); + asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id, (__u16)loc, 2, &res); + asix_set_hw_mii(dev); + + debug("asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n", + phy_id, loc, le16_to_cpu(res)); + + return le16_to_cpu(res); +} + +static void +asix_mdio_write(struct ueth_data *dev, int phy_id, int loc, int val) +{ + __le16 res = cpu_to_le16(val); + + debug("asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n", + phy_id, loc, val); + asix_set_sw_mii(dev); + asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, &res); + asix_set_hw_mii(dev); +} + +/* + * Asix "high level" commands + */ +static int asix_sw_reset(struct ueth_data *dev, u8 flags) +{ + int ret; + + ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL); + if (ret < 0) + debug("Failed to send software reset: %02x\n", ret); + else + udelay(150 * 1000); + + return ret; +} + +static inline int asix_get_phy_addr(struct ueth_data *dev) +{ + u8 buf[2]; + int ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf); + + debug("asix_get_phy_addr()\n"); + + if (ret < 0) { + debug("Error reading PHYID register: %02x\n", ret); + goto out; + } + debug("asix_get_phy_addr() returning 0x%04x\n", *((__le16 *)buf)); + ret = buf[1]; + +out: + return ret; +} + +static int asix_write_medium_mode(struct ueth_data *dev, u16 mode) +{ + int ret; + + debug("asix_write_medium_mode() - mode = 0x%04x\n", mode); + ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, + 0, 0, NULL); + if (ret < 0) { + debug("Failed to write Medium Mode mode to 0x%04x: %02x\n", + mode, ret); + } + return ret; +} + +static u16 asix_read_rx_ctl(struct ueth_data *dev) +{ + __le16 v; + int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, &v); + + if (ret < 0) + debug("Error reading RX_CTL register: %02x\n", ret); + else + ret = le16_to_cpu(v); + return ret; +} + +static int asix_write_rx_ctl(struct ueth_data *dev, u16 mode) +{ + int ret; + + debug("asix_write_rx_ctl() - mode = 0x%04x\n", mode); + ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL); + if (ret < 0) { + debug("Failed to write RX_CTL mode to 0x%04x: %02x\n", + mode, ret); + } + return ret; +} + +static int asix_write_gpio(struct ueth_data *dev, u16 value, int sleep) +{ + int ret; + + debug("asix_write_gpio() - value = 0x%04x\n", value); + ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL); + if (ret < 0) { + debug("Failed to write GPIO value 0x%04x: %02x\n", + value, ret); + } + if (sleep) + udelay(sleep * 1000); + + return ret; +} + +/* + * mii commands + */ + +/* + * mii_nway_restart - restart NWay (autonegotiation) for this interface + * + * Returns 0 on success, negative on error. + */ +static int mii_nway_restart(struct ueth_data *dev) +{ + int bmcr; + int r = -1; + + /* if autoneg is off, it's an error */ + bmcr = asix_mdio_read(dev, dev->phy_id, MII_BMCR); + + if (bmcr & BMCR_ANENABLE) { + bmcr |= BMCR_ANRESTART; + asix_mdio_write(dev, dev->phy_id, MII_BMCR, bmcr); + r = 0; + } + + return r; +} + +/* + * Asix callbacks + */ +static int asix_init(struct eth_device *eth, bd_t *bd) +{ + int embd_phy; + unsigned char buf[ETH_ALEN]; + u16 rx_ctl; + struct ueth_data *dev = (struct ueth_data *)eth->priv; + int timeout = 0; +#define TIMEOUT_RESOLUTION 50 /* ms */ + int link_detected; + + debug("** %s()\n", __func__); + + if (asix_write_gpio(dev, + AX_GPIO_RSE | AX_GPIO_GPO_2 | AX_GPIO_GPO2EN, 5) < 0) + goto out_err; + + /* 0x10 is the phy id of the embedded 10/100 ethernet phy */ + embd_phy = ((asix_get_phy_addr(dev) & 0x1f) == 0x10 ? 1 : 0); + if (asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT, + embd_phy, 0, 0, NULL) < 0) { + debug("Select PHY #1 failed\n"); + goto out_err; + } + + if (asix_sw_reset(dev, AX_SWRESET_IPPD | AX_SWRESET_PRL) < 0) + goto out_err; + + if (asix_sw_reset(dev, AX_SWRESET_CLEAR) < 0) + goto out_err; + + if (embd_phy) { + if (asix_sw_reset(dev, AX_SWRESET_IPRL) < 0) + goto out_err; + } else { + if (asix_sw_reset(dev, AX_SWRESET_PRTE) < 0) + goto out_err; + } + + rx_ctl = asix_read_rx_ctl(dev); + debug("RX_CTL is 0x%04x after software reset\n", rx_ctl); + if (asix_write_rx_ctl(dev, 0x0000) < 0) + goto out_err; + + rx_ctl = asix_read_rx_ctl(dev); + debug("RX_CTL is 0x%04x setting to 0x0000\n", rx_ctl); + + /* Get the MAC address */ + if (asix_read_cmd(dev, AX_CMD_READ_NODE_ID, + 0, 0, ETH_ALEN, buf) < 0) { + debug("Failed to read MAC address.\n"); + goto out_err; + } + memcpy(eth->enetaddr, buf, ETH_ALEN); + debug("MAC %02x:%02x:%02x:%02x:%02x:%02x\n", + eth->enetaddr[0], eth->enetaddr[1], + eth->enetaddr[2], eth->enetaddr[3], + eth->enetaddr[4], eth->enetaddr[5]); + + dev->phy_id = asix_get_phy_addr(dev); + if (dev->phy_id < 0) + debug("Failed to read phy id\n"); + + if (asix_sw_reset(dev, AX_SWRESET_PRL) < 0) + goto out_err; + + if (asix_sw_reset(dev, AX_SWRESET_IPRL | AX_SWRESET_PRL) < 0) + goto out_err; + + asix_mdio_write(dev, dev->phy_id, MII_BMCR, BMCR_RESET); + asix_mdio_write(dev, dev->phy_id, MII_ADVERTISE, + ADVERTISE_ALL | ADVERTISE_CSMA); + mii_nway_restart(dev); + + if (asix_write_medium_mode(dev, AX88772_MEDIUM_DEFAULT) < 0) + goto out_err; + + if (asix_write_cmd(dev, AX_CMD_WRITE_IPG0, + AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT, + AX88772_IPG2_DEFAULT, 0, NULL) < 0) { + debug("Write IPG,IPG1,IPG2 failed\n"); + goto out_err; + } + + if (asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL) < 0) + goto out_err; + + do { + link_detected = asix_mdio_read(dev, dev->phy_id, MII_BMSR) & + BMSR_LSTATUS; + if (!link_detected) { + if (timeout == 0) + printf("Waiting for Ethernet connection... "); + udelay(TIMEOUT_RESOLUTION * 1000); + timeout += TIMEOUT_RESOLUTION; + } + } while (!link_detected && timeout < PHY_CONNECT_TIMEOUT); + if (link_detected) { + if (timeout != 0) + printf("done.\n"); + } else { + printf("unable to connect.\n"); + goto out_err; + } + + return 0; +out_err: + return -1; +} + +static int asix_send(struct eth_device *eth, volatile void *packet, int length) +{ + struct ueth_data *dev = (struct ueth_data *)eth->priv; + int err; + u32 packet_len; + int actual_len; + unsigned char msg[PKTSIZE + sizeof(packet_len)]; + + debug("** %s(), len %d\n", __func__, length); + + packet_len = (((length) ^ 0x0000ffff) << 16) + (length); + cpu_to_le32s(&packet_len); + + memcpy(msg, &packet_len, sizeof(packet_len)); + memcpy(msg + sizeof(packet_len), (void *)packet, length); + if (length & 1) + length++; + + err = usb_bulk_msg(dev->pusb_dev, + usb_sndbulkpipe(dev->pusb_dev, dev->ep_out), + (void *)msg, + length + sizeof(packet_len), + &actual_len, + USB_BULK_SEND_TIMEOUT); + debug("Tx: len = %u, actual = %u, err = %d\n", + length + sizeof(packet_len), actual_len, err); + + return err; +} + +static int asix_recv(struct eth_device *eth) +{ + struct ueth_data *dev = (struct ueth_data *)eth->priv; + static unsigned char recv_buf[AX_RX_URB_SIZE]; + unsigned char *buf_ptr; + int err; + int actual_len; + u32 packet_len; + + debug("** %s()\n", __func__); + + err = usb_bulk_msg(dev->pusb_dev, + usb_rcvbulkpipe(dev->pusb_dev, dev->ep_in), + (void *)recv_buf, + AX_RX_URB_SIZE, + &actual_len, + USB_BULK_RECV_TIMEOUT); + debug("Rx: len = %u, actual = %u, err = %d\n", AX_RX_URB_SIZE, + actual_len, err); + if (err != 0) { + debug("Rx: failed to receive\n"); + return -1; + } + if (actual_len > AX_RX_URB_SIZE) { + debug("Rx: received too many bytes %d\n", actual_len); + return -1; + } + + buf_ptr = recv_buf; + while (actual_len > 0) { + /* + * 1st 4 bytes contain the length of the actual data as two + * complementary 16-bit words. Extract the length of the data. + */ + if (actual_len < sizeof(packet_len)) { + debug("Rx: incomplete packet length\n"); + return -1; + } + memcpy(&packet_len, buf_ptr, sizeof(packet_len)); + le32_to_cpus(&packet_len); + if (((packet_len >> 16) ^ 0xffff) != (packet_len & 0xffff)) { + debug("Rx: malformed packet length: %#x (%#x:%#x)\n", + packet_len, (packet_len >> 16) ^ 0xffff, + packet_len & 0xffff); + return -1; + } + packet_len = packet_len & 0xffff; + if (packet_len > actual_len - sizeof(packet_len)) { + debug("Rx: too large packet: %d\n", packet_len); + return -1; + } + + /* Notify net stack */ + NetReceive(buf_ptr + sizeof(packet_len), packet_len); + + /* Adjust for next iteration. Packets are padded to 16-bits */ + if (packet_len & 1) + packet_len++; + actual_len -= sizeof(packet_len) + packet_len; + buf_ptr += sizeof(packet_len) + packet_len; + } + + return err; +} + +static void asix_halt(struct eth_device *eth) +{ + debug("** %s()\n", __func__); +} + +/* + * Asix probing functions + */ +void asix_eth_before_probe(void) +{ + curr_eth_dev = 0; +} + +struct asix_dongle { + unsigned short vendor; + unsigned short product; +}; + +static struct asix_dongle asix_dongles[] = { + { 0x05ac, 0x1402 }, /* Apple USB Ethernet Adapter */ + { 0x07d1, 0x3c05 }, /* D-Link DUB-E100 H/W Ver B1 */ + { 0x0b95, 0x772a }, /* Cables-to-Go USB Ethernet Adapter */ + { 0x0b95, 0x7720 }, /* Trendnet TU2-ET100 V3.0R */ + { 0x0b95, 0x1720 }, /* SMC */ + { 0x0db0, 0xa877 }, /* MSI - ASIX 88772a */ + { 0x13b1, 0x0018 }, /* Linksys 200M v2.1 */ + { 0x1557, 0x7720 }, /* 0Q0 cable ethernet */ + { 0x2001, 0x3c05 }, /* DLink DUB-E100 H/W Ver B1 Alternate */ + { 0x0000, 0x0000 } /* END - Do not remove */ +}; + +/* Probe to see if a new device is actually an asix device */ +int asix_eth_probe(struct usb_device *dev, unsigned int ifnum, + struct ueth_data *ss) +{ + struct usb_interface *iface; + struct usb_interface_descriptor *iface_desc; + int i; + + /* let's examine the device now */ + iface = &dev->config.if_desc[ifnum]; + iface_desc = &dev->config.if_desc[ifnum].desc; + + for (i = 0; asix_dongles[i].vendor != 0; i++) { + if (dev->descriptor.idVendor == asix_dongles[i].vendor && + dev->descriptor.idProduct == asix_dongles[i].product) + /* Found a supported dongle */ + break; + } + + if (asix_dongles[i].vendor == 0) + return 0; + + memset(ss, 0, sizeof(struct ueth_data)); + + /* At this point, we know we've got a live one */ + debug("\n\nUSB Ethernet device detected: %#04x:%#04x\n", + dev->descriptor.idVendor, dev->descriptor.idProduct); + + /* Initialize the ueth_data structure with some useful info */ + ss->ifnum = ifnum; + ss->pusb_dev = dev; + ss->subclass = iface_desc->bInterfaceSubClass; + ss->protocol = iface_desc->bInterfaceProtocol; + + /* + * We are expecting a minimum of 3 endpoints - in, out (bulk), and + * int. We will ignore any others. + */ + for (i = 0; i < iface_desc->bNumEndpoints; i++) { + /* is it an BULK endpoint? */ + if ((iface->ep_desc[i].bmAttributes & + USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) { + if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN) + ss->ep_in = iface->ep_desc[i].bEndpointAddress & + USB_ENDPOINT_NUMBER_MASK; + else + ss->ep_out = + iface->ep_desc[i].bEndpointAddress & + USB_ENDPOINT_NUMBER_MASK; + } + + /* is it an interrupt endpoint? */ + if ((iface->ep_desc[i].bmAttributes & + USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) { + ss->ep_int = iface->ep_desc[i].bEndpointAddress & + USB_ENDPOINT_NUMBER_MASK; + ss->irqinterval = iface->ep_desc[i].bInterval; + } + } + debug("Endpoints In %d Out %d Int %d\n", + ss->ep_in, ss->ep_out, ss->ep_int); + + /* Do some basic sanity checks, and bail if we find a problem */ + if (usb_set_interface(dev, iface_desc->bInterfaceNumber, 0) || + !ss->ep_in || !ss->ep_out || !ss->ep_int) { + debug("Problems with device\n"); + return 0; + } + dev->privptr = (void *)ss; + return 1; +} + +int asix_eth_get_info(struct usb_device *dev, struct ueth_data *ss, + struct eth_device *eth) +{ + if (!eth) { + debug("%s: missing parameter.\n", __func__); + return 0; + } + sprintf(eth->name, "%s%d", ASIX_BASE_NAME, curr_eth_dev++); + eth->init = asix_init; + eth->send = asix_send; + eth->recv = asix_recv; + eth->halt = asix_halt; + eth->priv = ss; + + return 1; +} diff --git a/drivers/usb/eth/usb_ether.c b/drivers/usb/eth/usb_ether.c index c2342ed..9e3d006 100644 --- a/drivers/usb/eth/usb_ether.c +++ b/drivers/usb/eth/usb_ether.c @@ -38,6 +38,13 @@ struct usb_eth_prob_dev {
/* driver functions go here, each bracketed by #ifdef CONFIG_USB_ETHER_xxx */ static const struct usb_eth_prob_dev prob_dev[] = { +#ifdef CONFIG_USB_ETHER_ASIX + { + .before_probe = asix_eth_before_probe, + .probe = asix_eth_probe, + .get_info = asix_eth_get_info, + }, +#endif { }, /* END */ };
diff --git a/include/usb_ether.h b/include/usb_ether.h index 31cbc8d..825c275 100644 --- a/include/usb_ether.h +++ b/include/usb_ether.h @@ -57,5 +57,12 @@ struct ueth_data { * Function definitions for each USB ethernet driver go here, bracketed by * #ifdef CONFIG_USB_ETHER_xxx...#endif */ +#ifdef CONFIG_USB_ETHER_ASIX +void asix_eth_before_probe(void); +int asix_eth_probe(struct usb_device *dev, unsigned int ifnum, + struct ueth_data *ss); +int asix_eth_get_info(struct usb_device *dev, struct ueth_data *ss, + struct eth_device *eth); +#endif
#endif /* __USB_ETHER_H__ */
Hi,
2011/2/8 Simon Glass sjg@chromium.org:
This adds support for using USB Ethernet dongles in host mode. This is just the framework - drivers will come later. A new config option called CONFIG_USB_HOST_ETHER can be defined in board config files to switch this on.
The was originally written by NVIDIA and was cleaned up for release by the Chromium authors.
Signed-off-by: Simon Glass sjg@chromium.org
Makefile | 1 + common/cmd_usb.c | 12 +++- common/usb.c | 6 ++- doc/README.usb | 4 +- drivers/usb/eth/Makefile | 45 ++++++++++++++ drivers/usb/eth/usb_ether.c | 143 +++++++++++++++++++++++++++++++++++++++++++ include/usb.h | 9 +++- include/usb_ether.h | 61 ++++++++++++++++++ net/eth.c | 47 +++++++-------- 9 files changed, 298 insertions(+), 30 deletions(-) create mode 100644 drivers/usb/eth/Makefile create mode 100644 drivers/usb/eth/usb_ether.c create mode 100644 include/usb_ether.h
This patch does not seem to apply to u-boot-usb master branch... Can you please take a look at it?
Kind regards,
Remy
Yes, please see my post. Sorry for the delay. I have trouble building the u-boot-usb master branch. Are all boards supposed to build correct in that branch? - Simon
On Fri, Feb 11, 2011 at 12:33 PM, Remy Bohmer linux@bohmer.net wrote:
Hi,
2011/2/8 Simon Glass sjg@chromium.org:
This adds support for using USB Ethernet dongles in host mode. This is just the framework - drivers will come later. A new config option called CONFIG_USB_HOST_ETHER can be defined in board config files to switch this on.
The was originally written by NVIDIA and was cleaned up for release by the Chromium authors.
Signed-off-by: Simon Glass sjg@chromium.org
Makefile | 1 + common/cmd_usb.c | 12 +++- common/usb.c | 6 ++- doc/README.usb | 4 +- drivers/usb/eth/Makefile | 45 ++++++++++++++ drivers/usb/eth/usb_ether.c | 143 +++++++++++++++++++++++++++++++++++++++++++ include/usb.h | 9 +++- include/usb_ether.h | 61 ++++++++++++++++++ net/eth.c | 47 +++++++-------- 9 files changed, 298 insertions(+), 30 deletions(-) create mode 100644 drivers/usb/eth/Makefile create mode 100644 drivers/usb/eth/usb_ether.c create mode 100644 include/usb_ether.h
This patch does not seem to apply to u-boot-usb master branch... Can you please take a look at it?
Kind regards,
Remy
Hi,
2011/2/16 Simon Glass sjg@chromium.org:
Yes, please see my post. Sorry for the delay. I have trouble building the u-boot-usb master branch. Are all boards supposed to build correct in that branch? - Simon
The master of u-boot-usb is basically mainstream u-boot. And as with mainstream u-boot, many ARM boards are broken...
Kind regards,
Remy
participants (2)
-
Remy Bohmer -
Simon Glass