while compilation of implemented routines and references from calling sites may be optional, declarations in header files should not be

unconditionally declare the Asix and SMSC related public USB ethernet driver routines in the usb_ether.h header file

Cc: Simon Glass sjg@chromium.org Signed-off-by: Gerhard Sittig gsi@denx.de --- include/usb_ether.h | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/include/usb_ether.h b/include/usb_ether.h index 678c9dff2524..011ead7a364e 100644 --- a/include/usb_ether.h +++ b/include/usb_ether.h @@ -40,23 +40,19 @@ struct ueth_data { };

/* - * Function definitions for each USB ethernet driver go here, bracketed by - * #ifdef CONFIG_USB_ETHER_xxx...#endif + * Function definitions for each USB ethernet driver go here + * (declaration is unconditional, compilation is conditional) */ -#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

-#ifdef CONFIG_USB_ETHER_SMSC95XX void smsc95xx_eth_before_probe(void); int smsc95xx_eth_probe(struct usb_device *dev, unsigned int ifnum, struct ueth_data *ss); int smsc95xx_eth_get_info(struct usb_device *dev, struct ueth_data *ss, struct eth_device *eth); -#endif

#endif /* __USB_ETHER_H__ */

introduce an 'mcs7830' driver for Moschip based USB ethernet adapters, which was implemented based on the U-Boot Asix driver with additional information gathered from the Moschip Linux driver

Cc: Joe Hershberger joe.hershberger@gmail.com Cc: Simon Glass sjg@chromium.org Cc: Marek Vasut marex@denx.de Signed-off-by: Gerhard Sittig gsi@denx.de --- drivers/usb/eth/Makefile | 1 + drivers/usb/eth/mcs7830.c | 850 +++++++++++++++++++++++++++++++++++++++++++ drivers/usb/eth/usb_ether.c | 7 + include/usb_ether.h | 6 + 4 files changed, 864 insertions(+) create mode 100644 drivers/usb/eth/mcs7830.c

diff --git a/drivers/usb/eth/Makefile b/drivers/usb/eth/Makefile index 03f54749f720..94551c4c0c9a 100644 --- a/drivers/usb/eth/Makefile +++ b/drivers/usb/eth/Makefile @@ -8,4 +8,5 @@ obj-$(CONFIG_USB_HOST_ETHER) += usb_ether.o ifdef CONFIG_USB_ETHER_ASIX obj-y += asix.o endif +obj-$(CONFIG_USB_ETHER_MCS7830) += mcs7830.o obj-$(CONFIG_USB_ETHER_SMSC95XX) += smsc95xx.o diff --git a/drivers/usb/eth/mcs7830.c b/drivers/usb/eth/mcs7830.c new file mode 100644 index 000000000000..991e2ee8f424 --- /dev/null +++ b/drivers/usb/eth/mcs7830.c @@ -0,0 +1,850 @@ +/* + * Copyright (c) 2013 Gerhard Sittig gsi@denx.de + * based on the U-Boot Asix driver as well as information + * from the Linux Moschip driver + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* + * MOSCHIP MCS7830 based (7730/7830/7832) USB 2.0 Ethernet Devices + */ + +#include <common.h> +#include <errno.h> +#include <linux/mii.h> +#include <malloc.h> +#include <usb.h> + +#include "usb_ether.h" + +#define MCS7830_BASE_NAME "mcs" + +#define USBCALL_TIMEOUT 1000 +#define LINKSTATUS_TIMEOUT 5000 /* link status, connect timeout */ +#define LINKSTATUS_TIMEOUT_RES 50 /* link status, resolution in msec */ + +#define MCS7830_RX_URB_SIZE 2048 + +/* command opcodes */ +#define MCS7830_WR_BREQ 0x0d +#define MCS7830_RD_BREQ 0x0e + +/* register layout, numerical offset specs for USB API calls */ +struct mcs7830_regs { + uint8_t multicast_hashes[8]; + uint8_t packet_gap[2]; + uint8_t phy_data[2]; + uint8_t phy_command[2]; + uint8_t configuration; + uint8_t ether_address[6]; + uint8_t frame_drop_count; + uint8_t pause_threshold; +}; +#define REG_MULTICAST_HASH offsetof(struct mcs7830_regs, multicast_hashes) +#define REG_PHY_DATA offsetof(struct mcs7830_regs, phy_data) +#define REG_PHY_CMD offsetof(struct mcs7830_regs, phy_command) +#define REG_CONFIG offsetof(struct mcs7830_regs, configuration) +#define REG_ETHER_ADDR offsetof(struct mcs7830_regs, ether_address) +#define REG_FRAME_DROP_COUNTER offsetof(struct mcs7830_regs, frame_drop_count) +#define REG_PAUSE_THRESHOLD offsetof(struct mcs7830_regs, pause_threshold) + +/* bit masks and default values for the above registers */ +#define PHY_CMD1_READ BIT(6) +#define PHY_CMD1_WRITE BIT(5) +#define PHY_CMD1_PHYADDR BIT(0) + +#define PHY_CMD2_PEND BIT(7) +#define PHY_CMD2_READY BIT(6) + +#define CONF_CFG BIT(7) +#define CONF_SPEED100 BIT(6) +#define CONF_FDX_ENABLE BIT(5) +#define CONF_RXENABLE BIT(4) +#define CONF_TXENABLE BIT(3) +#define CONF_SLEEPMODE BIT(2) +#define CONF_ALLMULTICAST BIT(1) +#define CONF_PROMISCUOUS BIT(0) + +#define PAUSE_THRESHOLD_DEFAULT 0 + +/* bit masks for the status byte which follows received ethernet frames */ +#define STAT_RX_FRAME_CORRECT BIT(5) +#define STAT_RX_LARGE_FRAME BIT(4) +#define STAT_RX_CRC_ERROR BIT(3) +#define STAT_RX_ALIGNMENT_ERROR BIT(2) +#define STAT_RX_LENGTH_ERROR BIT(1) +#define STAT_RX_SHORT_FRAME BIT(0) + +/* + * struct mcs7830_private - private driver data for an individual adapter + * @config: shadow for the network adapter's configuration register + * @mchash: shadow for the network adapter's multicast hash registers + */ +struct mcs7830_private { + uint8_t config; + uint8_t mchash[8]; +}; + +/* + * mcs7830_read_reg() - read a register of the network adapter + * @dev: network device to read from + * @idx: index of the register to start reading from + * @size: number of bytes to read + * @data: buffer to read into + * Return: zero upon success, negative upon error + */ +static int mcs7830_read_reg(struct ueth_data *dev, uint8_t idx, + uint16_t size, void *data) +{ + int len; + ALLOC_CACHE_ALIGN_BUFFER(uint8_t, buf, size); + + debug("%s() idx=0x%04X sz=%d\n", __func__, idx, size); + + len = usb_control_msg(dev->pusb_dev, + usb_rcvctrlpipe(dev->pusb_dev, 0), + MCS7830_RD_BREQ, + USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + 0, idx, buf, size, + USBCALL_TIMEOUT); + if (len != size) { + debug("%s() len=%d != sz=%d\n", __func__, len, size); + return -EIO; + } + memcpy(data, buf, size); + return 0; +} + +/* + * mcs7830_write_reg() - write a register of the network adapter + * @dev: network device to write to + * @idx: index of the register to start writing to + * @size: number of bytes to write + * @data: buffer holding the data to write + * Return: zero upon success, negative upon error + */ +static int mcs7830_write_reg(struct ueth_data *dev, uint8_t idx, + uint16_t size, void *data) +{ + int len; + ALLOC_CACHE_ALIGN_BUFFER(uint8_t, buf, size); + + debug("%s() idx=0x%04X sz=%d\n", __func__, idx, size); + + memcpy(buf, data, size); + len = usb_control_msg(dev->pusb_dev, + usb_sndctrlpipe(dev->pusb_dev, 0), + MCS7830_WR_BREQ, + USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + 0, idx, buf, size, + USBCALL_TIMEOUT); + if (len != size) { + debug("%s() len=%d != sz=%d\n", __func__, len, size); + return -EIO; + } + return 0; +} + +/* + * mcs7830_phy_emit_wait() - emit PHY read/write access, wait for its execution + * @dev: network device to talk to + * @rwflag: PHY_CMD1_READ or PHY_CMD1_WRITE opcode + * @index: number of the PHY register to read or write + * Return: zero upon success, negative upon error + */ +static int mcs7830_phy_emit_wait(struct ueth_data *dev, + uint8_t rwflag, uint8_t index) +{ + int rc; + int retry; + uint8_t cmd[2]; + + /* send the PHY read/write request */ + cmd[0] = rwflag | PHY_CMD1_PHYADDR; + cmd[1] = PHY_CMD2_PEND | (index & 0x1f); + rc = mcs7830_write_reg(dev, REG_PHY_CMD, sizeof(cmd), cmd); + if (rc < 0) + return rc; + + /* wait for the response to become available (usually < 1ms) */ + retry = 10; + do { + rc = mcs7830_read_reg(dev, REG_PHY_CMD, sizeof(cmd), cmd); + if (rc < 0) + return rc; + if (cmd[1] & PHY_CMD2_READY) + return 0; + if (!retry--) + return -ETIMEDOUT; + mdelay(1); + } while (1); + /* UNREACH */ +} + +/* + * mcs7830_read_phy() - read a PHY register of the network adapter + * @dev: network device to read from + * @index: index of the PHY register to read from + * Return: non-negative 16bit register content, negative upon error + */ +static int mcs7830_read_phy(struct ueth_data *dev, uint8_t index) +{ + int rc; + uint16_t val; + + /* send the PHY read request */ + /* issue the PHY read request and wait for its execution */ + rc = mcs7830_phy_emit_wait(dev, PHY_CMD1_READ, index); + if (rc < 0) + return rc; + + /* fetch the PHY data which was read */ + rc = mcs7830_read_reg(dev, REG_PHY_DATA, sizeof(val), &val); + if (rc < 0) + return rc; + rc = le16_to_cpu(val); + debug("%s(%s, %d) => 0x%04X\n", __func__, dev->eth_dev.name, index, rc); + return rc; +} + +/* + * mcs7830_write_phy() - write a PHY register of the network adapter + * @dev: network device to write to + * @index: index of the PHY register to write to + * @val: value to write to the PHY register + * Return: zero upon success, negative upon error + */ +static int mcs7830_write_phy(struct ueth_data *dev, uint8_t index, uint16_t val) +{ + int rc; + + debug("%s(%s, %d, 0x%04X)\n", __func__, dev->eth_dev.name, index, val); + + /* setup the PHY data which is to get written */ + val = cpu_to_le16(val); + rc = mcs7830_write_reg(dev, REG_PHY_DATA, sizeof(val), &val); + if (rc < 0) + return rc; + + /* issue the PHY write request and wait for its execution */ + rc = mcs7830_phy_emit_wait(dev, PHY_CMD1_WRITE, index); + if (rc < 0) + return rc; + + return 0; +} + +/* + * mcs7830_read_config() - read the network adapter's config register + * @eth: network device to read from + * Return: non-negative register content upon success, negative upon error + */ +static int __maybe_unused mcs7830_read_config(struct eth_device *eth) +{ + struct ueth_data *dev; + int rc; + uint8_t cfg; + + debug("%s()\n", __func__); + dev = eth->priv; + + rc = mcs7830_read_reg(dev, REG_CONFIG, sizeof(cfg), &cfg); + if (rc < 0) { + debug("reading config from adapter failed\n"); + return rc; + } + + debug("%s() reg=0x%02X [ %s %s %s %s %s %s %s %s ]\n", + __func__, cfg, + (cfg & CONF_CFG) ? "cfg" : "-", + (cfg & CONF_SPEED100) ? "100" : "-", + (cfg & CONF_FDX_ENABLE) ? "fdx" : "-", + (cfg & CONF_RXENABLE) ? "rx" : "-", + (cfg & CONF_TXENABLE) ? "tx" : "-", + (cfg & CONF_SLEEPMODE) ? "sleep" : "-", + (cfg & CONF_ALLMULTICAST) ? "multi" : "-", + (cfg & CONF_PROMISCUOUS) ? "promisc" : "-"); + return cfg; +} + +/* + * mcs7830_write_config() - write to the network adapter's config register + * @eth: network device to write to + * Return: zero upon success, negative upon error + * + * the data which gets written is taken from the shadow config register + * within the device driver's private data + */ +static int mcs7830_write_config(struct ueth_data *dev) +{ + struct mcs7830_private *priv; + int rc; + + debug("%s()\n", __func__); + priv = dev->dev_priv; + + rc = mcs7830_write_reg(dev, REG_CONFIG, + sizeof(priv->config), &priv->config); + if (rc < 0) { + debug("writing config to adapter failed\n"); + return rc; + } + + return 0; +} + +/* + * mcs7830_write_mchash() - write the network adapter's multicast filter + * @eth: network device to write to + * Return: zero upon success, negative upon error + * + * the data which gets written is taken from the shadow multicast hashes + * within the device driver's private data + */ +static int mcs7830_write_mchash(struct ueth_data *dev) +{ + struct mcs7830_private *priv; + int rc; + + debug("%s()\n", __func__); + priv = dev->dev_priv; + + rc = mcs7830_write_reg(dev, REG_MULTICAST_HASH, + sizeof(priv->mchash), &priv->mchash); + if (rc < 0) { + debug("writing multicast hash to adapter failed\n"); + return rc; + } + + return 0; +} + +/* + * mcs7830_set_autoneg() - setup and trigger ethernet link autonegotiation + * @eth: network device to run link negotiation on + * Return: zero upon success, negative upon error + * + * the routine advertises available media and starts autonegotiation + */ +static int mcs7830_set_autoneg(struct ueth_data *dev) +{ + int adv, flg; + int rc; + + debug("%s()\n", __func__); + + /* + * algorithm taken from the Linux driver, which took it from + * "the original mcs7830 version 1.4 driver": + * + * enable all media, reset BMCR, enable auto neg, restart + * auto neg while keeping the enable auto neg flag set + */ + + adv = ADVERTISE_PAUSE_CAP | ADVERTISE_ALL | ADVERTISE_CSMA; + rc = mcs7830_write_phy(dev, MII_ADVERTISE, adv); + + flg = 0; + if (!rc) + rc = mcs7830_write_phy(dev, MII_BMCR, flg); + + flg |= BMCR_ANENABLE; + if (!rc) + rc = mcs7830_write_phy(dev, MII_BMCR, flg); + + flg |= BMCR_ANRESTART; + if (!rc) + rc = mcs7830_write_phy(dev, MII_BMCR, flg); + + return rc; +} + +/* + * mcs7830_get_rev() - identify a network adapter's chip revision + * @eth: network device to identify + * Return: non-negative number, reflecting the revision number + * + * currently, only "rev C and higher" and "below rev C" are needed, so + * the return value is #1 for "below rev C", and #2 for "rev C and above" + */ +static int mcs7830_get_rev(struct ueth_data *dev) +{ + uint8_t buf[2]; + int rc; + int rev; + + /* register 22 is readable in rev C and higher */ + rc = mcs7830_read_reg(dev, REG_FRAME_DROP_COUNTER, sizeof(buf), buf); + if (rc < 0) + rev = 1; + else + rev = 2; + debug("%s() rc=%d, rev=%d\n", __func__, rc, rev); + return rev; +} + +/* + * mcs7830_apply_fixup() - identify an adapter and potentially apply fixups + * @eth: network device to identify and apply fixups to + * Return: zero upon success (no errors emitted from here) + * + * this routine identifies the network adapter's chip revision, and applies + * fixups for known issues + */ +static int mcs7830_apply_fixup(struct ueth_data *dev) +{ + int rev; + int i; + uint8_t thr; + + rev = mcs7830_get_rev(dev); + debug("%s() rev=%d\n", __func__, rev); + + /* + * rev C requires setting the pause threshold (the Linux driver + * is inconsistent, the implementation does it for "rev C + * exactly", the introductory comment says "rev C and above") + */ + if (rev == 2) { + debug("%s: applying rev C fixup\n", dev->eth_dev.name); + thr = PAUSE_THRESHOLD_DEFAULT; + for (i = 0; i < 2; i++) { + (void)mcs7830_write_reg(dev, REG_PAUSE_THRESHOLD, + sizeof(thr), &thr); + mdelay(1); + } + } + + return 0; +} + +/* + * mcs7830_basic_reset() - bring the network adapter into a known first state + * @eth: network device to act upon + * Return: zero upon success, negative upon error + * + * this routine initializes the network adapter such that subsequent invocations + * of the interface callbacks can exchange ethernet frames; link negotiation is + * triggered from here already and continues in background + */ +static int mcs7830_basic_reset(struct ueth_data *dev) +{ + struct mcs7830_private *priv; + int rc; + + debug("%s()\n", __func__); + priv = dev->dev_priv; + + /* + * comment from the respective Linux driver, which + * unconditionally sets the ALLMULTICAST flag as well: + * should not be needed, but does not work otherwise + */ + priv->config = CONF_TXENABLE; + priv->config |= CONF_ALLMULTICAST; + + rc = mcs7830_set_autoneg(dev); + if (rc < 0) { + error("setting autoneg failed\n"); + return rc; + } + + rc = mcs7830_write_mchash(dev); + if (rc < 0) { + error("failed to set multicast hash\n"); + return rc; + } + + rc = mcs7830_write_config(dev); + if (rc < 0) { + error("failed to set configuration\n"); + return rc; + } + + rc = mcs7830_apply_fixup(dev); + if (rc < 0) { + error("fixup application failed\n"); + return rc; + } + + return 0; +} + +/* + * mcs7830_read_mac() - read an ethernet adapter's MAC address + * @eth: network device to read from + * Return: zero upon success, negative upon error + * + * this routine fetches the MAC address stored within the ethernet adapter, + * and stores it in the ethernet interface's data structure + */ +static int mcs7830_read_mac(struct eth_device *eth) +{ + struct ueth_data *dev; + int rc; + uint8_t buf[ETH_ALEN]; + + debug("%s()\n", __func__); + dev = eth->priv; + + rc = mcs7830_read_reg(dev, REG_ETHER_ADDR, ETH_ALEN, buf); + if (rc < 0) { + debug("reading MAC from adapter failed\n"); + return rc; + } + + memcpy(&eth->enetaddr[0], buf, ETH_ALEN); + return 0; +} + +/* + * mcs7830_write_mac() - write an ethernet adapter's MAC address + * @eth: network device to write to + * Return: zero upon success, negative upon error + * + * this routine takes the MAC address from the ethernet interface's data + * structure, and writes it into the ethernet adapter such that subsequent + * exchange of ethernet frames uses this address + */ +static int mcs7830_write_mac(struct eth_device *eth) +{ + struct ueth_data *dev; + int rc; + + debug("%s()\n", __func__); + dev = eth->priv; + + if (sizeof(eth->enetaddr) != ETH_ALEN) + return -EINVAL; + rc = mcs7830_write_reg(dev, REG_ETHER_ADDR, ETH_ALEN, eth->enetaddr); + if (rc < 0) { + debug("writing MAC to adapter failed\n"); + return rc; + } + return 0; +} + +/* + * mcs7830_init() - network interface's init callback + * @eth: network device to initialize + * @bd: board information + * Return: zero upon success, negative upon error + * + * after initial setup during probe() and get_info(), this init() callback + * ensures that the link is up and subsequent send() and recv() calls can + * exchange ethernet frames + */ +static int mcs7830_init(struct eth_device *eth, bd_t *bd) +{ + struct ueth_data *dev; + int timeout; + int have_link; + + debug("%s()\n", __func__); + dev = eth->priv; + + timeout = 0; + do { + have_link = mcs7830_read_phy(dev, MII_BMSR) & BMSR_LSTATUS; + if (have_link) + break; + udelay(LINKSTATUS_TIMEOUT_RES * 1000); + timeout += LINKSTATUS_TIMEOUT_RES; + } while (timeout < LINKSTATUS_TIMEOUT); + if (!have_link) { + debug("ethernet link is down\n"); + return -ETIMEDOUT; + } + return 0; +} + +/* + * mcs7830_send() - network interface's send callback + * @eth: network device to send the frame from + * @packet: ethernet frame content + * @length: ethernet frame length + * Return: zero upon success, negative upon error + * + * this routine send an ethernet frame out of the network interface + */ +static int mcs7830_send(struct eth_device *eth, void *packet, int length) +{ + struct ueth_data *dev; + int rc; + int gotlen; + /* there is a status byte after the ethernet frame */ + ALLOC_CACHE_ALIGN_BUFFER(uint8_t, buf, PKTSIZE + sizeof(uint8_t)); + + dev = eth->priv; + + memcpy(buf, packet, length); + rc = usb_bulk_msg(dev->pusb_dev, + usb_sndbulkpipe(dev->pusb_dev, dev->ep_out), + &buf[0], length, &gotlen, + USBCALL_TIMEOUT); + debug("%s() TX want len %d, got len %d, rc %d\n", + __func__, length, gotlen, rc); + return rc; +} + +/* + * mcs7830_recv() - network interface's recv callback + * @eth: network device to receive frames from + * Return: zero upon success, negative upon error + * + * this routine checks for available ethernet frames that the network + * interface might have received, and notifies the network stack + */ +static int mcs7830_recv(struct eth_device *eth) +{ + struct ueth_data *dev; + ALLOC_CACHE_ALIGN_BUFFER(uint8_t, buf, MCS7830_RX_URB_SIZE); + int rc, wantlen, gotlen; + uint8_t sts; + + debug("%s()\n", __func__); + dev = eth->priv; + + /* fetch input data from the adapter */ + wantlen = MCS7830_RX_URB_SIZE; + rc = usb_bulk_msg(dev->pusb_dev, + usb_rcvbulkpipe(dev->pusb_dev, dev->ep_in), + &buf[0], wantlen, &gotlen, + USBCALL_TIMEOUT); + debug("%s() RX want len %d, got len %d, rc %d\n", + __func__, wantlen, gotlen, rc); + if (rc != 0) { + error("RX: failed to receive\n"); + return rc; + } + if (gotlen > wantlen) { + error("RX: got too many bytes (%d)\n", gotlen); + return -EIO; + } + + /* + * the bulk message that we received from USB contains exactly + * one ethernet frame and a trailing status byte + */ + if (gotlen < sizeof(sts)) + return -EIO; + gotlen -= sizeof(sts); + sts = buf[gotlen]; + + if (sts == STAT_RX_FRAME_CORRECT) { + debug("%s() got a frame, len=%d\n", __func__, gotlen); + NetReceive(buf, gotlen); + return 0; + } + + debug("RX: frame error (sts 0x%02X, %s %s %s %s %s)\n", + sts, + (sts & STAT_RX_LARGE_FRAME) ? "large" : "-", + (sts & STAT_RX_LENGTH_ERROR) ? "length" : "-", + (sts & STAT_RX_SHORT_FRAME) ? "short" : "-", + (sts & STAT_RX_CRC_ERROR) ? "crc" : "-", + (sts & STAT_RX_ALIGNMENT_ERROR) ? "align" : "-"); + return -EIO; +} + +/* + * mcs7830_halt() - network interface's halt callback + * @eth: network device to cease operation of + * Return: none + * + * this routine is supposed to undo the effect of previous initialization and + * ethernet frames exchange; in this implementation it's a NOP + */ +static void mcs7830_halt(struct eth_device *eth) +{ + debug("%s()\n", __func__); +} + +/* + * mcs7830_iface_idx - index of detected network interfaces + * + * this counter keeps track of identified supported interfaces, + * to assign unique names as more interfaces are found + */ +static int mcs7830_iface_idx; + +/* + * mcs7830_eth_before_probe() - network driver's before_probe callback + * Return: none + * + * this routine initializes driver's internal data in preparation of + * subsequent probe callbacks + */ +void mcs7830_eth_before_probe(void) +{ + mcs7830_iface_idx = 0; +} + +/* + * struct mcs7830_dongle - description of a supported Moschip ethernet dongle + * @vendor: 16bit USB vendor identification + * @product: 16bit USB product identification + * + * this structure describes a supported USB ethernet dongle by means of the + * vendor and product codes found during USB enumeration; no flags are held + * here since all supported dongles have identical behaviour, and required + * fixups get determined at runtime, such that no manual configuration is + * needed + */ +struct mcs7830_dongle { + uint16_t vendor; + uint16_t product; +}; + +/* + * mcs7830_dongles - the list of supported Moschip based USB ethernet dongles + */ +static const struct mcs7830_dongle const mcs7830_dongles[] = { + { 0x9710, 0x7832, }, /* Moschip 7832 */ + { 0x9710, 0x7830, }, /* Moschip 7830 */ + { 0x9710, 0x7730, }, /* Moschip 7730 */ + { 0x0df6, 0x0021, }, /* Sitecom LN 30 */ +}; + +/* + * mcs7830_eth_probe() - network driver's probe callback + * @dev: detected USB device to check + * @ifnum: detected USB interface to check + * @ss: USB ethernet data structure to fill in upon match + * Return: #1 upon match, #0 upon mismatch or error + * + * this routine checks whether the found USB device is supported by + * this ethernet driver, and upon match fills in the USB ethernet + * data structure which later is passed to the get_info callback + */ +int mcs7830_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; + struct mcs7830_private *priv; + int ep_in_found, ep_out_found, ep_intr_found; + + debug("%s()\n", __func__); + + /* iterate the list of supported dongles */ + iface = &dev->config.if_desc[ifnum]; + iface_desc = &iface->desc; + for (i = 0; i < ARRAY_SIZE(mcs7830_dongles); i++) { + if (dev->descriptor.idVendor == mcs7830_dongles[i].vendor && + dev->descriptor.idProduct == mcs7830_dongles[i].product) + break; + } + if (i == ARRAY_SIZE(mcs7830_dongles)) + return 0; + debug("detected USB ethernet device: %04X:%04X\n", + dev->descriptor.idVendor, dev->descriptor.idProduct); + + /* fill in driver private data */ + priv = calloc(1, sizeof(*priv)); + if (!priv) + return 0; + + /* fill in the ueth_data structure, attach private data */ + memset(ss, 0, sizeof(*ss)); + ss->ifnum = ifnum; + ss->pusb_dev = dev; + ss->subclass = iface_desc->bInterfaceSubClass; + ss->protocol = iface_desc->bInterfaceProtocol; + ss->dev_priv = priv; + + /* + * a minimum of three endpoints is expected: in (bulk), + * out (bulk), and interrupt; ignore all others + */ + ep_in_found = ep_out_found = ep_intr_found = 0; + for (i = 0; i < iface_desc->bNumEndpoints; i++) { + uint8_t eptype, epaddr; + bool is_input; + + eptype = iface->ep_desc[i].bmAttributes; + eptype &= USB_ENDPOINT_XFERTYPE_MASK; + + epaddr = iface->ep_desc[i].bEndpointAddress; + is_input = epaddr & USB_DIR_IN; + epaddr &= USB_ENDPOINT_NUMBER_MASK; + + if (eptype == USB_ENDPOINT_XFER_BULK) { + if (is_input && !ep_in_found) { + ss->ep_in = epaddr; + ep_in_found++; + } + if (!is_input && !ep_out_found) { + ss->ep_out = epaddr; + ep_out_found++; + } + } + + if (eptype == USB_ENDPOINT_XFER_INT) { + if (is_input && !ep_intr_found) { + ss->ep_int = epaddr; + ss->irqinterval = iface->ep_desc[i].bInterval; + ep_intr_found++; + } + } + } + debug("endpoints: in %d, out %d, intr %d\n", + ss->ep_in, ss->ep_out, ss->ep_int); + + /* apply basic sanity checks */ + if (usb_set_interface(dev, iface_desc->bInterfaceNumber, 0) || + !ss->ep_in || !ss->ep_out || !ss->ep_int) { + debug("device probe incomplete\n"); + return 0; + } + + dev->privptr = ss; + return 1; +} + +/* + * mcs7830_eth_get_info() - network driver's get_info callback + * @dev: detected USB device + * @ss: USB ethernet data structure filled in at probe() + * @eth: ethernet interface data structure to fill in + * Return: #1 upon success, #0 upon error + * + * this routine registers the mandatory init(), send(), recv(), and + * halt() callbacks with the ethernet interface, can register the + * optional write_hwaddr() callback with the ethernet interface, + * and initiates configuration of the interface such that subsequent + * calls to those callbacks results in network communication + */ +int mcs7830_eth_get_info(struct usb_device *dev, struct ueth_data *ss, + struct eth_device *eth) +{ + debug("%s()\n", __func__); + if (!eth) { + debug("%s: missing parameter.\n", __func__); + return 0; + } + + snprintf(eth->name, sizeof(eth->name), "%s%d", + MCS7830_BASE_NAME, mcs7830_iface_idx++); + eth->init = mcs7830_init; + eth->send = mcs7830_send; + eth->recv = mcs7830_recv; + eth->halt = mcs7830_halt; + eth->write_hwaddr = mcs7830_write_mac; + eth->priv = ss; + + if (mcs7830_basic_reset(ss)) + return 0; + +#ifdef DEBUG + (void)mcs7830_read_config(eth); +#endif + + if (mcs7830_read_mac(eth)) + return 0; + debug("MAC %pM\n", eth->enetaddr); + + return 1; +} diff --git a/drivers/usb/eth/usb_ether.c b/drivers/usb/eth/usb_ether.c index 2c4126be3601..1dda54c2f116 100644 --- a/drivers/usb/eth/usb_ether.c +++ b/drivers/usb/eth/usb_ether.c @@ -30,6 +30,13 @@ static const struct usb_eth_prob_dev prob_dev[] = { .get_info = asix_eth_get_info, }, #endif +#ifdef CONFIG_USB_ETHER_MCS7830 + { + .before_probe = mcs7830_eth_before_probe, + .probe = mcs7830_eth_probe, + .get_info = mcs7830_eth_get_info, + }, +#endif #ifdef CONFIG_USB_ETHER_SMSC95XX { .before_probe = smsc95xx_eth_before_probe, diff --git a/include/usb_ether.h b/include/usb_ether.h index 011ead7a364e..35700a21b59f 100644 --- a/include/usb_ether.h +++ b/include/usb_ether.h @@ -49,6 +49,12 @@ int asix_eth_probe(struct usb_device *dev, unsigned int ifnum, int asix_eth_get_info(struct usb_device *dev, struct ueth_data *ss, struct eth_device *eth);

+void mcs7830_eth_before_probe(void); +int mcs7830_eth_probe(struct usb_device *dev, unsigned int ifnum, + struct ueth_data *ss); +int mcs7830_eth_get_info(struct usb_device *dev, struct ueth_data *ss, + struct eth_device *eth); + void smsc95xx_eth_before_probe(void); int smsc95xx_eth_probe(struct usb_device *dev, unsigned int ifnum, struct ueth_data *ss);

adjust the harmony and omap3_beagle board configs to make their CONFIG_USB_ETHER_* items appear in alphabetical order

Cc: Tom Warren twarren@nvidia.com Cc: Tom Rini trini@ti.com Signed-off-by: Gerhard Sittig gsi@denx.de --- include/configs/harmony.h | 2 +- include/configs/omap3_beagle.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/configs/harmony.h b/include/configs/harmony.h index d733be9cd5b6..fa66c665ec8c 100644 --- a/include/configs/harmony.h +++ b/include/configs/harmony.h @@ -61,8 +61,8 @@

/* USB networking support */ #define CONFIG_USB_HOST_ETHER -#define CONFIG_USB_ETHER_SMSC95XX #define CONFIG_USB_ETHER_ASIX +#define CONFIG_USB_ETHER_SMSC95XX

/* General networking support */ #define CONFIG_CMD_NET diff --git a/include/configs/omap3_beagle.h b/include/configs/omap3_beagle.h index c58bc91a50c5..e01a6d9547f9 100644 --- a/include/configs/omap3_beagle.h +++ b/include/configs/omap3_beagle.h @@ -120,8 +120,8 @@

#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 3 #define CONFIG_USB_HOST_ETHER -#define CONFIG_USB_ETHER_SMSC95XX #define CONFIG_USB_ETHER_ASIX +#define CONFIG_USB_ETHER_SMSC95XX

/* GPIO banks */ #define CONFIG_OMAP3_GPIO_5 /* GPIO128..159 is in GPIO bank 5 */

enabling CONFIG_MACB makes other locations in the stamp config file enable network related commands (actually prevents disabling them)

enable USB ethernet support by activating generic support as well as Asix and Moschip ethernet adapters

Cc: Markus Hubig mhubig@imko.de Signed-off-by: Gerhard Sittig gsi@denx.de --- include/configs/stamp9g20.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/configs/stamp9g20.h b/include/configs/stamp9g20.h index 51339b1496e6..01085dc5c114 100644 --- a/include/configs/stamp9g20.h +++ b/include/configs/stamp9g20.h @@ -140,7 +140,10 @@ * can enable it here if your baseboard features ethernet. */

-/* #define CONFIG_MACB */ +#define CONFIG_MACB +#define CONFIG_USB_HOST_ETHER +#define CONFIG_USB_ETHER_ASIX +#define CONFIG_USB_ETHER_MCS7830

#ifdef CONFIG_MACB # define CONFIG_RMII /* use reduced MII inteface */