[U-Boot] [PATCH v2] net: asix: add support for AX88772B
There are multiple changes needed to make AX88772B work:
1. add vendor and product ID (trivial)
2. We need to read out the MAC address from the EEPROM and write it into the NodeID register manually.
3. The packet length check has to be adjusted, as all ASIX chips only use 11 bits to indicate the length. AX88772B uses the other bits to indicate unrelated things, which cause the check to fail. This fix is based on a fix for the Linux kernel by Marek Vasut. Linux upstream commit: bca0beb9363f8487ac902931a50eb00180a2d14a
4. AX88772B provides several bulk endpoints. Only the first IN/OUT endpoints work in the default configuration. So stop enumeration after we found them to avoid overwriting the endpoint config with a non-working one.
This was tested to work on a Colibri T20 board. Patch is based on u-boot-net/next.
v2: - split out eeprom mac load into separate function - add flags to driver to get a clean way to enable workarounds or special functions
Signed-off-by: Lucas Stach dev@lynxeye.de --- drivers/usb/eth/asix.c | 91 ++++++++++++++++++++++++++++++++++++++------------ include/usb_ether.h | 3 ++ 2 Dateien geändert, 73 Zeilen hinzugefügt(+), 21 Zeilen entfernt(-)
diff --git a/drivers/usb/eth/asix.c b/drivers/usb/eth/asix.c index 8fb7fc8..bfa76d3 100644 --- a/drivers/usb/eth/asix.c +++ b/drivers/usb/eth/asix.c @@ -31,10 +31,12 @@ #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_EEPROM 0x0b #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_WRITE_NODE_ID 0x14 #define AX_CMD_READ_PHY_ID 0x19 #define AX_CMD_WRITE_MEDIUM_MODE 0x1b #define AX_CMD_WRITE_GPIOS 0x1f @@ -97,6 +99,10 @@ #define AX_RX_URB_SIZE 2048 #define PHY_CONNECT_TIMEOUT 5000
+/* asix_flags defines */ +#define FLAG_NONE 0 +#define FLAG_EEPROM_MAC (1U << 0) /* needs manual load of mac address */ + /* local vars */ static int curr_eth_dev; /* index for name of next device detected */
@@ -310,6 +316,35 @@ static int mii_nway_restart(struct ueth_data *dev) return r; }
+static int asix_load_mac_from_eeprom(struct ueth_data *dev) +{ + int i; + ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buf, ETH_ALEN); + ALLOC_CACHE_ALIGN_BUFFER(unsigned char, read_buf, 2); + + memset(buf, 0, ETH_ALEN); + + for (i = 0; i < (ETH_ALEN >> 1); i++) { + memset(read_buf, 0, 2); + if (asix_read_cmd(dev, AX_CMD_READ_EEPROM, + 0x04 + i, 0, 2, read_buf)) { + debug("Failed to read SROM address 04h.\n"); + return -1; + } + memcpy((buf + i*2), read_buf, 2); + } + + debug("MAC read from EEPROM: %02x:%02x:%02x:%02x:%02x:%02x\n", + buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]); + + if (asix_write_cmd(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN, buf)) { + printf("Failed to set MAC address.\n"); + return -1; + } + + return 0; +} + /* * Asix callbacks */ @@ -359,6 +394,10 @@ static int asix_init(struct eth_device *eth, bd_t *bd) rx_ctl = asix_read_rx_ctl(dev); debug("RX_CTL is 0x%04x setting to 0x0000\n", rx_ctl);
+ if (dev->asix_flags & FLAG_EEPROM_MAC) + if (asix_load_mac_from_eeprom(dev)) + goto out_err; + /* Get the MAC address */ if (asix_read_cmd(dev, AX_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf) < 0) { @@ -493,13 +532,13 @@ static int asix_recv(struct eth_device *eth) } memcpy(&packet_len, buf_ptr, sizeof(packet_len)); le32_to_cpus(&packet_len); - if (((packet_len >> 16) ^ 0xffff) != (packet_len & 0xffff)) { + if (((~packet_len >> 16) & 0x7ff) != (packet_len & 0x7ff)) { debug("Rx: malformed packet length: %#x (%#x:%#x)\n", - packet_len, (packet_len >> 16) ^ 0xffff, - packet_len & 0xffff); + packet_len, (~packet_len >> 16) & 0x7ff, + packet_len & 0x7ff); return -1; } - packet_len = packet_len & 0xffff; + packet_len = packet_len & 0x7ff; if (packet_len > actual_len - sizeof(packet_len)) { debug("Rx: too large packet: %d\n", packet_len); return -1; @@ -534,19 +573,21 @@ void asix_eth_before_probe(void) struct asix_dongle { unsigned short vendor; unsigned short product; + int flags; };
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 */ + { 0x05ac, 0x1402, FLAG_NONE }, /* Apple USB Ethernet Adapter */ + { 0x07d1, 0x3c05, FLAG_NONE }, /* D-Link DUB-E100 H/W Ver B1 */ + { 0x0b95, 0x772a, FLAG_NONE }, /* Cables-to-Go USB Ethernet Adapter */ + { 0x0b95, 0x7720, FLAG_NONE }, /* Trendnet TU2-ET100 V3.0R */ + { 0x0b95, 0x1720, FLAG_NONE }, /* SMC */ + { 0x0db0, 0xa877, FLAG_NONE }, /* MSI - ASIX 88772a */ + { 0x13b1, 0x0018, FLAG_NONE }, /* Linksys 200M v2.1 */ + { 0x1557, 0x7720, FLAG_NONE }, /* 0Q0 cable ethernet */ + { 0x2001, 0x3c05, FLAG_NONE }, /* DLink DUB-E100 H/W Ver B1 Alternate */ + { 0x0b95, 0x772b, FLAG_EEPROM_MAC }, /* ASIX 88772B */ + { 0x0000, 0x0000, FLAG_NONE } /* END - Do not remove */ };
/* Probe to see if a new device is actually an asix device */ @@ -555,6 +596,7 @@ int asix_eth_probe(struct usb_device *dev, unsigned int ifnum, { struct usb_interface *iface; struct usb_interface_descriptor *iface_desc; + int ep_in_found = 0, ep_out_found = 0; int i;
/* let's examine the device now */ @@ -582,6 +624,7 @@ int asix_eth_probe(struct usb_device *dev, unsigned int ifnum, ss->pusb_dev = dev; ss->subclass = iface_desc->bInterfaceSubClass; ss->protocol = iface_desc->bInterfaceProtocol; + ss->asix_flags = asix_dongles[i].flags;
/* * We are expecting a minimum of 3 endpoints - in, out (bulk), and @@ -591,13 +634,19 @@ int asix_eth_probe(struct usb_device *dev, unsigned int ifnum, /* 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; + if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN) { + if (!ep_in_found) { + ss->ep_in = iface->ep_desc[i].bEndpointAddress & + USB_ENDPOINT_NUMBER_MASK; + ep_in_found = 1; + } + } else { + if (!ep_out_found) { + ss->ep_out = iface->ep_desc[i].bEndpointAddress & + USB_ENDPOINT_NUMBER_MASK; + ep_out_found = 1; + } + } }
/* is it an interrupt endpoint? */ diff --git a/include/usb_ether.h b/include/usb_ether.h index a7fb26b..a63fa74 100644 --- a/include/usb_ether.h +++ b/include/usb_ether.h @@ -56,6 +56,9 @@ struct ueth_data { u32 mac_cr; /* MAC control register value */ int have_hwaddr; /* 1 if we have a hardware MAC address */ #endif +#ifdef CONFIG_USB_ETHER_ASIX + int asix_flags; +#endif };
/*
Dear Lucas Stach,
There are multiple changes needed to make AX88772B work:
add vendor and product ID (trivial)
We need to read out the MAC address from the EEPROM and write
it into the NodeID register manually.
- The packet length check has to be adjusted, as all ASIX chips
only use 11 bits to indicate the length. AX88772B uses the other bits to indicate unrelated things, which cause the check to fail. This fix is based on a fix for the Linux kernel by Marek Vasut. Linux upstream commit: bca0beb9363f8487ac902931a50eb00180a2d14a
- AX88772B provides several bulk endpoints. Only the first
IN/OUT endpoints work in the default configuration. So stop enumeration after we found them to avoid overwriting the endpoint config with a non-working one.
This was tested to work on a Colibri T20 board. Patch is based on u-boot-net/next.
v2:
- split out eeprom mac load into separate function
- add flags to driver to get a clean way to enable workarounds or special functions
[...]
Quick review looks fine to me, Joe?
Best regards, Marek Vasut
On Monday 20 August 2012 13:52:18 Lucas Stach wrote:
- memset(buf, 0, ETH_ALEN);
this memset is pointless
- for (i = 0; i < (ETH_ALEN >> 1); i++) {
memset(read_buf, 0, 2);
this memset is pointless
memcpy((buf + i*2), read_buf, 2);
use spaces: "i * 2"
- debug("MAC read from EEPROM: %02x:%02x:%02x:%02x:%02x:%02x\n",
buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]);
use %pM instead of spelling out each byte yourself
- if (asix_write_cmd(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN, buf)) {
printf("Failed to set MAC address.\n");return -1;- }
- return 0;
+}
ret = asix_write_cmd(...) if (ret) puts(...); return ret;
static struct asix_dongle asix_dongles[] = {
this probably should be const
--- a/include/usb_ether.h +++ b/include/usb_ether.h
+#ifdef CONFIG_USB_ETHER_ASIX
- int asix_flags;
+#endif };
looks like the usb ether stack is fundamentally flawed if drivers are allowed to screw with the structure. this is what "void *priv" fields are for. -mike
Hi Lucas,
On Mon, Aug 20, 2012 at 12:52 PM, Lucas Stach dev@lynxeye.de wrote:
There are multiple changes needed to make AX88772B work:
add vendor and product ID (trivial)
We need to read out the MAC address from the EEPROM and write
it into the NodeID register manually.
- The packet length check has to be adjusted, as all ASIX chips
only use 11 bits to indicate the length. AX88772B uses the other bits to indicate unrelated things, which cause the check to fail. This fix is based on a fix for the Linux kernel by Marek Vasut. Linux upstream commit: bca0beb9363f8487ac902931a50eb00180a2d14a
- AX88772B provides several bulk endpoints. Only the first
IN/OUT endpoints work in the default configuration. So stop enumeration after we found them to avoid overwriting the endpoint config with a non-working one.
This was tested to work on a Colibri T20 board. Patch is based on u-boot-net/next.
v2:
- split out eeprom mac load into separate function
- add flags to driver to get a clean way to enable workarounds or special functions
Signed-off-by: Lucas Stach dev@lynxeye.de
drivers/usb/eth/asix.c | 91 ++++++++++++++++++++++++++++++++++++++------------ include/usb_ether.h | 3 ++ 2 Dateien geändert, 73 Zeilen hinzugefügt(+), 21 Zeilen entfernt(-)
diff --git a/drivers/usb/eth/asix.c b/drivers/usb/eth/asix.c index 8fb7fc8..bfa76d3 100644 --- a/drivers/usb/eth/asix.c +++ b/drivers/usb/eth/asix.c @@ -31,10 +31,12 @@ #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_EEPROM 0x0b #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_WRITE_NODE_ID 0x14 #define AX_CMD_READ_PHY_ID 0x19 #define AX_CMD_WRITE_MEDIUM_MODE 0x1b #define AX_CMD_WRITE_GPIOS 0x1f @@ -97,6 +99,10 @@ #define AX_RX_URB_SIZE 2048 #define PHY_CONNECT_TIMEOUT 5000
+/* asix_flags defines */ +#define FLAG_NONE 0 +#define FLAG_EEPROM_MAC (1U << 0) /* needs manual load of mac address */
/* local vars */ static int curr_eth_dev; /* index for name of next device detected */
@@ -310,6 +316,35 @@ static int mii_nway_restart(struct ueth_data *dev) return r; }
+static int asix_load_mac_from_eeprom(struct ueth_data *dev) +{
int i;ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buf, ETH_ALEN);ALLOC_CACHE_ALIGN_BUFFER(unsigned char, read_buf, 2);memset(buf, 0, ETH_ALEN);for (i = 0; i < (ETH_ALEN >> 1); i++) {memset(read_buf, 0, 2);if (asix_read_cmd(dev, AX_CMD_READ_EEPROM,0x04 + i, 0, 2, read_buf)) {debug("Failed to read SROM address 04h.\n");return -1;}memcpy((buf + i*2), read_buf, 2);}
This should be written to eth->enetaddr in asix_init(). That means that if you need to read from the EEPROM, then do that, otherwise do what you currently do (AX_CMD_READ_NODE_ID). Perhaps just pass in a pointer to eth->enetaddr to this function and store it there.
debug("MAC read from EEPROM: %02x:%02x:%02x:%02x:%02x:%02x\n",buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]);if (asix_write_cmd(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN, buf)) {printf("Failed to set MAC address.\n");return -1;}
This write should be a separate function and should be registered as write_hwaddr in asix_eth_get_info();
return 0;+}
/*
- Asix callbacks
*/ @@ -359,6 +394,10 @@ static int asix_init(struct eth_device *eth, bd_t *bd) rx_ctl = asix_read_rx_ctl(dev); debug("RX_CTL is 0x%04x setting to 0x0000\n", rx_ctl);
if (dev->asix_flags & FLAG_EEPROM_MAC)if (asix_load_mac_from_eeprom(dev))goto out_err;/* Get the MAC address */ if (asix_read_cmd(dev, AX_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf) < 0) {@@ -493,13 +532,13 @@ static int asix_recv(struct eth_device *eth) } memcpy(&packet_len, buf_ptr, sizeof(packet_len)); le32_to_cpus(&packet_len);
if (((packet_len >> 16) ^ 0xffff) != (packet_len & 0xffff)) {
if (((~packet_len >> 16) & 0x7ff) != (packet_len & 0x7ff)) { debug("Rx: malformed packet length: %#x (%#x:%#x)\n",
packet_len, (packet_len >> 16) ^ 0xffff,packet_len & 0xffff);
packet_len, (~packet_len >> 16) & 0x7ff,packet_len & 0x7ff); return -1; }
packet_len = packet_len & 0xffff;
packet_len = packet_len & 0x7ff; if (packet_len > actual_len - sizeof(packet_len)) { debug("Rx: too large packet: %d\n", packet_len); return -1;@@ -534,19 +573,21 @@ void asix_eth_before_probe(void) struct asix_dongle { unsigned short vendor; unsigned short product;
int flags;};
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 */
{ 0x05ac, 0x1402, FLAG_NONE }, /* Apple USB Ethernet Adapter */{ 0x07d1, 0x3c05, FLAG_NONE }, /* D-Link DUB-E100 H/W Ver B1 */{ 0x0b95, 0x772a, FLAG_NONE }, /* Cables-to-Go USB Ethernet Adapter */{ 0x0b95, 0x7720, FLAG_NONE }, /* Trendnet TU2-ET100 V3.0R */{ 0x0b95, 0x1720, FLAG_NONE }, /* SMC */{ 0x0db0, 0xa877, FLAG_NONE }, /* MSI - ASIX 88772a */{ 0x13b1, 0x0018, FLAG_NONE }, /* Linksys 200M v2.1 */{ 0x1557, 0x7720, FLAG_NONE }, /* 0Q0 cable ethernet */{ 0x2001, 0x3c05, FLAG_NONE }, /* DLink DUB-E100 H/W Ver B1 Alternate */{ 0x0b95, 0x772b, FLAG_EEPROM_MAC }, /* ASIX 88772B */{ 0x0000, 0x0000, FLAG_NONE } /* END - Do not remove */};
/* Probe to see if a new device is actually an asix device */ @@ -555,6 +596,7 @@ int asix_eth_probe(struct usb_device *dev, unsigned int ifnum, { struct usb_interface *iface; struct usb_interface_descriptor *iface_desc;
int ep_in_found = 0, ep_out_found = 0; int i; /* let's examine the device now */@@ -582,6 +624,7 @@ int asix_eth_probe(struct usb_device *dev, unsigned int ifnum, ss->pusb_dev = dev; ss->subclass = iface_desc->bInterfaceSubClass; ss->protocol = iface_desc->bInterfaceProtocol;
ss->asix_flags = asix_dongles[i].flags; /* * We are expecting a minimum of 3 endpoints - in, out (bulk), and@@ -591,13 +634,19 @@ int asix_eth_probe(struct usb_device *dev, unsigned int ifnum, /* 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;elsess->ep_out =iface->ep_desc[i].bEndpointAddress &USB_ENDPOINT_NUMBER_MASK;
if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN) {if (!ep_in_found) {ss->ep_in = iface->ep_desc[i].bEndpointAddress &USB_ENDPOINT_NUMBER_MASK;ep_in_found = 1;}} else {if (!ep_out_found) {ss->ep_out = iface->ep_desc[i].bEndpointAddress &USB_ENDPOINT_NUMBER_MASK;ep_out_found = 1;}} } /* is it an interrupt endpoint? */diff --git a/include/usb_ether.h b/include/usb_ether.h index a7fb26b..a63fa74 100644 --- a/include/usb_ether.h +++ b/include/usb_ether.h @@ -56,6 +56,9 @@ struct ueth_data { u32 mac_cr; /* MAC control register value */ int have_hwaddr; /* 1 if we have a hardware MAC address */ #endif +#ifdef CONFIG_USB_ETHER_ASIX
int asix_flags;+#endif };
/*
1.7.11.4
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participants (4)
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Joe Hershberger -
Lucas Stach -
Marek Vasut -
Mike Frysinger