From: Simon Arlott <simon@xxxxxxxxxxx> The modem can be configured using CM_REQUEST_CARD_DATA_SET, although CM_REQUEST_CARD_DATA_GET does not return any data. Tested by setting the modulation (0x0a) option. There is a list of parameters in the following archive, but the meaning of many of them is not well documented: http://sourceforge.net/project/shownotes.php?release_id=301825 This source also indicates that the highest parameter set is 0x4a but this varies by model so an arbitrary limit of 0x7f has been used (the index is a 32-bit integer). Signed-off-by: Simon Arlott <simon@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx> --- Documentation/networking/cxacru.txt | 9 ++++ drivers/usb/atm/cxacru.c | 76 ++++++++++++++++++++++++++++++++++- 2 files changed, 84 insertions(+), 1 deletions(-) diff --git a/Documentation/networking/cxacru.txt b/Documentation/networking/cxacru.txt index 3532cee..f4fbf4c 100644 --- a/Documentation/networking/cxacru.txt +++ b/Documentation/networking/cxacru.txt @@ -15,6 +15,15 @@ several sysfs attribute files for retrieving device statistics: * adsl_headend_environment Information about the remote headend. +* adsl_config + Configuration writing interface. + Write parameters in hexadecimal format <index>=<value>, + separated by whitespace, e.g.: + "1=0 a=5" + Up to 7 parameters at a time will be sent and the modem will restart + the ADSL connection when any value is set. These are logged for future + reference. + * downstream_attenuation (dB) * downstream_bits_per_frame * downstream_rate (kbps) diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c index 5e3d7b9..c2163d0 100644 --- a/drivers/usb/atm/cxacru.c +++ b/drivers/usb/atm/cxacru.c @@ -52,6 +52,7 @@ static const char cxacru_driver_name[] = "cxacru"; #define CXACRU_EP_DATA 0x02 /* Bulk in/out */ #define CMD_PACKET_SIZE 64 /* Should be maxpacket(ep)? */ +#define CMD_MAX_CONFIG ((CMD_PACKET_SIZE / 4 - 1) / 2) /* Addresses */ #define PLLFCLK_ADDR 0x00350068 @@ -216,6 +217,10 @@ static DEVICE_ATTR(_name, S_IRUGO, cxacru_sysfs_show_##_name, NULL) static DEVICE_ATTR(_name, S_IWUSR | S_IRUGO, \ cxacru_sysfs_show_##_name, cxacru_sysfs_store_##_name) +#define CXACRU_SET_INIT(_name) \ +static DEVICE_ATTR(_name, S_IWUSR, \ + NULL, cxacru_sysfs_store_##_name) + #define CXACRU_ATTR_INIT(_value, _type, _name) \ static ssize_t cxacru_sysfs_show_##_name(struct device *dev, \ struct device_attribute *attr, char *buf) \ @@ -232,10 +237,12 @@ CXACRU__ATTR_INIT(_name) #define CXACRU_ATTR_CREATE(_v, _t, _name) CXACRU_DEVICE_CREATE_FILE(_name) #define CXACRU_CMD_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name) +#define CXACRU_SET_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name) #define CXACRU__ATTR_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name) #define CXACRU_ATTR_REMOVE(_v, _t, _name) CXACRU_DEVICE_REMOVE_FILE(_name) #define CXACRU_CMD_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name) +#define CXACRU_SET_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name) #define CXACRU__ATTR_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name) static ssize_t cxacru_sysfs_showattr_u32(u32 value, char *buf) @@ -438,6 +445,72 @@ static ssize_t cxacru_sysfs_store_adsl_state(struct device *dev, return ret; } +/* CM_REQUEST_CARD_DATA_GET times out, so no show attribute */ + +static ssize_t cxacru_sysfs_store_adsl_config(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct cxacru_data *instance = to_usbatm_driver_data( + to_usb_interface(dev)); + int len = strlen(buf); + int ret, pos, num; + __le32 data[CMD_PACKET_SIZE / 4]; + + if (!capable(CAP_NET_ADMIN)) + return -EACCES; + + if (instance == NULL) + return -ENODEV; + + pos = 0; + num = 0; + while (pos < len) { + int tmp; + u32 index; + u32 value; + + ret = sscanf(buf + pos, "%x=%x%n", &index, &value, &tmp); + if (ret < 2) + return -EINVAL; + if (index < 0 || index > 0x7f) + return -EINVAL; + pos += tmp; + + /* skip trailing newline */ + if (buf[pos] == '\n' && pos == len-1) + pos++; + + data[num * 2 + 1] = cpu_to_le32(index); + data[num * 2 + 2] = cpu_to_le32(value); + num++; + + /* send config values when data buffer is full + * or no more data + */ + if (pos >= len || num >= CMD_MAX_CONFIG) { + char log[CMD_MAX_CONFIG * 12 + 1]; /* %02x=%08x */ + + data[0] = cpu_to_le32(num); + ret = cxacru_cm(instance, CM_REQUEST_CARD_DATA_SET, + (u8 *) data, 4 + num * 8, NULL, 0); + if (ret < 0) { + atm_err(instance->usbatm, + "set card data returned %d\n", ret); + return -EIO; + } + + for (tmp = 0; tmp < num; tmp++) + snprintf(log + tmp*12, 13, " %02x=%08x", + le32_to_cpu(data[tmp * 2 + 1]), + le32_to_cpu(data[tmp * 2 + 2])); + atm_info(instance->usbatm, "config%s\n", log); + num = 0; + } + } + + return len; +} + /* * All device attributes are included in CXACRU_ALL_FILES * so that the same list can be used multiple times: @@ -473,7 +546,8 @@ CXACRU_ATTR_##_action(CXINF_MODULATION, MODU, modulation); \ CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND, u32, adsl_headend); \ CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND_ENVIRONMENT, u32, adsl_headend_environment); \ CXACRU_ATTR_##_action(CXINF_CONTROLLER_VERSION, u32, adsl_controller_version); \ -CXACRU_CMD_##_action( adsl_state); +CXACRU_CMD_##_action( adsl_state); \ +CXACRU_SET_##_action( adsl_config); CXACRU_ALL_FILES(INIT); -- 1.7.0.1 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
