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android_kernel_motorola_sm6225/drivers/usb/atm/cxacru.c
Alan Stern b375a0495f [PATCH] USB: URB_ASYNC_UNLINK flag removed from the kernel 
29 July 2005, Cambridge, MA:

This afternoon Alan Stern submitted a patch to remove the URB_ASYNC_UNLINK
flag from the Linux kernel.  Mr. Stern explained, "This flag is a relic
from an earlier, less-well-designed system.  For over a year it hasn't
been used for anything other than printing warning messages."

An anonymous spokesman for the Linux kernel development community
commented, "This is exactly the sort of thing we see happening all the
time.  As the kernel evolves, support for old techniques and old code can
be jettisoned and replaced by newer, better approaches.  Proprietary
operating systems do not have the freedom or flexibility to change so
quickly."

Mr. Stern, a staff member at Harvard University's Rowland Institute who
works on Linux only as a hobby, noted that the patch (labelled as548) did
not update two files, keyspan.c and option.c, in the USB drivers' "serial"
subdirectory.  "Those files need more extensive changes," he remarked.
"They examine the status field of several URBs at times when they're not
supposed to.  That will need to be fixed before the URB_ASYNC_UNLINK flag
is removed."

Greg Kroah-Hartman, the kernel maintainer responsible for overseeing all
of Linux's USB drivers, did not respond to our inquiries or return our
calls.  His only comment was "Applied, thanks."

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-08 16:23:04 -07:00

876 lines
23 KiB
C
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/******************************************************************************
* cxacru.c - driver for USB ADSL modems based on
* Conexant AccessRunner chipset
*
* Copyright (C) 2004 David Woodhouse, Duncan Sands, Roman Kagan
* Copyright (C) 2005 Duncan Sands, Roman Kagan (rkagan % mail ! ru)
*
* 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.
*
******************************************************************************/
/*
* Credit is due for Josep Comas, who created the original patch to speedtch.c
* to support the different padding used by the AccessRunner (now generalized
* into usbatm), and the userspace firmware loading utility.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/timer.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/device.h> /* FIXME: linux/firmware.h should include it itself */
#include <linux/firmware.h>
#include "usbatm.h"
#define DRIVER_AUTHOR "Roman Kagan, David Woodhouse, Duncan Sands"
#define DRIVER_VERSION "0.2"
#define DRIVER_DESC "Conexant AccessRunner ADSL USB modem driver"
static const char cxacru_driver_name[] = "cxacru";
#define CXACRU_EP_CMD 0x01 /* Bulk/interrupt in/out */
#define CXACRU_EP_DATA 0x02 /* Bulk in/out */
#define CMD_PACKET_SIZE 64 /* Should be maxpacket(ep)? */
/* Addresses */
#define PLLFCLK_ADDR 0x00350068
#define PLLBCLK_ADDR 0x0035006c
#define SDRAMEN_ADDR 0x00350010
#define FW_ADDR 0x00801000
#define BR_ADDR 0x00180600
#define SIG_ADDR 0x00180500
#define BR_STACK_ADDR 0x00187f10
/* Values */
#define SDRAM_ENA 0x1
#define CMD_TIMEOUT 2000 /* msecs */
#define POLL_INTERVAL 5000 /* msecs */
/* commands for interaction with the modem through the control channel before
* firmware is loaded */
enum cxacru_fw_request {
FW_CMD_ERR,
FW_GET_VER,
FW_READ_MEM,
FW_WRITE_MEM,
FW_RMW_MEM,
FW_CHECKSUM_MEM,
FW_GOTO_MEM,
};
/* commands for interaction with the modem through the control channel once
* firmware is loaded */
enum cxacru_cm_request {
CM_REQUEST_UNDEFINED = 0x80,
CM_REQUEST_TEST,
CM_REQUEST_CHIP_GET_MAC_ADDRESS,
CM_REQUEST_CHIP_GET_DP_VERSIONS,
CM_REQUEST_CHIP_ADSL_LINE_START,
CM_REQUEST_CHIP_ADSL_LINE_STOP,
CM_REQUEST_CHIP_ADSL_LINE_GET_STATUS,
CM_REQUEST_CHIP_ADSL_LINE_GET_SPEED,
CM_REQUEST_CARD_INFO_GET,
CM_REQUEST_CARD_DATA_GET,
CM_REQUEST_CARD_DATA_SET,
CM_REQUEST_COMMAND_HW_IO,
CM_REQUEST_INTERFACE_HW_IO,
CM_REQUEST_CARD_SERIAL_DATA_PATH_GET,
CM_REQUEST_CARD_SERIAL_DATA_PATH_SET,
CM_REQUEST_CARD_CONTROLLER_VERSION_GET,
CM_REQUEST_CARD_GET_STATUS,
CM_REQUEST_CARD_GET_MAC_ADDRESS,
CM_REQUEST_CARD_GET_DATA_LINK_STATUS,
CM_REQUEST_MAX,
};
/* reply codes to the commands above */
enum cxacru_cm_status {
CM_STATUS_UNDEFINED,
CM_STATUS_SUCCESS,
CM_STATUS_ERROR,
CM_STATUS_UNSUPPORTED,
CM_STATUS_UNIMPLEMENTED,
CM_STATUS_PARAMETER_ERROR,
CM_STATUS_DBG_LOOPBACK,
CM_STATUS_MAX,
};
/* indices into CARD_INFO_GET return array */
enum cxacru_info_idx {
CXINF_DOWNSTREAM_RATE,
CXINF_UPSTREAM_RATE,
CXINF_LINK_STATUS,
CXINF_LINE_STATUS,
CXINF_MAC_ADDRESS_HIGH,
CXINF_MAC_ADDRESS_LOW,
CXINF_UPSTREAM_SNR_MARGIN,
CXINF_DOWNSTREAM_SNR_MARGIN,
CXINF_UPSTREAM_ATTENUATION,
CXINF_DOWNSTREAM_ATTENUATION,
CXINF_TRANSMITTER_POWER,
CXINF_UPSTREAM_BITS_PER_FRAME,
CXINF_DOWNSTREAM_BITS_PER_FRAME,
CXINF_STARTUP_ATTEMPTS,
CXINF_UPSTREAM_CRC_ERRORS,
CXINF_DOWNSTREAM_CRC_ERRORS,
CXINF_UPSTREAM_FEC_ERRORS,
CXINF_DOWNSTREAM_FEC_ERRORS,
CXINF_UPSTREAM_HEC_ERRORS,
CXINF_DOWNSTREAM_HEC_ERRORS,
CXINF_LINE_STARTABLE,
CXINF_MODULATION,
CXINF_ADSL_HEADEND,
CXINF_ADSL_HEADEND_ENVIRONMENT,
CXINF_CONTROLLER_VERSION,
/* dunno what the missing two mean */
CXINF_MAX = 0x1c,
};
struct cxacru_modem_type {
u32 pll_f_clk;
u32 pll_b_clk;
int boot_rom_patch;
};
struct cxacru_data {
struct usbatm_data *usbatm;
const struct cxacru_modem_type *modem_type;
int line_status;
struct work_struct poll_work;
/* contol handles */
struct semaphore cm_serialize;
u8 *rcv_buf;
u8 *snd_buf;
struct urb *rcv_urb;
struct urb *snd_urb;
struct completion rcv_done;
struct completion snd_done;
};
/* the following three functions are stolen from drivers/usb/core/message.c */
static void cxacru_blocking_completion(struct urb *urb, struct pt_regs *regs)
{
complete((struct completion *)urb->context);
}
static void cxacru_timeout_kill(unsigned long data)
{
usb_unlink_urb((struct urb *) data);
}
static int cxacru_start_wait_urb(struct urb *urb, struct completion *done,
int* actual_length)
{
struct timer_list timer;
int status;
init_timer(&timer);
timer.expires = jiffies + msecs_to_jiffies(CMD_TIMEOUT);
timer.data = (unsigned long) urb;
timer.function = cxacru_timeout_kill;
add_timer(&timer);
wait_for_completion(done);
status = urb->status;
if (status == -ECONNRESET)
status = -ETIMEDOUT;
del_timer_sync(&timer);
if (actual_length)
*actual_length = urb->actual_length;
return status;
}
static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm,
u8 *wdata, int wsize, u8 *rdata, int rsize)
{
int ret, actlen;
int offb, offd;
const int stride = CMD_PACKET_SIZE - 4;
u8 *wbuf = instance->snd_buf;
u8 *rbuf = instance->rcv_buf;
int wbuflen = ((wsize - 1) / stride + 1) * CMD_PACKET_SIZE;
int rbuflen = ((rsize - 1) / stride + 1) * CMD_PACKET_SIZE;
if (wbuflen > PAGE_SIZE || rbuflen > PAGE_SIZE) {
dbg("too big transfer requested");
ret = -ENOMEM;
goto fail;
}
down(&instance->cm_serialize);
/* submit reading urb before the writing one */
init_completion(&instance->rcv_done);
ret = usb_submit_urb(instance->rcv_urb, GFP_KERNEL);
if (ret < 0) {
dbg("submitting read urb for cm %#x failed", cm);
ret = ret;
goto fail;
}
memset(wbuf, 0, wbuflen);
/* handle wsize == 0 */
wbuf[0] = cm;
for (offb = offd = 0; offd < wsize; offd += stride, offb += CMD_PACKET_SIZE) {
wbuf[offb] = cm;
memcpy(wbuf + offb + 4, wdata + offd, min_t(int, stride, wsize - offd));
}
instance->snd_urb->transfer_buffer_length = wbuflen;
init_completion(&instance->snd_done);
ret = usb_submit_urb(instance->snd_urb, GFP_KERNEL);
if (ret < 0) {
dbg("submitting write urb for cm %#x failed", cm);
ret = ret;
goto fail;
}
ret = cxacru_start_wait_urb(instance->snd_urb, &instance->snd_done, NULL);
if (ret < 0) {
dbg("sending cm %#x failed", cm);
ret = ret;
goto fail;
}
ret = cxacru_start_wait_urb(instance->rcv_urb, &instance->rcv_done, &actlen);
if (ret < 0) {
dbg("receiving cm %#x failed", cm);
ret = ret;
goto fail;
}
if (actlen % CMD_PACKET_SIZE || !actlen) {
dbg("response is not a positive multiple of %d: %#x",
CMD_PACKET_SIZE, actlen);
ret = -EIO;
goto fail;
}
/* check the return status and copy the data to the output buffer, if needed */
for (offb = offd = 0; offd < rsize && offb < actlen; offb += CMD_PACKET_SIZE) {
if (rbuf[offb] != cm) {
dbg("wrong cm %#x in response", rbuf[offb]);
ret = -EIO;
goto fail;
}
if (rbuf[offb + 1] != CM_STATUS_SUCCESS) {
dbg("response failed: %#x", rbuf[offb + 1]);
ret = -EIO;
goto fail;
}
if (offd >= rsize)
break;
memcpy(rdata + offd, rbuf + offb + 4, min_t(int, stride, rsize - offd));
offd += stride;
}
ret = offd;
dbg("cm %#x", cm);
fail:
up(&instance->cm_serialize);
return ret;
}
static int cxacru_cm_get_array(struct cxacru_data *instance, enum cxacru_cm_request cm,
u32 *data, int size)
{
int ret, len;
u32 *buf;
int offb, offd;
const int stride = CMD_PACKET_SIZE / (4 * 2) - 1;
int buflen = ((size - 1) / stride + 1 + size * 2) * 4;
buf = kmalloc(buflen, GFP_KERNEL);
if (!buf)
return -ENOMEM;
ret = cxacru_cm(instance, cm, NULL, 0, (u8 *) buf, buflen);
if (ret < 0)
goto cleanup;
/* len > 0 && len % 4 == 0 guaranteed by cxacru_cm() */
len = ret / 4;
for (offb = 0; offb < len; ) {
int l = le32_to_cpu(buf[offb++]);
if (l > stride || l > (len - offb) / 2) {
dbg("wrong data length %#x in response", l);
ret = -EIO;
goto cleanup;
}
while (l--) {
offd = le32_to_cpu(buf[offb++]);
if (offd >= size) {
dbg("wrong index %#x in response", offd);
ret = -EIO;
goto cleanup;
}
data[offd] = le32_to_cpu(buf[offb++]);
}
}
ret = 0;
cleanup:
kfree(buf);
return ret;
}
static int cxacru_card_status(struct cxacru_data *instance)
{
int ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0);
if (ret < 0) { /* firmware not loaded */
dbg("cxacru_adsl_start: CARD_GET_STATUS returned %d", ret);
return ret;
}
return 0;
}
static void cxacru_poll_status(struct cxacru_data *instance);
static int cxacru_atm_start(struct usbatm_data *usbatm_instance,
struct atm_dev *atm_dev)
{
struct cxacru_data *instance = usbatm_instance->driver_data;
struct device *dev = &usbatm_instance->usb_intf->dev;
/*
struct atm_dev *atm_dev = usbatm_instance->atm_dev;
*/
int ret;
dbg("cxacru_atm_start");
/* Read MAC address */
ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_MAC_ADDRESS, NULL, 0,
atm_dev->esi, sizeof(atm_dev->esi));
if (ret < 0) {
dev_err(dev, "cxacru_atm_start: CARD_GET_MAC_ADDRESS returned %d\n", ret);
return ret;
}
/* start ADSL */
ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0);
if (ret < 0) {
dev_err(dev, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret);
return ret;
}
/* Start status polling */
cxacru_poll_status(instance);
return 0;
}
static void cxacru_poll_status(struct cxacru_data *instance)
{
u32 buf[CXINF_MAX] = {};
struct device *dev = &instance->usbatm->usb_intf->dev;
struct atm_dev *atm_dev = instance->usbatm->atm_dev;
int ret;
ret = cxacru_cm_get_array(instance, CM_REQUEST_CARD_INFO_GET, buf, CXINF_MAX);
if (ret < 0) {
dev_warn(dev, "poll status: error %d\n", ret);
goto reschedule;
}
if (instance->line_status == buf[CXINF_LINE_STATUS])
goto reschedule;
instance->line_status = buf[CXINF_LINE_STATUS];
switch (instance->line_status) {
case 0:
atm_dev->signal = ATM_PHY_SIG_LOST;
dev_info(dev, "ADSL line: down\n");
break;
case 1:
atm_dev->signal = ATM_PHY_SIG_LOST;
dev_info(dev, "ADSL line: attemtping to activate\n");
break;
case 2:
atm_dev->signal = ATM_PHY_SIG_LOST;
dev_info(dev, "ADSL line: training\n");
break;
case 3:
atm_dev->signal = ATM_PHY_SIG_LOST;
dev_info(dev, "ADSL line: channel analysis\n");
break;
case 4:
atm_dev->signal = ATM_PHY_SIG_LOST;
dev_info(dev, "ADSL line: exchange\n");
break;
case 5:
atm_dev->link_rate = buf[CXINF_DOWNSTREAM_RATE] * 1000 / 424;
atm_dev->signal = ATM_PHY_SIG_FOUND;
dev_info(dev, "ADSL line: up (%d kb/s down | %d kb/s up)\n",
buf[CXINF_DOWNSTREAM_RATE], buf[CXINF_UPSTREAM_RATE]);
break;
case 6:
atm_dev->signal = ATM_PHY_SIG_LOST;
dev_info(dev, "ADSL line: waiting\n");
break;
case 7:
atm_dev->signal = ATM_PHY_SIG_LOST;
dev_info(dev, "ADSL line: initializing\n");
break;
default:
atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
dev_info(dev, "Unknown line state %02x\n", instance->line_status);
break;
}
reschedule:
schedule_delayed_work(&instance->poll_work, msecs_to_jiffies(POLL_INTERVAL));
}
static int cxacru_fw(struct usb_device *usb_dev, enum cxacru_fw_request fw,
u8 code1, u8 code2, u32 addr, u8 *data, int size)
{
int ret;
u8 *buf;
int offd, offb;
const int stride = CMD_PACKET_SIZE - 8;
buf = (u8 *) __get_free_page(GFP_KERNEL);
if (!buf)
return -ENOMEM;
offb = offd = 0;
do {
int l = min_t(int, stride, size - offd);
buf[offb++] = fw;
buf[offb++] = l;
buf[offb++] = code1;
buf[offb++] = code2;
*((u32 *) (buf + offb)) = cpu_to_le32(addr);
offb += 4;
addr += l;
if(l)
memcpy(buf + offb, data + offd, l);
if (l < stride)
memset(buf + offb + l, 0, stride - l);
offb += stride;
offd += stride;
if ((offb >= PAGE_SIZE) || (offd >= size)) {
ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD),
buf, offb, NULL, CMD_TIMEOUT);
if (ret < 0) {
dbg("sending fw %#x failed", fw);
goto cleanup;
}
offb = 0;
}
} while(offd < size);
dbg("sent fw %#x", fw);
ret = 0;
cleanup:
free_page((unsigned long) buf);
return ret;
}
static void cxacru_upload_firmware(struct cxacru_data *instance,
const struct firmware *fw,
const struct firmware *bp,
const struct firmware *cf)
{
int ret;
int off;
struct usb_device *usb_dev = instance->usbatm->usb_dev;
struct device *dev = &instance->usbatm->usb_intf->dev;
u16 signature[] = { usb_dev->descriptor.idVendor, usb_dev->descriptor.idProduct };
u32 val;
dbg("cxacru_upload_firmware");
/* FirmwarePllFClkValue */
val = cpu_to_le32(instance->modem_type->pll_f_clk);
ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLFCLK_ADDR, (u8 *) &val, 4);
if (ret) {
dev_err(dev, "FirmwarePllFClkValue failed: %d\n", ret);
return;
}
/* FirmwarePllBClkValue */
val = cpu_to_le32(instance->modem_type->pll_b_clk);
ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLBCLK_ADDR, (u8 *) &val, 4);
if (ret) {
dev_err(dev, "FirmwarePllBClkValue failed: %d\n", ret);
return;
}
/* Enable SDRAM */
val = cpu_to_le32(SDRAM_ENA);
ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SDRAMEN_ADDR, (u8 *) &val, 4);
if (ret) {
dev_err(dev, "Enable SDRAM failed: %d\n", ret);
return;
}
/* Firmware */
ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, FW_ADDR, fw->data, fw->size);
if (ret) {
dev_err(dev, "Firmware upload failed: %d\n", ret);
return;
}
/* Boot ROM patch */
if (instance->modem_type->boot_rom_patch) {
ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_ADDR, bp->data, bp->size);
if (ret) {
dev_err(dev, "Boot ROM patching failed: %d\n", ret);
return;
}
}
/* Signature */
ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SIG_ADDR, (u8 *) signature, 4);
if (ret) {
dev_err(dev, "Signature storing failed: %d\n", ret);
return;
}
if (instance->modem_type->boot_rom_patch) {
val = cpu_to_le32(BR_ADDR);
ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_STACK_ADDR, (u8 *) &val, 4);
}
else {
ret = cxacru_fw(usb_dev, FW_GOTO_MEM, 0x0, 0x0, FW_ADDR, NULL, 0);
}
if (ret) {
dev_err(dev, "Passing control to firmware failed: %d\n", ret);
return;
}
/* Delay to allow firmware to start up. */
msleep_interruptible(1000);
usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD));
usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD));
usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_DATA));
usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_DATA));
ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0);
if (ret < 0) {
dev_err(dev, "modem failed to initialize: %d\n", ret);
return;
}
/* Load config data (le32), doing one packet at a time */
if (cf)
for (off = 0; off < cf->size / 4; ) {
u32 buf[CMD_PACKET_SIZE / 4 - 1];
int i, len = min_t(int, cf->size / 4 - off, CMD_PACKET_SIZE / 4 / 2 - 1);
buf[0] = cpu_to_le32(len);
for (i = 0; i < len; i++, off++) {
buf[i * 2 + 1] = cpu_to_le32(off);
memcpy(buf + i * 2 + 2, cf->data + off * 4, 4);
}
ret = cxacru_cm(instance, CM_REQUEST_CARD_DATA_SET,
(u8 *) buf, len, NULL, 0);
if (ret < 0) {
dev_err(dev, "load config data failed: %d\n", ret);
return;
}
}
msleep_interruptible(4000);
}
static int cxacru_find_firmware(struct cxacru_data *instance,
char* phase, const struct firmware **fw_p)
{
struct device *dev = &instance->usbatm->usb_intf->dev;
char buf[16];
sprintf(buf, "cxacru-%s.bin", phase);
dbg("cxacru_find_firmware: looking for %s", buf);
if (request_firmware(fw_p, buf, dev)) {
dev_dbg(dev, "no stage %s firmware found\n", phase);
return -ENOENT;
}
dev_info(dev, "found firmware %s\n", buf);
return 0;
}
static int cxacru_heavy_init(struct usbatm_data *usbatm_instance,
struct usb_interface *usb_intf)
{
struct device *dev = &usbatm_instance->usb_intf->dev;
const struct firmware *fw, *bp, *cf;
struct cxacru_data *instance = usbatm_instance->driver_data;
int ret = cxacru_find_firmware(instance, "fw", &fw);
if (ret) {
dev_warn(dev, "firmware (cxacru-fw.bin) unavailable (hotplug misconfiguration?)\n");
return ret;
}
if (instance->modem_type->boot_rom_patch) {
ret = cxacru_find_firmware(instance, "bp", &bp);
if (ret) {
dev_warn(dev, "boot ROM patch (cxacru-bp.bin) unavailable (hotplug misconfiguration?)\n");
release_firmware(fw);
return ret;
}
}
if (cxacru_find_firmware(instance, "cf", &cf)) /* optional */
cf = NULL;
cxacru_upload_firmware(instance, fw, bp, cf);
if (cf)
release_firmware(cf);
if (instance->modem_type->boot_rom_patch)
release_firmware(bp);
release_firmware(fw);
ret = cxacru_card_status(instance);
if (ret)
dbg("modem initialisation failed");
else
dbg("done setting up the modem");
return ret;
}
static int cxacru_bind(struct usbatm_data *usbatm_instance,
struct usb_interface *intf, const struct usb_device_id *id,
int *need_heavy_init)
{
struct cxacru_data *instance;
struct usb_device *usb_dev = interface_to_usbdev(intf);
int ret;
/* instance init */
instance = kmalloc(sizeof(*instance), GFP_KERNEL);
if (!instance) {
dbg("cxacru_bind: no memory for instance data");
return -ENOMEM;
}
memset(instance, 0, sizeof(*instance));
instance->usbatm = usbatm_instance;
instance->modem_type = (struct cxacru_modem_type *) id->driver_info;
instance->rcv_buf = (u8 *) __get_free_page(GFP_KERNEL);
if (!instance->rcv_buf) {
dbg("cxacru_bind: no memory for rcv_buf");
ret = -ENOMEM;
goto fail;
}
instance->snd_buf = (u8 *) __get_free_page(GFP_KERNEL);
if (!instance->snd_buf) {
dbg("cxacru_bind: no memory for snd_buf");
ret = -ENOMEM;
goto fail;
}
instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!instance->rcv_urb) {
dbg("cxacru_bind: no memory for rcv_urb");
ret = -ENOMEM;
goto fail;
}
instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!instance->snd_urb) {
dbg("cxacru_bind: no memory for snd_urb");
ret = -ENOMEM;
goto fail;
}
usb_fill_int_urb(instance->rcv_urb,
usb_dev, usb_rcvintpipe(usb_dev, CXACRU_EP_CMD),
instance->rcv_buf, PAGE_SIZE,
cxacru_blocking_completion, &instance->rcv_done, 1);
usb_fill_int_urb(instance->snd_urb,
usb_dev, usb_sndintpipe(usb_dev, CXACRU_EP_CMD),
instance->snd_buf, PAGE_SIZE,
cxacru_blocking_completion, &instance->snd_done, 4);
init_MUTEX(&instance->cm_serialize);
INIT_WORK(&instance->poll_work, (void *)cxacru_poll_status, instance);
usbatm_instance->driver_data = instance;
*need_heavy_init = cxacru_card_status(instance);
return 0;
fail:
free_page((unsigned long) instance->snd_buf);
free_page((unsigned long) instance->rcv_buf);
usb_free_urb(instance->snd_urb);
usb_free_urb(instance->rcv_urb);
kfree(instance);
return ret;
}
static void cxacru_unbind(struct usbatm_data *usbatm_instance,
struct usb_interface *intf)
{
struct cxacru_data *instance = usbatm_instance->driver_data;
dbg("cxacru_unbind entered");
if (!instance) {
dbg("cxacru_unbind: NULL instance!");
return;
}
while (!cancel_delayed_work(&instance->poll_work))
flush_scheduled_work();
usb_kill_urb(instance->snd_urb);
usb_kill_urb(instance->rcv_urb);
usb_free_urb(instance->snd_urb);
usb_free_urb(instance->rcv_urb);
free_page((unsigned long) instance->snd_buf);
free_page((unsigned long) instance->rcv_buf);
kfree(instance);
usbatm_instance->driver_data = NULL;
}
static const struct cxacru_modem_type cxacru_cafe = {
.pll_f_clk = 0x02d874df,
.pll_b_clk = 0x0196a51a,
.boot_rom_patch = 1,
};
static const struct cxacru_modem_type cxacru_cb00 = {
.pll_f_clk = 0x5,
.pll_b_clk = 0x3,
.boot_rom_patch = 0,
};
static const struct usb_device_id cxacru_usb_ids[] = {
{ /* V = Conexant P = ADSL modem (Euphrates project) */
USB_DEVICE(0x0572, 0xcafe), .driver_info = (unsigned long) &cxacru_cafe
},
{ /* V = Conexant P = ADSL modem (Hasbani project) */
USB_DEVICE(0x0572, 0xcb00), .driver_info = (unsigned long) &cxacru_cb00
},
{ /* V = Conexant P = ADSL modem */
USB_DEVICE(0x0572, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00
},
{ /* V = Conexant P = ADSL modem */
USB_DEVICE(0x0572, 0xcb06), .driver_info = (unsigned long) &cxacru_cb00
},
{ /* V = Olitec P = ADSL modem version 2 */
USB_DEVICE(0x08e3, 0x0100), .driver_info = (unsigned long) &cxacru_cafe
},
{ /* V = Olitec P = ADSL modem version 3 */
USB_DEVICE(0x08e3, 0x0102), .driver_info = (unsigned long) &cxacru_cb00
},
{ /* V = Trust/Amigo Technology Co. P = AMX-CA86U */
USB_DEVICE(0x0eb0, 0x3457), .driver_info = (unsigned long) &cxacru_cafe
},
{ /* V = Zoom P = 5510 */
USB_DEVICE(0x1803, 0x5510), .driver_info = (unsigned long) &cxacru_cb00
},
{ /* V = Draytek P = Vigor 318 */
USB_DEVICE(0x0675, 0x0200), .driver_info = (unsigned long) &cxacru_cb00
},
{ /* V = Zyxel P = 630-C1 aka OMNI ADSL USB (Annex A) */
USB_DEVICE(0x0586, 0x330a), .driver_info = (unsigned long) &cxacru_cb00
},
{ /* V = Zyxel P = 630-C3 aka OMNI ADSL USB (Annex B) */
USB_DEVICE(0x0586, 0x330b), .driver_info = (unsigned long) &cxacru_cb00
},
{ /* V = Aethra P = Starmodem UM1020 */
USB_DEVICE(0x0659, 0x0020), .driver_info = (unsigned long) &cxacru_cb00
},
{ /* V = Aztech Systems P = ? AKA Pirelli AUA-010 */
USB_DEVICE(0x0509, 0x0812), .driver_info = (unsigned long) &cxacru_cb00
},
{ /* V = Netopia P = Cayman 3341(Annex A)/3351(Annex B) */
USB_DEVICE(0x100d, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00
},
{ /* V = Netopia P = Cayman 3342(Annex A)/3352(Annex B) */
USB_DEVICE(0x100d, 0x3342), .driver_info = (unsigned long) &cxacru_cb00
},
{}
};
MODULE_DEVICE_TABLE(usb, cxacru_usb_ids);
static struct usbatm_driver cxacru_driver = {
.owner = THIS_MODULE,
.driver_name = cxacru_driver_name,
.bind = cxacru_bind,
.heavy_init = cxacru_heavy_init,
.unbind = cxacru_unbind,
.atm_start = cxacru_atm_start,
.in = CXACRU_EP_DATA,
.out = CXACRU_EP_DATA,
.rx_padding = 3,
.tx_padding = 11,
};
static int cxacru_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
return usbatm_usb_probe(intf, id, &cxacru_driver);
}
static struct usb_driver cxacru_usb_driver = {
.owner = THIS_MODULE,
.name = cxacru_driver_name,
.probe = cxacru_usb_probe,
.disconnect = usbatm_usb_disconnect,
.id_table = cxacru_usb_ids
};
static int __init cxacru_init(void)
{
return usb_register(&cxacru_usb_driver);
}
static void __exit cxacru_cleanup(void)
{
usb_deregister(&cxacru_usb_driver);
}
module_init(cxacru_init);
module_exit(cxacru_cleanup);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
MODULE_VERSION(DRIVER_VERSION);
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