M7350/kernel/drivers/net/wireless/ath/ath6kl/usb.c
2024-09-09 08:52:07 +00:00

433 lines
10 KiB
C

/*
* Copyright (c) 2007-2011 Atheros Communications Inc.
* Copyright (c) 2011-2012 Qualcomm Atheros, Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/module.h>
#include <linux/usb.h>
#include "debug.h"
#include "core.h"
/* usb device object */
struct ath6kl_usb {
struct usb_device *udev;
struct usb_interface *interface;
u8 *diag_cmd_buffer;
u8 *diag_resp_buffer;
struct ath6kl *ar;
};
/* diagnostic command defnitions */
#define ATH6KL_USB_CONTROL_REQ_SEND_BMI_CMD 1
#define ATH6KL_USB_CONTROL_REQ_RECV_BMI_RESP 2
#define ATH6KL_USB_CONTROL_REQ_DIAG_CMD 3
#define ATH6KL_USB_CONTROL_REQ_DIAG_RESP 4
#define ATH6KL_USB_CTRL_DIAG_CC_READ 0
#define ATH6KL_USB_CTRL_DIAG_CC_WRITE 1
struct ath6kl_usb_ctrl_diag_cmd_write {
__le32 cmd;
__le32 address;
__le32 value;
__le32 _pad[1];
} __packed;
struct ath6kl_usb_ctrl_diag_cmd_read {
__le32 cmd;
__le32 address;
} __packed;
struct ath6kl_usb_ctrl_diag_resp_read {
__le32 value;
} __packed;
#define ATH6KL_USB_MAX_DIAG_CMD (sizeof(struct ath6kl_usb_ctrl_diag_cmd_write))
#define ATH6KL_USB_MAX_DIAG_RESP (sizeof(struct ath6kl_usb_ctrl_diag_resp_read))
static void ath6kl_usb_destroy(struct ath6kl_usb *ar_usb)
{
usb_set_intfdata(ar_usb->interface, NULL);
kfree(ar_usb->diag_cmd_buffer);
kfree(ar_usb->diag_resp_buffer);
kfree(ar_usb);
}
static struct ath6kl_usb *ath6kl_usb_create(struct usb_interface *interface)
{
struct ath6kl_usb *ar_usb = NULL;
struct usb_device *dev = interface_to_usbdev(interface);
int status = 0;
ar_usb = kzalloc(sizeof(struct ath6kl_usb), GFP_KERNEL);
if (ar_usb == NULL)
goto fail_ath6kl_usb_create;
memset(ar_usb, 0, sizeof(struct ath6kl_usb));
usb_set_intfdata(interface, ar_usb);
ar_usb->udev = dev;
ar_usb->interface = interface;
ar_usb->diag_cmd_buffer = kzalloc(ATH6KL_USB_MAX_DIAG_CMD, GFP_KERNEL);
if (ar_usb->diag_cmd_buffer == NULL) {
status = -ENOMEM;
goto fail_ath6kl_usb_create;
}
ar_usb->diag_resp_buffer = kzalloc(ATH6KL_USB_MAX_DIAG_RESP,
GFP_KERNEL);
if (ar_usb->diag_resp_buffer == NULL) {
status = -ENOMEM;
goto fail_ath6kl_usb_create;
}
fail_ath6kl_usb_create:
if (status != 0) {
ath6kl_usb_destroy(ar_usb);
ar_usb = NULL;
}
return ar_usb;
}
static void ath6kl_usb_device_detached(struct usb_interface *interface)
{
struct ath6kl_usb *ar_usb;
ar_usb = usb_get_intfdata(interface);
if (ar_usb == NULL)
return;
ath6kl_stop_txrx(ar_usb->ar);
ath6kl_core_cleanup(ar_usb->ar);
ath6kl_usb_destroy(ar_usb);
}
static int ath6kl_usb_submit_ctrl_out(struct ath6kl_usb *ar_usb,
u8 req, u16 value, u16 index, void *data,
u32 size)
{
u8 *buf = NULL;
int ret;
if (size > 0) {
buf = kmalloc(size, GFP_KERNEL);
if (buf == NULL)
return -ENOMEM;
memcpy(buf, data, size);
}
/* note: if successful returns number of bytes transfered */
ret = usb_control_msg(ar_usb->udev,
usb_sndctrlpipe(ar_usb->udev, 0),
req,
USB_DIR_OUT | USB_TYPE_VENDOR |
USB_RECIP_DEVICE, value, index, buf,
size, 1000);
if (ret < 0) {
ath6kl_dbg(ATH6KL_DBG_USB, "%s failed,result = %d\n",
__func__, ret);
}
kfree(buf);
return 0;
}
static int ath6kl_usb_submit_ctrl_in(struct ath6kl_usb *ar_usb,
u8 req, u16 value, u16 index, void *data,
u32 size)
{
u8 *buf = NULL;
int ret;
if (size > 0) {
buf = kmalloc(size, GFP_KERNEL);
if (buf == NULL)
return -ENOMEM;
}
/* note: if successful returns number of bytes transfered */
ret = usb_control_msg(ar_usb->udev,
usb_rcvctrlpipe(ar_usb->udev, 0),
req,
USB_DIR_IN | USB_TYPE_VENDOR |
USB_RECIP_DEVICE, value, index, buf,
size, 2 * HZ);
if (ret < 0) {
ath6kl_dbg(ATH6KL_DBG_USB, "%s failed,result = %d\n",
__func__, ret);
}
memcpy((u8 *) data, buf, size);
kfree(buf);
return 0;
}
static int ath6kl_usb_ctrl_msg_exchange(struct ath6kl_usb *ar_usb,
u8 req_val, u8 *req_buf, u32 req_len,
u8 resp_val, u8 *resp_buf, u32 *resp_len)
{
int ret;
/* send command */
ret = ath6kl_usb_submit_ctrl_out(ar_usb, req_val, 0, 0,
req_buf, req_len);
if (ret != 0)
return ret;
if (resp_buf == NULL) {
/* no expected response */
return ret;
}
/* get response */
ret = ath6kl_usb_submit_ctrl_in(ar_usb, resp_val, 0, 0,
resp_buf, *resp_len);
return ret;
}
static int ath6kl_usb_diag_read32(struct ath6kl *ar, u32 address, u32 *data)
{
struct ath6kl_usb *ar_usb = ar->hif_priv;
struct ath6kl_usb_ctrl_diag_resp_read *resp;
struct ath6kl_usb_ctrl_diag_cmd_read *cmd;
u32 resp_len;
int ret;
cmd = (struct ath6kl_usb_ctrl_diag_cmd_read *) ar_usb->diag_cmd_buffer;
memset(cmd, 0, sizeof(*cmd));
cmd->cmd = ATH6KL_USB_CTRL_DIAG_CC_READ;
cmd->address = cpu_to_le32(address);
resp_len = sizeof(*resp);
ret = ath6kl_usb_ctrl_msg_exchange(ar_usb,
ATH6KL_USB_CONTROL_REQ_DIAG_CMD,
(u8 *) cmd,
sizeof(struct ath6kl_usb_ctrl_diag_cmd_write),
ATH6KL_USB_CONTROL_REQ_DIAG_RESP,
ar_usb->diag_resp_buffer, &resp_len);
if (ret)
return ret;
resp = (struct ath6kl_usb_ctrl_diag_resp_read *)
ar_usb->diag_resp_buffer;
*data = le32_to_cpu(resp->value);
return ret;
}
static int ath6kl_usb_diag_write32(struct ath6kl *ar, u32 address, __le32 data)
{
struct ath6kl_usb *ar_usb = ar->hif_priv;
struct ath6kl_usb_ctrl_diag_cmd_write *cmd;
cmd = (struct ath6kl_usb_ctrl_diag_cmd_write *) ar_usb->diag_cmd_buffer;
memset(cmd, 0, sizeof(struct ath6kl_usb_ctrl_diag_cmd_write));
cmd->cmd = cpu_to_le32(ATH6KL_USB_CTRL_DIAG_CC_WRITE);
cmd->address = cpu_to_le32(address);
cmd->value = data;
return ath6kl_usb_ctrl_msg_exchange(ar_usb,
ATH6KL_USB_CONTROL_REQ_DIAG_CMD,
(u8 *) cmd,
sizeof(*cmd),
0, NULL, NULL);
}
static int ath6kl_usb_bmi_read(struct ath6kl *ar, u8 *buf, u32 len)
{
struct ath6kl_usb *ar_usb = ar->hif_priv;
int ret;
/* get response */
ret = ath6kl_usb_submit_ctrl_in(ar_usb,
ATH6KL_USB_CONTROL_REQ_RECV_BMI_RESP,
0, 0, buf, len);
if (ret != 0) {
ath6kl_err("Unable to read the bmi data from the device: %d\n",
ret);
return ret;
}
return 0;
}
static int ath6kl_usb_bmi_write(struct ath6kl *ar, u8 *buf, u32 len)
{
struct ath6kl_usb *ar_usb = ar->hif_priv;
int ret;
/* send command */
ret = ath6kl_usb_submit_ctrl_out(ar_usb,
ATH6KL_USB_CONTROL_REQ_SEND_BMI_CMD,
0, 0, buf, len);
if (ret != 0) {
ath6kl_err("unable to send the bmi data to the device: %d\n",
ret);
return ret;
}
return 0;
}
static int ath6kl_usb_power_on(struct ath6kl *ar)
{
return 0;
}
static int ath6kl_usb_power_off(struct ath6kl *ar)
{
return 0;
}
static const struct ath6kl_hif_ops ath6kl_usb_ops = {
.diag_read32 = ath6kl_usb_diag_read32,
.diag_write32 = ath6kl_usb_diag_write32,
.bmi_read = ath6kl_usb_bmi_read,
.bmi_write = ath6kl_usb_bmi_write,
.power_on = ath6kl_usb_power_on,
.power_off = ath6kl_usb_power_off,
};
/* ath6kl usb driver registered functions */
static int ath6kl_usb_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
struct usb_device *dev = interface_to_usbdev(interface);
struct ath6kl *ar;
struct ath6kl_usb *ar_usb = NULL;
int vendor_id, product_id;
int ret = 0;
usb_get_dev(dev);
vendor_id = le16_to_cpu(dev->descriptor.idVendor);
product_id = le16_to_cpu(dev->descriptor.idProduct);
ath6kl_dbg(ATH6KL_DBG_USB, "vendor_id = %04x\n", vendor_id);
ath6kl_dbg(ATH6KL_DBG_USB, "product_id = %04x\n", product_id);
if (interface->cur_altsetting)
ath6kl_dbg(ATH6KL_DBG_USB, "USB Interface %d\n",
interface->cur_altsetting->desc.bInterfaceNumber);
if (dev->speed == USB_SPEED_HIGH)
ath6kl_dbg(ATH6KL_DBG_USB, "USB 2.0 Host\n");
else
ath6kl_dbg(ATH6KL_DBG_USB, "USB 1.1 Host\n");
ar_usb = ath6kl_usb_create(interface);
if (ar_usb == NULL) {
ret = -ENOMEM;
goto err_usb_put;
}
ar = ath6kl_core_create(&ar_usb->udev->dev);
if (ar == NULL) {
ath6kl_err("Failed to alloc ath6kl core\n");
ret = -ENOMEM;
goto err_usb_destroy;
}
ar->hif_priv = ar_usb;
ar->hif_type = ATH6KL_HIF_TYPE_USB;
ar->hif_ops = &ath6kl_usb_ops;
ar->mbox_info.block_size = 16;
ar->bmi.max_data_size = 252;
ar_usb->ar = ar;
ret = ath6kl_core_init(ar);
if (ret) {
ath6kl_err("Failed to init ath6kl core: %d\n", ret);
goto err_core_free;
}
return ret;
err_core_free:
ath6kl_core_destroy(ar);
err_usb_destroy:
ath6kl_usb_destroy(ar_usb);
err_usb_put:
usb_put_dev(dev);
return ret;
}
static void ath6kl_usb_remove(struct usb_interface *interface)
{
usb_put_dev(interface_to_usbdev(interface));
ath6kl_usb_device_detached(interface);
}
/* table of devices that work with this driver */
static struct usb_device_id ath6kl_usb_ids[] = {
{USB_DEVICE(0x0cf3, 0x9374)},
{ /* Terminating entry */ },
};
MODULE_DEVICE_TABLE(usb, ath6kl_usb_ids);
static struct usb_driver ath6kl_usb_driver = {
.name = "ath6kl_usb",
.probe = ath6kl_usb_probe,
.disconnect = ath6kl_usb_remove,
.id_table = ath6kl_usb_ids,
};
static int ath6kl_usb_init(void)
{
usb_register(&ath6kl_usb_driver);
return 0;
}
static void ath6kl_usb_exit(void)
{
usb_deregister(&ath6kl_usb_driver);
}
module_init(ath6kl_usb_init);
module_exit(ath6kl_usb_exit);
MODULE_AUTHOR("Atheros Communications, Inc.");
MODULE_DESCRIPTION("Driver support for Atheros AR600x USB devices");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_FIRMWARE(AR6004_HW_1_0_FIRMWARE_FILE);
MODULE_FIRMWARE(AR6004_HW_1_0_BOARD_DATA_FILE);
MODULE_FIRMWARE(AR6004_HW_1_0_DEFAULT_BOARD_DATA_FILE);
MODULE_FIRMWARE(AR6004_HW_1_1_FIRMWARE_FILE);
MODULE_FIRMWARE(AR6004_HW_1_1_BOARD_DATA_FILE);
MODULE_FIRMWARE(AR6004_HW_1_1_DEFAULT_BOARD_DATA_FILE);