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path: root/drivers/net/wireless/ath/ath6kl/usb.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath6kl/usb.c')
-rw-r--r--drivers/net/wireless/ath/ath6kl/usb.c432
1 files changed, 432 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath6kl/usb.c b/drivers/net/wireless/ath/ath6kl/usb.c
new file mode 100644
index 0000000..325b122
--- /dev/null
+++ b/drivers/net/wireless/ath/ath6kl/usb.c
@@ -0,0 +1,432 @@
+/*
+ * 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);
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