F: Documentation/admin-guide/media/pulse8-cec.rst
F: drivers/media/cec/usb/pulse8/
+PURELIFI PLFXLC DRIVER
+M: Srinivasan Raju <srini.raju@purelifi.com>
+L: linux-wireless@vger.kernel.org
+S: Supported
+F: drivers/net/wireless/purelifi/plfxlc/
+
PVRUSB2 VIDEO4LINUX DRIVER
M: Mike Isely <isely@pobox.com>
L: pvrusb2@isely.net (subscribers-only)
source "drivers/net/wireless/marvell/Kconfig"
source "drivers/net/wireless/mediatek/Kconfig"
source "drivers/net/wireless/microchip/Kconfig"
+source "drivers/net/wireless/purelifi/Kconfig"
source "drivers/net/wireless/ralink/Kconfig"
source "drivers/net/wireless/realtek/Kconfig"
source "drivers/net/wireless/rsi/Kconfig"
obj-$(CONFIG_WLAN_VENDOR_MARVELL) += marvell/
obj-$(CONFIG_WLAN_VENDOR_MEDIATEK) += mediatek/
obj-$(CONFIG_WLAN_VENDOR_MICROCHIP) += microchip/
+obj-$(CONFIG_WLAN_VENDOR_PURELIFI) += purelifi/
obj-$(CONFIG_WLAN_VENDOR_RALINK) += ralink/
obj-$(CONFIG_WLAN_VENDOR_REALTEK) += realtek/
obj-$(CONFIG_WLAN_VENDOR_RSI) += rsi/
--- /dev/null
+# SPDX-License-Identifier: GPL-2.0-only
+config WLAN_VENDOR_PURELIFI
+ bool "pureLiFi devices"
+ default y
+ help
+ If you have a pureLiFi device, say Y.
+
+ Note that the answer to this question doesn't directly affect the
+ kernel: saying N will just cause the configurator to skip all the
+ questions about these cards. If you say Y, you will be asked for
+ your specific card in the following questions.
+
+if WLAN_VENDOR_PURELIFI
+
+source "drivers/net/wireless/purelifi/plfxlc/Kconfig"
+
+endif # WLAN_VENDOR_PURELIFI
--- /dev/null
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_PLFXLC) := plfxlc/
--- /dev/null
+# SPDX-License-Identifier: GPL-2.0-only
+config PLFXLC
+ tristate "pureLiFi X, XL, XC device support"
+ depends on CFG80211 && MAC80211 && USB
+ help
+ This option adds support for pureLiFi LiFi wireless USB
+ adapters. The pureLiFi X, XL, XC USB devices are based on
+ 802.11 OFDM PHY but uses light as the transmission medium.
+ The driver supports common 802.11 encryption/authentication
+ methods including Open, WPA, WPA2-Personal and
+ WPA2-Enterprise (802.1X).
+
+ To compile this driver as a module, choose m here. The module will
+ be called plfxlc.
--- /dev/null
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_PLFXLC) := plfxlc.o
+plfxlc-objs += chip.o firmware.o usb.o mac.o
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2021 pureLiFi
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+
+#include "chip.h"
+#include "mac.h"
+#include "usb.h"
+
+void plfxlc_chip_init(struct plfxlc_chip *chip,
+ struct ieee80211_hw *hw,
+ struct usb_interface *intf)
+{
+ memset(chip, 0, sizeof(*chip));
+ mutex_init(&chip->mutex);
+ plfxlc_usb_init(&chip->usb, hw, intf);
+}
+
+void plfxlc_chip_release(struct plfxlc_chip *chip)
+{
+ plfxlc_usb_release(&chip->usb);
+ mutex_destroy(&chip->mutex);
+}
+
+int plfxlc_set_beacon_interval(struct plfxlc_chip *chip, u16 interval,
+ u8 dtim_period, int type)
+{
+ if (!interval ||
+ (chip->beacon_set &&
+ le16_to_cpu(chip->beacon_interval) == interval))
+ return 0;
+
+ chip->beacon_interval = cpu_to_le16(interval);
+ chip->beacon_set = true;
+ return plfxlc_usb_wreq(chip->usb.ez_usb,
+ &chip->beacon_interval,
+ sizeof(chip->beacon_interval),
+ USB_REQ_BEACON_INTERVAL_WR);
+}
+
+int plfxlc_chip_init_hw(struct plfxlc_chip *chip)
+{
+ unsigned char *addr = plfxlc_mac_get_perm_addr(plfxlc_chip_to_mac(chip));
+ struct usb_device *udev = interface_to_usbdev(chip->usb.intf);
+
+ pr_info("plfxlc chip %04x:%04x v%02x %pM %s\n",
+ le16_to_cpu(udev->descriptor.idVendor),
+ le16_to_cpu(udev->descriptor.idProduct),
+ le16_to_cpu(udev->descriptor.bcdDevice),
+ addr,
+ plfxlc_speed(udev->speed));
+
+ return plfxlc_set_beacon_interval(chip, 100, 0, 0);
+}
+
+int plfxlc_chip_switch_radio(struct plfxlc_chip *chip, u16 value)
+{
+ int r;
+ __le16 radio_on = cpu_to_le16(value);
+
+ r = plfxlc_usb_wreq(chip->usb.ez_usb, &radio_on,
+ sizeof(value), USB_REQ_POWER_WR);
+ if (r)
+ dev_err(plfxlc_chip_dev(chip), "POWER_WR failed (%d)\n", r);
+ return r;
+}
+
+int plfxlc_chip_enable_rxtx(struct plfxlc_chip *chip)
+{
+ plfxlc_usb_enable_tx(&chip->usb);
+ return plfxlc_usb_enable_rx(&chip->usb);
+}
+
+void plfxlc_chip_disable_rxtx(struct plfxlc_chip *chip)
+{
+ u8 value = 0;
+
+ plfxlc_usb_wreq(chip->usb.ez_usb,
+ &value, sizeof(value), USB_REQ_RXTX_WR);
+ plfxlc_usb_disable_rx(&chip->usb);
+ plfxlc_usb_disable_tx(&chip->usb);
+}
+
+int plfxlc_chip_set_rate(struct plfxlc_chip *chip, u8 rate)
+{
+ int r;
+
+ if (!chip)
+ return -EINVAL;
+
+ r = plfxlc_usb_wreq(chip->usb.ez_usb,
+ &rate, sizeof(rate), USB_REQ_RATE_WR);
+ if (r)
+ dev_err(plfxlc_chip_dev(chip), "RATE_WR failed (%d)\n", r);
+ return r;
+}
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2021 pureLiFi
+ */
+
+#ifndef PLFXLC_CHIP_H
+#define PLFXLC_CHIP_H
+
+#include <net/mac80211.h>
+
+#include "usb.h"
+
+enum unit_type {
+ STA = 0,
+ AP = 1,
+};
+
+enum {
+ PLFXLC_RADIO_OFF = 0,
+ PLFXLC_RADIO_ON = 1,
+};
+
+struct plfxlc_chip {
+ struct plfxlc_usb usb;
+ struct mutex mutex; /* lock to protect chip data */
+ enum unit_type unit_type;
+ u16 link_led;
+ u8 beacon_set;
+ u16 beacon_interval;
+};
+
+struct plfxlc_mc_hash {
+ u32 low;
+ u32 high;
+};
+
+#define plfxlc_chip_dev(chip) (&(chip)->usb.intf->dev)
+
+void plfxlc_chip_init(struct plfxlc_chip *chip,
+ struct ieee80211_hw *hw,
+ struct usb_interface *intf);
+
+void plfxlc_chip_release(struct plfxlc_chip *chip);
+
+void plfxlc_chip_disable_rxtx(struct plfxlc_chip *chip);
+
+int plfxlc_chip_init_hw(struct plfxlc_chip *chip);
+
+int plfxlc_chip_enable_rxtx(struct plfxlc_chip *chip);
+
+int plfxlc_chip_set_rate(struct plfxlc_chip *chip, u8 rate);
+
+int plfxlc_set_beacon_interval(struct plfxlc_chip *chip, u16 interval,
+ u8 dtim_period, int type);
+
+int plfxlc_chip_switch_radio(struct plfxlc_chip *chip, u16 value);
+
+static inline struct plfxlc_chip *plfxlc_usb_to_chip(struct plfxlc_usb
+ *usb)
+{
+ return container_of(usb, struct plfxlc_chip, usb);
+}
+
+static inline void plfxlc_mc_add_all(struct plfxlc_mc_hash *hash)
+{
+ hash->low = 0xffffffff;
+ hash->high = 0xffffffff;
+}
+
+#endif /* PLFXLC_CHIP_H */
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2021 pureLiFi
+ */
+
+#include <linux/firmware.h>
+#include <linux/bitrev.h>
+
+#include "mac.h"
+#include "usb.h"
+
+static int send_vendor_request(struct usb_device *udev, int request,
+ unsigned char *buffer, int buffer_size)
+{
+ return usb_control_msg(udev,
+ usb_rcvctrlpipe(udev, 0),
+ request, 0xC0, 0, 0,
+ buffer, buffer_size, PLF_USB_TIMEOUT);
+}
+
+static int send_vendor_command(struct usb_device *udev, int request,
+ unsigned char *buffer, int buffer_size)
+{
+ return usb_control_msg(udev,
+ usb_sndctrlpipe(udev, 0),
+ request, USB_TYPE_VENDOR /*0x40*/, 0, 0,
+ buffer, buffer_size, PLF_USB_TIMEOUT);
+}
+
+int plfxlc_download_fpga(struct usb_interface *intf)
+{
+ struct usb_device *udev = interface_to_usbdev(intf);
+ unsigned char *fpga_dmabuff = NULL;
+ const struct firmware *fw = NULL;
+ int blk_tran_len = PLF_BULK_TLEN;
+ unsigned char *fw_data;
+ const char *fw_name;
+ int r, actual_length;
+ int fw_data_i = 0;
+
+ if ((le16_to_cpu(udev->descriptor.idVendor) ==
+ PURELIFI_X_VENDOR_ID_0) &&
+ (le16_to_cpu(udev->descriptor.idProduct) ==
+ PURELIFI_X_PRODUCT_ID_0)) {
+ fw_name = "plfxlc/lifi-x.bin";
+ dev_dbg(&intf->dev, "bin file for X selected\n");
+
+ } else if ((le16_to_cpu(udev->descriptor.idVendor)) ==
+ PURELIFI_XC_VENDOR_ID_0 &&
+ (le16_to_cpu(udev->descriptor.idProduct) ==
+ PURELIFI_XC_PRODUCT_ID_0)) {
+ fw_name = "plfxlc/lifi-xc.bin";
+ dev_dbg(&intf->dev, "bin file for XC selected\n");
+
+ } else {
+ r = -EINVAL;
+ goto error;
+ }
+
+ r = request_firmware(&fw, fw_name, &intf->dev);
+ if (r) {
+ dev_err(&intf->dev, "request_firmware failed (%d)\n", r);
+ goto error;
+ }
+ fpga_dmabuff = kmalloc(PLF_FPGA_STATUS_LEN, GFP_KERNEL);
+
+ if (!fpga_dmabuff) {
+ r = -ENOMEM;
+ goto error_free_fw;
+ }
+ send_vendor_request(udev, PLF_VNDR_FPGA_SET_REQ,
+ fpga_dmabuff, PLF_FPGA_STATUS_LEN);
+
+ send_vendor_command(udev, PLF_VNDR_FPGA_SET_CMD, NULL, 0);
+
+ if (fpga_dmabuff[0] != PLF_FPGA_MG) {
+ dev_err(&intf->dev, "fpga_dmabuff[0] is wrong\n");
+ r = -EINVAL;
+ goto error_free_fw;
+ }
+
+ for (fw_data_i = 0; fw_data_i < fw->size;) {
+ int tbuf_idx;
+
+ if ((fw->size - fw_data_i) < blk_tran_len)
+ blk_tran_len = fw->size - fw_data_i;
+
+ fw_data = kmemdup(&fw->data[fw_data_i], blk_tran_len,
+ GFP_KERNEL);
+ if (!fw_data) {
+ r = -ENOMEM;
+ goto error_free_fw;
+ }
+
+ for (tbuf_idx = 0; tbuf_idx < blk_tran_len; tbuf_idx++) {
+ /* u8 bit reverse */
+ fw_data[tbuf_idx] = bitrev8(fw_data[tbuf_idx]);
+ }
+ r = usb_bulk_msg(udev,
+ usb_sndbulkpipe(interface_to_usbdev(intf),
+ fpga_dmabuff[0] & 0xff),
+ fw_data,
+ blk_tran_len,
+ &actual_length,
+ 2 * PLF_USB_TIMEOUT);
+
+ if (r)
+ dev_err(&intf->dev, "Bulk msg failed (%d)\n", r);
+
+ kfree(fw_data);
+ fw_data_i += blk_tran_len;
+ }
+
+ kfree(fpga_dmabuff);
+ fpga_dmabuff = kmalloc(PLF_FPGA_STATE_LEN, GFP_KERNEL);
+ if (!fpga_dmabuff) {
+ r = -ENOMEM;
+ goto error_free_fw;
+ }
+ memset(fpga_dmabuff, 0xff, PLF_FPGA_STATE_LEN);
+
+ send_vendor_request(udev, PLF_VNDR_FPGA_STATE_REQ, fpga_dmabuff,
+ PLF_FPGA_STATE_LEN);
+
+ dev_dbg(&intf->dev, "%*ph\n", 8, fpga_dmabuff);
+
+ if (fpga_dmabuff[0] != 0) {
+ r = -EINVAL;
+ goto error_free_fw;
+ }
+
+ send_vendor_command(udev, PLF_VNDR_FPGA_STATE_CMD, NULL, 0);
+
+ msleep(PLF_MSLEEP_TIME);
+
+error_free_fw:
+ kfree(fpga_dmabuff);
+ release_firmware(fw);
+error:
+ return r;
+}
+
+int plfxlc_download_xl_firmware(struct usb_interface *intf)
+{
+ struct usb_device *udev = interface_to_usbdev(intf);
+ const struct firmware *fwp = NULL;
+ struct plfxlc_firmware_file file = {0};
+ const char *fw_pack;
+ int s, r;
+ u8 *buf;
+ u32 i;
+
+ r = send_vendor_command(udev, PLF_VNDR_XL_FW_CMD, NULL, 0);
+ msleep(PLF_MSLEEP_TIME);
+
+ if (r) {
+ dev_err(&intf->dev, "vendor command failed (%d)\n", r);
+ return -EINVAL;
+ }
+ /* Code for single pack file download */
+
+ fw_pack = "plfxlc/lifi-xl.bin";
+
+ r = request_firmware(&fwp, fw_pack, &intf->dev);
+ if (r) {
+ dev_err(&intf->dev, "Request_firmware failed (%d)\n", r);
+ return -EINVAL;
+ }
+ file.total_files = get_unaligned_le32(&fwp->data[0]);
+ file.total_size = get_unaligned_le32(&fwp->size);
+
+ dev_dbg(&intf->dev, "XL Firmware (%d, %d)\n",
+ file.total_files, file.total_size);
+
+ buf = kzalloc(PLF_XL_BUF_LEN, GFP_KERNEL);
+ if (!buf) {
+ release_firmware(fwp);
+ return -ENOMEM;
+ }
+
+ if (file.total_files > 10) {
+ dev_err(&intf->dev, "Too many files (%d)\n", file.total_files);
+ release_firmware(fwp);
+ kfree(buf);
+ return -EINVAL;
+ }
+
+ /* Download firmware files in multiple steps */
+ for (s = 0; s < file.total_files; s++) {
+ buf[0] = s;
+ r = send_vendor_command(udev, PLF_VNDR_XL_FILE_CMD, buf,
+ PLF_XL_BUF_LEN);
+
+ if (s < file.total_files - 1)
+ file.size = get_unaligned_le32(&fwp->data[4 + ((s + 1) * 4)])
+ - get_unaligned_le32(&fwp->data[4 + (s) * 4]);
+ else
+ file.size = file.total_size -
+ get_unaligned_le32(&fwp->data[4 + (s) * 4]);
+
+ if (file.size > file.total_size || file.size > 60000) {
+ dev_err(&intf->dev, "File size is too large (%d)\n", file.size);
+ break;
+ }
+
+ file.start_addr = get_unaligned_le32(&fwp->data[4 + (s * 4)]);
+
+ if (file.size % PLF_XL_BUF_LEN && s < 2)
+ file.size += PLF_XL_BUF_LEN - file.size % PLF_XL_BUF_LEN;
+
+ file.control_packets = file.size / PLF_XL_BUF_LEN;
+
+ for (i = 0; i < file.control_packets; i++) {
+ memcpy(buf,
+ &fwp->data[file.start_addr + (i * PLF_XL_BUF_LEN)],
+ PLF_XL_BUF_LEN);
+ r = send_vendor_command(udev, PLF_VNDR_XL_DATA_CMD, buf,
+ PLF_XL_BUF_LEN);
+ }
+ dev_dbg(&intf->dev, "fw-dw step=%d,r=%d size=%d\n", s, r,
+ file.size);
+ }
+ release_firmware(fwp);
+ kfree(buf);
+
+ /* Code for single pack file download ends fw download finish */
+
+ r = send_vendor_command(udev, PLF_VNDR_XL_EX_CMD, NULL, 0);
+ dev_dbg(&intf->dev, "Download fpga (4) (%d)\n", r);
+
+ return 0;
+}
+
+int plfxlc_upload_mac_and_serial(struct usb_interface *intf,
+ unsigned char *hw_address,
+ unsigned char *serial_number)
+{
+ struct usb_device *udev = interface_to_usbdev(intf);
+ unsigned long long firmware_version;
+ unsigned char *dma_buffer = NULL;
+
+ dma_buffer = kmalloc(PLF_SERIAL_LEN, GFP_KERNEL);
+ if (!dma_buffer)
+ return -ENOMEM;
+
+ BUILD_BUG_ON(ETH_ALEN > PLF_SERIAL_LEN);
+ BUILD_BUG_ON(PLF_FW_VER_LEN > PLF_SERIAL_LEN);
+
+ send_vendor_request(udev, PLF_MAC_VENDOR_REQUEST, dma_buffer,
+ ETH_ALEN);
+
+ memcpy(hw_address, dma_buffer, ETH_ALEN);
+
+ send_vendor_request(udev, PLF_SERIAL_NUMBER_VENDOR_REQUEST,
+ dma_buffer, PLF_SERIAL_LEN);
+
+ send_vendor_request(udev, PLF_SERIAL_NUMBER_VENDOR_REQUEST,
+ dma_buffer, PLF_SERIAL_LEN);
+
+ memcpy(serial_number, dma_buffer, PLF_SERIAL_LEN);
+
+ memset(dma_buffer, 0x00, PLF_SERIAL_LEN);
+
+ send_vendor_request(udev, PLF_FIRMWARE_VERSION_VENDOR_REQUEST,
+ (unsigned char *)dma_buffer, PLF_FW_VER_LEN);
+
+ memcpy(&firmware_version, dma_buffer, PLF_FW_VER_LEN);
+
+ dev_info(&intf->dev, "Firmware Version: %llu\n", firmware_version);
+ kfree(dma_buffer);
+
+ dev_dbg(&intf->dev, "Mac: %pM\n", hw_address);
+
+ return 0;
+}
+
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2021 pureLiFi
+ */
+
+#define PURELIFI_BYTE_NUM_ALIGNMENT 4
+#define ETH_ALEN 6
+#define AP_USER_LIMIT 8
+
+#define PLF_VNDR_FPGA_STATE_REQ 0x30
+#define PLF_VNDR_FPGA_SET_REQ 0x33
+#define PLF_VNDR_FPGA_SET_CMD 0x34
+#define PLF_VNDR_FPGA_STATE_CMD 0x35
+
+#define PLF_VNDR_XL_FW_CMD 0x80
+#define PLF_VNDR_XL_DATA_CMD 0x81
+#define PLF_VNDR_XL_FILE_CMD 0x82
+#define PLF_VNDR_XL_EX_CMD 0x83
+
+#define PLF_MAC_VENDOR_REQUEST 0x36
+#define PLF_SERIAL_NUMBER_VENDOR_REQUEST 0x37
+#define PLF_FIRMWARE_VERSION_VENDOR_REQUEST 0x39
+#define PLF_SERIAL_LEN 14
+#define PLF_FW_VER_LEN 8
+
+struct rx_status {
+ __be16 rssi;
+ u8 rate_idx;
+ u8 pad;
+ __be64 crc_error_count;
+} __packed;
+
+enum plf_usb_req_enum {
+ USB_REQ_TEST_WR = 0,
+ USB_REQ_MAC_WR = 1,
+ USB_REQ_POWER_WR = 2,
+ USB_REQ_RXTX_WR = 3,
+ USB_REQ_BEACON_WR = 4,
+ USB_REQ_BEACON_INTERVAL_WR = 5,
+ USB_REQ_RTS_CTS_RATE_WR = 6,
+ USB_REQ_HASH_WR = 7,
+ USB_REQ_DATA_TX = 8,
+ USB_REQ_RATE_WR = 9,
+ USB_REQ_SET_FREQ = 15
+};
+
+struct plf_usb_req {
+ __be32 id; /* should be plf_usb_req_enum */
+ __be32 len;
+ u8 buf[512];
+};
+
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2021 pureLiFi
+ */
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/slab.h>
+#include <linux/usb.h>
+#include <linux/gpio.h>
+#include <linux/jiffies.h>
+#include <net/ieee80211_radiotap.h>
+
+#include "chip.h"
+#include "mac.h"
+#include "usb.h"
+
+static const struct ieee80211_rate plfxlc_rates[] = {
+ { .bitrate = 10,
+ .hw_value = PURELIFI_CCK_RATE_1M,
+ .flags = 0 },
+ { .bitrate = 20,
+ .hw_value = PURELIFI_CCK_RATE_2M,
+ .hw_value_short = PURELIFI_CCK_RATE_2M
+ | PURELIFI_CCK_PREA_SHORT,
+ .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+ { .bitrate = 55,
+ .hw_value = PURELIFI_CCK_RATE_5_5M,
+ .hw_value_short = PURELIFI_CCK_RATE_5_5M
+ | PURELIFI_CCK_PREA_SHORT,
+ .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+ { .bitrate = 110,
+ .hw_value = PURELIFI_CCK_RATE_11M,
+ .hw_value_short = PURELIFI_CCK_RATE_11M
+ | PURELIFI_CCK_PREA_SHORT,
+ .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+ { .bitrate = 60,
+ .hw_value = PURELIFI_OFDM_RATE_6M,
+ .flags = 0 },
+ { .bitrate = 90,
+ .hw_value = PURELIFI_OFDM_RATE_9M,
+ .flags = 0 },
+ { .bitrate = 120,
+ .hw_value = PURELIFI_OFDM_RATE_12M,
+ .flags = 0 },
+ { .bitrate = 180,
+ .hw_value = PURELIFI_OFDM_RATE_18M,
+ .flags = 0 },
+ { .bitrate = 240,
+ .hw_value = PURELIFI_OFDM_RATE_24M,
+ .flags = 0 },
+ { .bitrate = 360,
+ .hw_value = PURELIFI_OFDM_RATE_36M,
+ .flags = 0 },
+ { .bitrate = 480,
+ .hw_value = PURELIFI_OFDM_RATE_48M,
+ .flags = 0 },
+ { .bitrate = 540,
+ .hw_value = PURELIFI_OFDM_RATE_54M,
+ .flags = 0 }
+};
+
+static const struct ieee80211_channel plfxlc_channels[] = {
+ { .center_freq = 2412, .hw_value = 1 },
+ { .center_freq = 2417, .hw_value = 2 },
+ { .center_freq = 2422, .hw_value = 3 },
+ { .center_freq = 2427, .hw_value = 4 },
+ { .center_freq = 2432, .hw_value = 5 },
+ { .center_freq = 2437, .hw_value = 6 },
+ { .center_freq = 2442, .hw_value = 7 },
+ { .center_freq = 2447, .hw_value = 8 },
+ { .center_freq = 2452, .hw_value = 9 },
+ { .center_freq = 2457, .hw_value = 10 },
+ { .center_freq = 2462, .hw_value = 11 },
+ { .center_freq = 2467, .hw_value = 12 },
+ { .center_freq = 2472, .hw_value = 13 },
+ { .center_freq = 2484, .hw_value = 14 },
+};
+
+int plfxlc_mac_preinit_hw(struct ieee80211_hw *hw, const u8 *hw_address)
+{
+ SET_IEEE80211_PERM_ADDR(hw, hw_address);
+ return 0;
+}
+
+int plfxlc_mac_init_hw(struct ieee80211_hw *hw)
+{
+ struct plfxlc_mac *mac = plfxlc_hw_mac(hw);
+ struct plfxlc_chip *chip = &mac->chip;
+ int r;
+
+ r = plfxlc_chip_init_hw(chip);
+ if (r) {
+ dev_warn(plfxlc_mac_dev(mac), "init hw failed (%d)\n", r);
+ return r;
+ }
+
+ dev_dbg(plfxlc_mac_dev(mac), "irq_disabled (%d)\n", irqs_disabled());
+ regulatory_hint(hw->wiphy, "00");
+ return r;
+}
+
+void plfxlc_mac_release(struct plfxlc_mac *mac)
+{
+ plfxlc_chip_release(&mac->chip);
+ lockdep_assert_held(&mac->lock);
+}
+
+int plfxlc_op_start(struct ieee80211_hw *hw)
+{
+ plfxlc_hw_mac(hw)->chip.usb.initialized = 1;
+ return 0;
+}
+
+void plfxlc_op_stop(struct ieee80211_hw *hw)
+{
+ struct plfxlc_mac *mac = plfxlc_hw_mac(hw);
+
+ clear_bit(PURELIFI_DEVICE_RUNNING, &mac->flags);
+}
+
+int plfxlc_restore_settings(struct plfxlc_mac *mac)
+{
+ int beacon_interval, beacon_period;
+ struct sk_buff *beacon;
+
+ spin_lock_irq(&mac->lock);
+ beacon_interval = mac->beacon.interval;
+ beacon_period = mac->beacon.period;
+ spin_unlock_irq(&mac->lock);
+
+ if (mac->type != NL80211_IFTYPE_ADHOC)
+ return 0;
+
+ if (mac->vif) {
+ beacon = ieee80211_beacon_get(mac->hw, mac->vif);
+ if (beacon) {
+ /*beacon is hardcoded in firmware */
+ kfree_skb(beacon);
+ /* Returned skb is used only once and lowlevel
+ * driver is responsible for freeing it.
+ */
+ }
+ }
+
+ plfxlc_set_beacon_interval(&mac->chip, beacon_interval,
+ beacon_period, mac->type);
+
+ spin_lock_irq(&mac->lock);
+ mac->beacon.last_update = jiffies;
+ spin_unlock_irq(&mac->lock);
+
+ return 0;
+}
+
+static void plfxlc_mac_tx_status(struct ieee80211_hw *hw,
+ struct sk_buff *skb,
+ int ackssi,
+ struct tx_status *tx_status)
+{
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ int success = 1;
+
+ ieee80211_tx_info_clear_status(info);
+ if (tx_status)
+ success = !tx_status->failure;
+
+ if (success)
+ info->flags |= IEEE80211_TX_STAT_ACK;
+ else
+ info->flags &= ~IEEE80211_TX_STAT_ACK;
+
+ info->status.ack_signal = 50;
+ ieee80211_tx_status_irqsafe(hw, skb);
+}
+
+void plfxlc_mac_tx_to_dev(struct sk_buff *skb, int error)
+{
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_hw *hw = info->rate_driver_data[0];
+ struct plfxlc_mac *mac = plfxlc_hw_mac(hw);
+ struct sk_buff_head *q = NULL;
+
+ ieee80211_tx_info_clear_status(info);
+ skb_pull(skb, sizeof(struct plfxlc_ctrlset));
+
+ if (unlikely(error ||
+ (info->flags & IEEE80211_TX_CTL_NO_ACK))) {
+ ieee80211_tx_status_irqsafe(hw, skb);
+ return;
+ }
+
+ q = &mac->ack_wait_queue;
+
+ skb_queue_tail(q, skb);
+ while (skb_queue_len(q)/* > PURELIFI_MAC_MAX_ACK_WAITERS*/) {
+ plfxlc_mac_tx_status(hw, skb_dequeue(q),
+ mac->ack_pending ?
+ mac->ack_signal : 0,
+ NULL);
+ mac->ack_pending = 0;
+ }
+}
+
+static int plfxlc_fill_ctrlset(struct plfxlc_mac *mac, struct sk_buff *skb)
+{
+ unsigned int frag_len = skb->len;
+ struct plfxlc_ctrlset *cs;
+ u32 temp_payload_len = 0;
+ unsigned int tmp;
+ u32 temp_len = 0;
+
+ if (skb_headroom(skb) < sizeof(struct plfxlc_ctrlset)) {
+ dev_dbg(plfxlc_mac_dev(mac), "Not enough hroom(1)\n");
+ return 1;
+ }
+
+ cs = (void *)skb_push(skb, sizeof(struct plfxlc_ctrlset));
+ temp_payload_len = frag_len;
+ temp_len = temp_payload_len +
+ sizeof(struct plfxlc_ctrlset) -
+ sizeof(cs->id) - sizeof(cs->len);
+
+ /* Data packet lengths must be multiple of four bytes and must
+ * not be a multiple of 512 bytes. First, it is attempted to
+ * append the data packet in the tailroom of the skb. In rare
+ * occasions, the tailroom is too small. In this case, the
+ * content of the packet is shifted into the headroom of the skb
+ * by memcpy. Headroom is allocated at startup (below in this
+ * file). Therefore, there will be always enough headroom. The
+ * call skb_headroom is an additional safety which might be
+ * dropped.
+ */
+ /* check if 32 bit aligned and align data */
+ tmp = skb->len & 3;
+ if (tmp) {
+ if (skb_tailroom(skb) < (3 - tmp)) {
+ if (skb_headroom(skb) >= 4 - tmp) {
+ u8 len;
+ u8 *src_pt;
+ u8 *dest_pt;
+
+ len = skb->len;
+ src_pt = skb->data;
+ dest_pt = skb_push(skb, 4 - tmp);
+ memmove(dest_pt, src_pt, len);
+ } else {
+ return -ENOBUFS;
+ }
+ } else {
+ skb_put(skb, 4 - tmp);
+ }
+ temp_len += 4 - tmp;
+ }
+
+ /* check if not multiple of 512 and align data */
+ tmp = skb->len & 0x1ff;
+ if (!tmp) {
+ if (skb_tailroom(skb) < 4) {
+ if (skb_headroom(skb) >= 4) {
+ u8 len = skb->len;
+ u8 *src_pt = skb->data;
+ u8 *dest_pt = skb_push(skb, 4);
+
+ memmove(dest_pt, src_pt, len);
+ } else {
+ /* should never happen because
+ * sufficient headroom was reserved
+ */
+ return -ENOBUFS;
+ }
+ } else {
+ skb_put(skb, 4);
+ }
+ temp_len += 4;
+ }
+
+ cs->id = cpu_to_be32(USB_REQ_DATA_TX);
+ cs->len = cpu_to_be32(temp_len);
+ cs->payload_len_nw = cpu_to_be32(temp_payload_len);
+
+ return 0;
+}
+
+static void plfxlc_op_tx(struct ieee80211_hw *hw,
+ struct ieee80211_tx_control *control,
+ struct sk_buff *skb)
+{
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct plfxlc_header *plhdr = (void *)skb->data;
+ struct plfxlc_mac *mac = plfxlc_hw_mac(hw);
+ struct plfxlc_usb *usb = &mac->chip.usb;
+ unsigned long flags;
+ int r;
+
+ r = plfxlc_fill_ctrlset(mac, skb);
+ if (r)
+ goto fail;
+
+ info->rate_driver_data[0] = hw;
+
+ if (plhdr->frametype == IEEE80211_FTYPE_DATA) {
+ u8 *dst_mac = plhdr->dmac;
+ u8 sidx;
+ bool found = false;
+ struct plfxlc_usb_tx *tx = &usb->tx;
+
+ for (sidx = 0; sidx < MAX_STA_NUM; sidx++) {
+ if (!(tx->station[sidx].flag & STATION_CONNECTED_FLAG))
+ continue;
+ if (memcmp(tx->station[sidx].mac, dst_mac, ETH_ALEN))
+ continue;
+ found = true;
+ break;
+ }
+
+ /* Default to broadcast address for unknown MACs */
+ if (!found)
+ sidx = STA_BROADCAST_INDEX;
+
+ /* Stop OS from sending packets, if the queue is half full */
+ if (skb_queue_len(&tx->station[sidx].data_list) > 60)
+ ieee80211_stop_queues(plfxlc_usb_to_hw(usb));
+
+ /* Schedule packet for transmission if queue is not full */
+ if (skb_queue_len(&tx->station[sidx].data_list) > 256)
+ goto fail;
+ skb_queue_tail(&tx->station[sidx].data_list, skb);
+ plfxlc_send_packet_from_data_queue(usb);
+
+ } else {
+ spin_lock_irqsave(&usb->tx.lock, flags);
+ r = plfxlc_usb_wreq_async(&mac->chip.usb, skb->data, skb->len,
+ USB_REQ_DATA_TX, plfxlc_tx_urb_complete, skb);
+ spin_unlock_irqrestore(&usb->tx.lock, flags);
+ if (r)
+ goto fail;
+ }
+ return;
+
+fail:
+ dev_kfree_skb(skb);
+}
+
+static int plfxlc_filter_ack(struct ieee80211_hw *hw, struct ieee80211_hdr *rx_hdr,
+ struct ieee80211_rx_status *stats)
+{
+ struct plfxlc_mac *mac = plfxlc_hw_mac(hw);
+ struct sk_buff_head *q;
+ int i, position = 0;
+ unsigned long flags;
+ struct sk_buff *skb;
+ bool found = false;
+
+ if (!ieee80211_is_ack(rx_hdr->frame_control))
+ return 0;
+
+ dev_dbg(plfxlc_mac_dev(mac), "ACK Received\n");
+
+ /* code based on zy driver, this logic may need fix */
+ q = &mac->ack_wait_queue;
+ spin_lock_irqsave(&q->lock, flags);
+
+ skb_queue_walk(q, skb) {
+ struct ieee80211_hdr *tx_hdr;
+
+ position++;
+
+ if (mac->ack_pending && skb_queue_is_first(q, skb))
+ continue;
+ if (mac->ack_pending == 0)
+ break;
+
+ tx_hdr = (struct ieee80211_hdr *)skb->data;
+ if (likely(ether_addr_equal(tx_hdr->addr2, rx_hdr->addr1))) {
+ found = 1;
+ break;
+ }
+ }
+
+ if (found) {
+ for (i = 1; i < position; i++)
+ skb = __skb_dequeue(q);
+ if (i == position) {
+ plfxlc_mac_tx_status(hw, skb,
+ mac->ack_pending ?
+ mac->ack_signal : 0,
+ NULL);
+ mac->ack_pending = 0;
+ }
+
+ mac->ack_pending = skb_queue_len(q) ? 1 : 0;
+ mac->ack_signal = stats->signal;
+ }
+
+ spin_unlock_irqrestore(&q->lock, flags);
+ return 1;
+}
+
+int plfxlc_mac_rx(struct ieee80211_hw *hw, const u8 *buffer,
+ unsigned int length)
+{
+ struct plfxlc_mac *mac = plfxlc_hw_mac(hw);
+ struct ieee80211_rx_status stats;
+ const struct rx_status *status;
+ unsigned int payload_length;
+ struct plfxlc_usb_tx *tx;
+ struct sk_buff *skb;
+ int need_padding;
+ __le16 fc;
+ int sidx;
+
+ /* Packet blockade during disabled interface. */
+ if (!mac->vif)
+ return 0;
+
+ status = (struct rx_status *)buffer;
+
+ memset(&stats, 0, sizeof(stats));
+
+ stats.flag = 0;
+ stats.freq = 2412;
+ stats.band = NL80211_BAND_LC;
+ mac->rssi = -15 * be16_to_cpu(status->rssi) / 10;
+
+ stats.signal = mac->rssi;
+
+ if (status->rate_idx > 7)
+ stats.rate_idx = 0;
+ else
+ stats.rate_idx = status->rate_idx;
+
+ mac->crc_errors = be64_to_cpu(status->crc_error_count);
+
+ /* TODO bad frame check for CRC error*/
+ if (plfxlc_filter_ack(hw, (struct ieee80211_hdr *)buffer, &stats) &&
+ !mac->pass_ctrl)
+ return 0;
+
+ buffer += sizeof(struct rx_status);
+ payload_length = get_unaligned_be32(buffer);
+
+ if (payload_length > 1560) {
+ dev_err(plfxlc_mac_dev(mac), " > MTU %u\n", payload_length);
+ return 0;
+ }
+ buffer += sizeof(u32);
+
+ fc = get_unaligned((__le16 *)buffer);
+ need_padding = ieee80211_is_data_qos(fc) ^ ieee80211_has_a4(fc);
+
+ tx = &mac->chip.usb.tx;
+
+ for (sidx = 0; sidx < MAX_STA_NUM - 1; sidx++) {
+ if (memcmp(&buffer[10], tx->station[sidx].mac, ETH_ALEN))
+ continue;
+ if (tx->station[sidx].flag & STATION_CONNECTED_FLAG) {
+ tx->station[sidx].flag |= STATION_HEARTBEAT_FLAG;
+ break;
+ }
+ }
+
+ if (sidx == MAX_STA_NUM - 1) {
+ for (sidx = 0; sidx < MAX_STA_NUM - 1; sidx++) {
+ if (tx->station[sidx].flag & STATION_CONNECTED_FLAG)
+ continue;
+ memcpy(tx->station[sidx].mac, &buffer[10], ETH_ALEN);
+ tx->station[sidx].flag |= STATION_CONNECTED_FLAG;
+ tx->station[sidx].flag |= STATION_HEARTBEAT_FLAG;
+ break;
+ }
+ }
+
+ switch (buffer[0]) {
+ case IEEE80211_STYPE_PROBE_REQ:
+ dev_dbg(plfxlc_mac_dev(mac), "Probe request\n");
+ break;
+ case IEEE80211_STYPE_ASSOC_REQ:
+ dev_dbg(plfxlc_mac_dev(mac), "Association request\n");
+ break;
+ case IEEE80211_STYPE_AUTH:
+ dev_dbg(plfxlc_mac_dev(mac), "Authentication req\n");
+ break;
+ case IEEE80211_FTYPE_DATA:
+ dev_dbg(plfxlc_mac_dev(mac), "802.11 data frame\n");
+ break;
+ }
+
+ skb = dev_alloc_skb(payload_length + (need_padding ? 2 : 0));
+ if (!skb)
+ return -ENOMEM;
+
+ if (need_padding)
+ /* Make sure that the payload data is 4 byte aligned. */
+ skb_reserve(skb, 2);
+
+ skb_put_data(skb, buffer, payload_length);
+ memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats));
+ ieee80211_rx_irqsafe(hw, skb);
+ return 0;
+}
+
+static int plfxlc_op_add_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct plfxlc_mac *mac = plfxlc_hw_mac(hw);
+ static const char * const iftype80211[] = {
+ [NL80211_IFTYPE_STATION] = "Station",
+ [NL80211_IFTYPE_ADHOC] = "Adhoc"
+ };
+
+ if (mac->type != NL80211_IFTYPE_UNSPECIFIED)
+ return -EOPNOTSUPP;
+
+ if (vif->type == NL80211_IFTYPE_ADHOC ||
+ vif->type == NL80211_IFTYPE_STATION) {
+ dev_dbg(plfxlc_mac_dev(mac), "%s %s\n", __func__,
+ iftype80211[vif->type]);
+ mac->type = vif->type;
+ mac->vif = vif;
+ return 0;
+ }
+ dev_dbg(plfxlc_mac_dev(mac), "unsupported iftype\n");
+ return -EOPNOTSUPP;
+}
+
+static void plfxlc_op_remove_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct plfxlc_mac *mac = plfxlc_hw_mac(hw);
+
+ mac->type = NL80211_IFTYPE_UNSPECIFIED;
+ mac->vif = NULL;
+}
+
+static int plfxlc_op_config(struct ieee80211_hw *hw, u32 changed)
+{
+ return 0;
+}
+
+#define SUPPORTED_FIF_FLAGS \
+ (FIF_ALLMULTI | FIF_FCSFAIL | FIF_CONTROL | \
+ FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)
+static void plfxlc_op_configure_filter(struct ieee80211_hw *hw,
+ unsigned int changed_flags,
+ unsigned int *new_flags,
+ u64 multicast)
+{
+ struct plfxlc_mc_hash hash = {
+ .low = multicast,
+ .high = multicast >> 32,
+ };
+ struct plfxlc_mac *mac = plfxlc_hw_mac(hw);
+ unsigned long flags;
+
+ /* Only deal with supported flags */
+ *new_flags &= SUPPORTED_FIF_FLAGS;
+
+ /* If multicast parameter
+ * (as returned by plfxlc_op_prepare_multicast)
+ * has changed, no bit in changed_flags is set. To handle this
+ * situation, we do not return if changed_flags is 0. If we do so,
+ * we will have some issue with IPv6 which uses multicast for link
+ * layer address resolution.
+ */
+ if (*new_flags & (FIF_ALLMULTI))
+ plfxlc_mc_add_all(&hash);
+
+ spin_lock_irqsave(&mac->lock, flags);
+ mac->pass_failed_fcs = !!(*new_flags & FIF_FCSFAIL);
+ mac->pass_ctrl = !!(*new_flags & FIF_CONTROL);
+ mac->multicast_hash = hash;
+ spin_unlock_irqrestore(&mac->lock, flags);
+
+ /* no handling required for FIF_OTHER_BSS as we don't currently
+ * do BSSID filtering
+ */
+ /* FIXME: in future it would be nice to enable the probe response
+ * filter (so that the driver doesn't see them) until
+ * FIF_BCN_PRBRESP_PROMISC is set. however due to atomicity here, we'd
+ * have to schedule work to enable prbresp reception, which might
+ * happen too late. For now we'll just listen and forward them all the
+ * time.
+ */
+}
+
+static void plfxlc_op_bss_info_changed(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *bss_conf,
+ u32 changes)
+{
+ struct plfxlc_mac *mac = plfxlc_hw_mac(hw);
+ int associated;
+
+ dev_dbg(plfxlc_mac_dev(mac), "changes: %x\n", changes);
+
+ if (mac->type != NL80211_IFTYPE_ADHOC) { /* for STATION */
+ associated = is_valid_ether_addr(bss_conf->bssid);
+ goto exit_all;
+ }
+ /* for ADHOC */
+ associated = true;
+ if (changes & BSS_CHANGED_BEACON) {
+ struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
+
+ if (beacon) {
+ /*beacon is hardcoded in firmware */
+ kfree_skb(beacon);
+ /*Returned skb is used only once and
+ * low-level driver is
+ * responsible for freeing it.
+ */
+ }
+ }
+
+ if (changes & BSS_CHANGED_BEACON_ENABLED) {
+ u16 interval = 0;
+ u8 period = 0;
+
+ if (bss_conf->enable_beacon) {
+ period = bss_conf->dtim_period;
+ interval = bss_conf->beacon_int;
+ }
+
+ spin_lock_irq(&mac->lock);
+ mac->beacon.period = period;
+ mac->beacon.interval = interval;
+ mac->beacon.last_update = jiffies;
+ spin_unlock_irq(&mac->lock);
+
+ plfxlc_set_beacon_interval(&mac->chip, interval,
+ period, mac->type);
+ }
+exit_all:
+ spin_lock_irq(&mac->lock);
+ mac->associated = associated;
+ spin_unlock_irq(&mac->lock);
+}
+
+static int plfxlc_get_stats(struct ieee80211_hw *hw,
+ struct ieee80211_low_level_stats *stats)
+{
+ stats->dot11ACKFailureCount = 0;
+ stats->dot11RTSFailureCount = 0;
+ stats->dot11FCSErrorCount = 0;
+ stats->dot11RTSSuccessCount = 0;
+ return 0;
+}
+
+static const char et_strings[][ETH_GSTRING_LEN] = {
+ "phy_rssi",
+ "phy_rx_crc_err"
+};
+
+static int plfxlc_get_et_sset_count(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif, int sset)
+{
+ if (sset == ETH_SS_STATS)
+ return ARRAY_SIZE(et_strings);
+
+ return 0;
+}
+
+static void plfxlc_get_et_strings(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ u32 sset, u8 *data)
+{
+ if (sset == ETH_SS_STATS)
+ memcpy(data, *et_strings, sizeof(et_strings));
+}
+
+static void plfxlc_get_et_stats(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ethtool_stats *stats, u64 *data)
+{
+ struct plfxlc_mac *mac = plfxlc_hw_mac(hw);
+
+ data[0] = mac->rssi;
+ data[1] = mac->crc_errors;
+}
+
+static int plfxlc_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
+{
+ return 0;
+}
+
+static const struct ieee80211_ops plfxlc_ops = {
+ .tx = plfxlc_op_tx,
+ .start = plfxlc_op_start,
+ .stop = plfxlc_op_stop,
+ .add_interface = plfxlc_op_add_interface,
+ .remove_interface = plfxlc_op_remove_interface,
+ .set_rts_threshold = plfxlc_set_rts_threshold,
+ .config = plfxlc_op_config,
+ .configure_filter = plfxlc_op_configure_filter,
+ .bss_info_changed = plfxlc_op_bss_info_changed,
+ .get_stats = plfxlc_get_stats,
+ .get_et_sset_count = plfxlc_get_et_sset_count,
+ .get_et_stats = plfxlc_get_et_stats,
+ .get_et_strings = plfxlc_get_et_strings,
+};
+
+struct ieee80211_hw *plfxlc_mac_alloc_hw(struct usb_interface *intf)
+{
+ struct ieee80211_hw *hw;
+ struct plfxlc_mac *mac;
+
+ hw = ieee80211_alloc_hw(sizeof(struct plfxlc_mac), &plfxlc_ops);
+ if (!hw) {
+ dev_dbg(&intf->dev, "out of memory\n");
+ return NULL;
+ }
+ set_wiphy_dev(hw->wiphy, &intf->dev);
+
+ mac = plfxlc_hw_mac(hw);
+ memset(mac, 0, sizeof(*mac));
+ spin_lock_init(&mac->lock);
+ mac->hw = hw;
+
+ mac->type = NL80211_IFTYPE_UNSPECIFIED;
+
+ memcpy(mac->channels, plfxlc_channels, sizeof(plfxlc_channels));
+ memcpy(mac->rates, plfxlc_rates, sizeof(plfxlc_rates));
+ mac->band.n_bitrates = ARRAY_SIZE(plfxlc_rates);
+ mac->band.bitrates = mac->rates;
+ mac->band.n_channels = ARRAY_SIZE(plfxlc_channels);
+ mac->band.channels = mac->channels;
+ hw->wiphy->bands[NL80211_BAND_LC] = &mac->band;
+ hw->conf.chandef.width = NL80211_CHAN_WIDTH_20;
+
+ ieee80211_hw_set(hw, RX_INCLUDES_FCS);
+ ieee80211_hw_set(hw, SIGNAL_DBM);
+ ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
+ ieee80211_hw_set(hw, MFP_CAPABLE);
+
+ hw->wiphy->interface_modes =
+ BIT(NL80211_IFTYPE_STATION) |
+ BIT(NL80211_IFTYPE_ADHOC);
+ hw->max_signal = 100;
+ hw->queues = 1;
+ /* 4 for 32 bit alignment if no tailroom */
+ hw->extra_tx_headroom = sizeof(struct plfxlc_ctrlset) + 4;
+ /* Tell mac80211 that we support multi rate retries */
+ hw->max_rates = IEEE80211_TX_MAX_RATES;
+ hw->max_rate_tries = 18; /* 9 rates * 2 retries/rate */
+
+ skb_queue_head_init(&mac->ack_wait_queue);
+ mac->ack_pending = 0;
+
+ plfxlc_chip_init(&mac->chip, hw, intf);
+
+ SET_IEEE80211_DEV(hw, &intf->dev);
+ return hw;
+}
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2021 pureLiFi
+ */
+
+#ifndef PLFXLC_MAC_H
+#define PLFXLC_MAC_H
+
+#include <linux/kernel.h>
+#include <net/mac80211.h>
+
+#include "chip.h"
+
+#define PURELIFI_CCK 0x00
+#define PURELIFI_OFDM 0x10
+#define PURELIFI_CCK_PREA_SHORT 0x20
+
+#define PURELIFI_OFDM_PLCP_RATE_6M 0xb
+#define PURELIFI_OFDM_PLCP_RATE_9M 0xf
+#define PURELIFI_OFDM_PLCP_RATE_12M 0xa
+#define PURELIFI_OFDM_PLCP_RATE_18M 0xe
+#define PURELIFI_OFDM_PLCP_RATE_24M 0x9
+#define PURELIFI_OFDM_PLCP_RATE_36M 0xd
+#define PURELIFI_OFDM_PLCP_RATE_48M 0x8
+#define PURELIFI_OFDM_PLCP_RATE_54M 0xc
+
+#define PURELIFI_CCK_RATE_1M (PURELIFI_CCK | 0x00)
+#define PURELIFI_CCK_RATE_2M (PURELIFI_CCK | 0x01)
+#define PURELIFI_CCK_RATE_5_5M (PURELIFI_CCK | 0x02)
+#define PURELIFI_CCK_RATE_11M (PURELIFI_CCK | 0x03)
+#define PURELIFI_OFDM_RATE_6M (PURELIFI_OFDM | PURELIFI_OFDM_PLCP_RATE_6M)
+#define PURELIFI_OFDM_RATE_9M (PURELIFI_OFDM | PURELIFI_OFDM_PLCP_RATE_9M)
+#define PURELIFI_OFDM_RATE_12M (PURELIFI_OFDM | PURELIFI_OFDM_PLCP_RATE_12M)
+#define PURELIFI_OFDM_RATE_18M (PURELIFI_OFDM | PURELIFI_OFDM_PLCP_RATE_18M)
+#define PURELIFI_OFDM_RATE_24M (PURELIFI_OFDM | PURELIFI_OFDM_PLCP_RATE_24M)
+#define PURELIFI_OFDM_RATE_36M (PURELIFI_OFDM | PURELIFI_OFDM_PLCP_RATE_36M)
+#define PURELIFI_OFDM_RATE_48M (PURELIFI_OFDM | PURELIFI_OFDM_PLCP_RATE_48M)
+#define PURELIFI_OFDM_RATE_54M (PURELIFI_OFDM | PURELIFI_OFDM_PLCP_RATE_54M)
+
+#define PURELIFI_RX_ERROR 0x80
+#define PURELIFI_RX_CRC32_ERROR 0x10
+
+#define PLF_REGDOMAIN_FCC 0x10
+#define PLF_REGDOMAIN_IC 0x20
+#define PLF_REGDOMAIN_ETSI 0x30
+#define PLF_REGDOMAIN_SPAIN 0x31
+#define PLF_REGDOMAIN_FRANCE 0x32
+#define PLF_REGDOMAIN_JAPAN_2 0x40
+#define PLF_REGDOMAIN_JAPAN 0x41
+#define PLF_REGDOMAIN_JAPAN_3 0x49
+
+#define PLF_RX_ERROR 0x80
+#define PLF_RX_CRC32_ERROR 0x10
+
+enum {
+ MODULATION_RATE_BPSK_1_2 = 0,
+ MODULATION_RATE_BPSK_3_4,
+ MODULATION_RATE_QPSK_1_2,
+ MODULATION_RATE_QPSK_3_4,
+ MODULATION_RATE_QAM16_1_2,
+ MODULATION_RATE_QAM16_3_4,
+ MODULATION_RATE_QAM64_1_2,
+ MODULATION_RATE_QAM64_3_4,
+ MODULATION_RATE_AUTO,
+ MODULATION_RATE_NUM
+};
+
+#define plfxlc_mac_dev(mac) plfxlc_chip_dev(&(mac)->chip)
+
+#define PURELIFI_MAC_STATS_BUFFER_SIZE 16
+#define PURELIFI_MAC_MAX_ACK_WAITERS 50
+
+struct plfxlc_ctrlset {
+ /* id should be plf_usb_req_enum */
+ __be32 id;
+ __be32 len;
+ u8 modulation;
+ u8 control;
+ u8 service;
+ u8 pad;
+ __le16 packet_length;
+ __le16 current_length;
+ __le16 next_frame_length;
+ __le16 tx_length;
+ __be32 payload_len_nw;
+} __packed;
+
+/* overlay */
+struct plfxlc_header {
+ struct plfxlc_ctrlset plf_ctrl;
+ u32 frametype;
+ u8 *dmac;
+} __packed;
+
+struct tx_status {
+ u8 type;
+ u8 id;
+ u8 rate;
+ u8 pad;
+ u8 mac[ETH_ALEN];
+ u8 retry;
+ u8 failure;
+} __packed;
+
+struct beacon {
+ struct delayed_work watchdog_work;
+ struct sk_buff *cur_beacon;
+ unsigned long last_update;
+ u16 interval;
+ u8 period;
+};
+
+enum plfxlc_device_flags {
+ PURELIFI_DEVICE_RUNNING,
+};
+
+struct plfxlc_mac {
+ struct ieee80211_hw *hw;
+ struct ieee80211_vif *vif;
+ struct beacon beacon;
+ struct work_struct set_rts_cts_work;
+ struct work_struct process_intr;
+ struct plfxlc_mc_hash multicast_hash;
+ struct sk_buff_head ack_wait_queue;
+ struct ieee80211_channel channels[14];
+ struct ieee80211_rate rates[12];
+ struct ieee80211_supported_band band;
+ struct plfxlc_chip chip;
+ spinlock_t lock; /* lock for mac data */
+ u8 intr_buffer[USB_MAX_EP_INT_BUFFER];
+ char serial_number[PURELIFI_SERIAL_LEN];
+ unsigned char hw_address[ETH_ALEN];
+ u8 default_regdomain;
+ unsigned long flags;
+ bool pass_failed_fcs;
+ bool pass_ctrl;
+ bool ack_pending;
+ int ack_signal;
+ int associated;
+ u8 regdomain;
+ u8 channel;
+ int type;
+ u64 crc_errors;
+ u64 rssi;
+};
+
+static inline struct plfxlc_mac *
+plfxlc_hw_mac(struct ieee80211_hw *hw)
+{
+ return hw->priv;
+}
+
+static inline struct plfxlc_mac *
+plfxlc_chip_to_mac(struct plfxlc_chip *chip)
+{
+ return container_of(chip, struct plfxlc_mac, chip);
+}
+
+static inline struct plfxlc_mac *
+plfxlc_usb_to_mac(struct plfxlc_usb *usb)
+{
+ return plfxlc_chip_to_mac(plfxlc_usb_to_chip(usb));
+}
+
+static inline u8 *plfxlc_mac_get_perm_addr(struct plfxlc_mac *mac)
+{
+ return mac->hw->wiphy->perm_addr;
+}
+
+struct ieee80211_hw *plfxlc_mac_alloc_hw(struct usb_interface *intf);
+void plfxlc_mac_release(struct plfxlc_mac *mac);
+
+int plfxlc_mac_preinit_hw(struct ieee80211_hw *hw, const u8 *hw_address);
+int plfxlc_mac_init_hw(struct ieee80211_hw *hw);
+
+int plfxlc_mac_rx(struct ieee80211_hw *hw, const u8 *buffer,
+ unsigned int length);
+void plfxlc_mac_tx_failed(struct urb *urb);
+void plfxlc_mac_tx_to_dev(struct sk_buff *skb, int error);
+int plfxlc_op_start(struct ieee80211_hw *hw);
+void plfxlc_op_stop(struct ieee80211_hw *hw);
+int plfxlc_restore_settings(struct plfxlc_mac *mac);
+
+#endif /* PLFXLC_MAC_H */
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2021 pureLiFi
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/usb.h>
+#include <linux/workqueue.h>
+#include <linux/proc_fs.h>
+#include <linux/fs.h>
+#include <linux/string.h>
+#include <linux/module.h>
+#include <net/mac80211.h>
+#include <asm/unaligned.h>
+#include <linux/version.h>
+#include <linux/sysfs.h>
+
+#include "mac.h"
+#include "usb.h"
+#include "chip.h"
+
+static const struct usb_device_id usb_ids[] = {
+ { USB_DEVICE(PURELIFI_X_VENDOR_ID_0, PURELIFI_X_PRODUCT_ID_0),
+ .driver_info = DEVICE_LIFI_X },
+ { USB_DEVICE(PURELIFI_XC_VENDOR_ID_0, PURELIFI_XC_PRODUCT_ID_0),
+ .driver_info = DEVICE_LIFI_XC },
+ { USB_DEVICE(PURELIFI_XL_VENDOR_ID_0, PURELIFI_XL_PRODUCT_ID_0),
+ .driver_info = DEVICE_LIFI_XL },
+ {}
+};
+
+void plfxlc_send_packet_from_data_queue(struct plfxlc_usb *usb)
+{
+ struct plfxlc_usb_tx *tx = &usb->tx;
+ struct sk_buff *skb = NULL;
+ unsigned long flags;
+ u8 last_served_sidx;
+
+ spin_lock_irqsave(&tx->lock, flags);
+ last_served_sidx = usb->sidx;
+ do {
+ usb->sidx = (usb->sidx + 1) % MAX_STA_NUM;
+ if (!(tx->station[usb->sidx].flag & STATION_CONNECTED_FLAG))
+ continue;
+ if (!(tx->station[usb->sidx].flag & STATION_FIFO_FULL_FLAG))
+ skb = skb_peek(&tx->station[usb->sidx].data_list);
+ } while ((usb->sidx != last_served_sidx) && (!skb));
+
+ if (skb) {
+ skb = skb_dequeue(&tx->station[usb->sidx].data_list);
+ plfxlc_usb_wreq_async(usb, skb->data, skb->len, USB_REQ_DATA_TX,
+ plfxlc_tx_urb_complete, skb);
+ if (skb_queue_len(&tx->station[usb->sidx].data_list) <= 60)
+ ieee80211_wake_queues(plfxlc_usb_to_hw(usb));
+ }
+ spin_unlock_irqrestore(&tx->lock, flags);
+}
+
+static void handle_rx_packet(struct plfxlc_usb *usb, const u8 *buffer,
+ unsigned int length)
+{
+ plfxlc_mac_rx(plfxlc_usb_to_hw(usb), buffer, length);
+}
+
+static void rx_urb_complete(struct urb *urb)
+{
+ struct plfxlc_usb_tx *tx;
+ struct plfxlc_usb *usb;
+ unsigned int length;
+ const u8 *buffer;
+ u16 status;
+ u8 sidx;
+ int r;
+
+ if (!urb) {
+ pr_err("urb is NULL\n");
+ return;
+ }
+ if (!urb->context) {
+ pr_err("urb ctx is NULL\n");
+ return;
+ }
+ usb = urb->context;
+
+ if (usb->initialized != 1) {
+ pr_err("usb is not initialized\n");
+ return;
+ }
+
+ tx = &usb->tx;
+ switch (urb->status) {
+ case 0:
+ break;
+ case -ESHUTDOWN:
+ case -EINVAL:
+ case -ENODEV:
+ case -ENOENT:
+ case -ECONNRESET:
+ case -EPIPE:
+ dev_dbg(plfxlc_urb_dev(urb), "urb %p error %d\n", urb, urb->status);
+ return;
+ default:
+ dev_dbg(plfxlc_urb_dev(urb), "urb %p error %d\n", urb, urb->status);
+ if (tx->submitted_urbs++ < PURELIFI_URB_RETRY_MAX) {
+ dev_dbg(plfxlc_urb_dev(urb), "urb %p resubmit %d", urb,
+ tx->submitted_urbs++);
+ goto resubmit;
+ } else {
+ dev_dbg(plfxlc_urb_dev(urb), "urb %p max resubmits reached", urb);
+ tx->submitted_urbs = 0;
+ return;
+ }
+ }
+
+ buffer = urb->transfer_buffer;
+ length = le32_to_cpu(*(__le32 *)(buffer + sizeof(struct rx_status)))
+ + sizeof(u32);
+
+ if (urb->actual_length != (PLF_MSG_STATUS_OFFSET + 1)) {
+ if (usb->initialized && usb->link_up)
+ handle_rx_packet(usb, buffer, length);
+ goto resubmit;
+ }
+
+ status = buffer[PLF_MSG_STATUS_OFFSET];
+
+ switch (status) {
+ case STATION_FIFO_ALMOST_FULL_NOT_MESSAGE:
+ dev_dbg(&usb->intf->dev,
+ "FIFO full not packet receipt\n");
+ tx->mac_fifo_full = 1;
+ for (sidx = 0; sidx < MAX_STA_NUM; sidx++)
+ tx->station[sidx].flag |= STATION_FIFO_FULL_FLAG;
+ break;
+ case STATION_FIFO_ALMOST_FULL_MESSAGE:
+ dev_dbg(&usb->intf->dev, "FIFO full packet receipt\n");
+
+ for (sidx = 0; sidx < MAX_STA_NUM; sidx++)
+ tx->station[sidx].flag &= STATION_ACTIVE_FLAG;
+
+ plfxlc_send_packet_from_data_queue(usb);
+ break;
+ case STATION_CONNECT_MESSAGE:
+ usb->link_up = 1;
+ dev_dbg(&usb->intf->dev, "ST_CONNECT_MSG packet receipt\n");
+ break;
+ case STATION_DISCONNECT_MESSAGE:
+ usb->link_up = 0;
+ dev_dbg(&usb->intf->dev, "ST_DISCONN_MSG packet receipt\n");
+ break;
+ default:
+ dev_dbg(&usb->intf->dev, "Unknown packet receipt\n");
+ break;
+ }
+
+resubmit:
+ r = usb_submit_urb(urb, GFP_ATOMIC);
+ if (r)
+ dev_dbg(plfxlc_urb_dev(urb), "urb %p resubmit fail (%d)\n", urb, r);
+}
+
+static struct urb *alloc_rx_urb(struct plfxlc_usb *usb)
+{
+ struct usb_device *udev = plfxlc_usb_to_usbdev(usb);
+ struct urb *urb;
+ void *buffer;
+
+ urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!urb)
+ return NULL;
+
+ buffer = usb_alloc_coherent(udev, USB_MAX_RX_SIZE, GFP_KERNEL,
+ &urb->transfer_dma);
+ if (!buffer) {
+ usb_free_urb(urb);
+ return NULL;
+ }
+
+ usb_fill_bulk_urb(urb, udev, usb_rcvbulkpipe(udev, EP_DATA_IN),
+ buffer, USB_MAX_RX_SIZE,
+ rx_urb_complete, usb);
+ urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+ return urb;
+}
+
+static void free_rx_urb(struct urb *urb)
+{
+ if (!urb)
+ return;
+ usb_free_coherent(urb->dev, urb->transfer_buffer_length,
+ urb->transfer_buffer, urb->transfer_dma);
+ usb_free_urb(urb);
+}
+
+static int __lf_x_usb_enable_rx(struct plfxlc_usb *usb)
+{
+ struct plfxlc_usb_rx *rx = &usb->rx;
+ struct urb **urbs;
+ int i, r;
+
+ r = -ENOMEM;
+ urbs = kcalloc(RX_URBS_COUNT, sizeof(struct urb *), GFP_KERNEL);
+ if (!urbs)
+ goto error;
+
+ for (i = 0; i < RX_URBS_COUNT; i++) {
+ urbs[i] = alloc_rx_urb(usb);
+ if (!urbs[i])
+ goto error;
+ }
+
+ spin_lock_irq(&rx->lock);
+
+ dev_dbg(plfxlc_usb_dev(usb), "irq_disabled %d\n", irqs_disabled());
+
+ if (rx->urbs) {
+ spin_unlock_irq(&rx->lock);
+ r = 0;
+ goto error;
+ }
+ rx->urbs = urbs;
+ rx->urbs_count = RX_URBS_COUNT;
+ spin_unlock_irq(&rx->lock);
+
+ for (i = 0; i < RX_URBS_COUNT; i++) {
+ r = usb_submit_urb(urbs[i], GFP_KERNEL);
+ if (r)
+ goto error_submit;
+ }
+
+ return 0;
+
+error_submit:
+ for (i = 0; i < RX_URBS_COUNT; i++)
+ usb_kill_urb(urbs[i]);
+ spin_lock_irq(&rx->lock);
+ rx->urbs = NULL;
+ rx->urbs_count = 0;
+ spin_unlock_irq(&rx->lock);
+error:
+ if (urbs) {
+ for (i = 0; i < RX_URBS_COUNT; i++)
+ free_rx_urb(urbs[i]);
+ }
+ return r;
+}
+
+int plfxlc_usb_enable_rx(struct plfxlc_usb *usb)
+{
+ struct plfxlc_usb_rx *rx = &usb->rx;
+ int r;
+
+ mutex_lock(&rx->setup_mutex);
+ r = __lf_x_usb_enable_rx(usb);
+ if (!r)
+ usb->rx_usb_enabled = 1;
+
+ mutex_unlock(&rx->setup_mutex);
+
+ return r;
+}
+
+static void __lf_x_usb_disable_rx(struct plfxlc_usb *usb)
+{
+ struct plfxlc_usb_rx *rx = &usb->rx;
+ unsigned long flags;
+ unsigned int count;
+ struct urb **urbs;
+ int i;
+
+ spin_lock_irqsave(&rx->lock, flags);
+ urbs = rx->urbs;
+ count = rx->urbs_count;
+ spin_unlock_irqrestore(&rx->lock, flags);
+
+ if (!urbs)
+ return;
+
+ for (i = 0; i < count; i++) {
+ usb_kill_urb(urbs[i]);
+ free_rx_urb(urbs[i]);
+ }
+ kfree(urbs);
+ rx->urbs = NULL;
+ rx->urbs_count = 0;
+}
+
+void plfxlc_usb_disable_rx(struct plfxlc_usb *usb)
+{
+ struct plfxlc_usb_rx *rx = &usb->rx;
+
+ mutex_lock(&rx->setup_mutex);
+ __lf_x_usb_disable_rx(usb);
+ usb->rx_usb_enabled = 0;
+ mutex_unlock(&rx->setup_mutex);
+}
+
+void plfxlc_usb_disable_tx(struct plfxlc_usb *usb)
+{
+ struct plfxlc_usb_tx *tx = &usb->tx;
+ unsigned long flags;
+
+ clear_bit(PLF_BIT_ENABLED, &tx->enabled);
+
+ /* kill all submitted tx-urbs */
+ usb_kill_anchored_urbs(&tx->submitted);
+
+ spin_lock_irqsave(&tx->lock, flags);
+ WARN_ON(!skb_queue_empty(&tx->submitted_skbs));
+ WARN_ON(tx->submitted_urbs != 0);
+ tx->submitted_urbs = 0;
+ spin_unlock_irqrestore(&tx->lock, flags);
+
+ /* The stopped state is ignored, relying on ieee80211_wake_queues()
+ * in a potentionally following plfxlc_usb_enable_tx().
+ */
+}
+
+void plfxlc_usb_enable_tx(struct plfxlc_usb *usb)
+{
+ struct plfxlc_usb_tx *tx = &usb->tx;
+ unsigned long flags;
+
+ spin_lock_irqsave(&tx->lock, flags);
+ set_bit(PLF_BIT_ENABLED, &tx->enabled);
+ tx->submitted_urbs = 0;
+ ieee80211_wake_queues(plfxlc_usb_to_hw(usb));
+ tx->stopped = 0;
+ spin_unlock_irqrestore(&tx->lock, flags);
+}
+
+void plfxlc_tx_urb_complete(struct urb *urb)
+{
+ struct ieee80211_tx_info *info;
+ struct plfxlc_usb *usb;
+ struct sk_buff *skb;
+
+ skb = urb->context;
+ info = IEEE80211_SKB_CB(skb);
+ /* grab 'usb' pointer before handing off the skb (since
+ * it might be freed by plfxlc_mac_tx_to_dev or mac80211)
+ */
+ usb = &plfxlc_hw_mac(info->rate_driver_data[0])->chip.usb;
+
+ switch (urb->status) {
+ case 0:
+ break;
+ case -ESHUTDOWN:
+ case -EINVAL:
+ case -ENODEV:
+ case -ENOENT:
+ case -ECONNRESET:
+ case -EPIPE:
+ dev_dbg(plfxlc_urb_dev(urb), "urb %p error %d\n", urb, urb->status);
+ break;
+ default:
+ dev_dbg(plfxlc_urb_dev(urb), "urb %p error %d\n", urb, urb->status);
+ return;
+ }
+
+ plfxlc_mac_tx_to_dev(skb, urb->status);
+ plfxlc_send_packet_from_data_queue(usb);
+ usb_free_urb(urb);
+}
+
+static inline void init_usb_rx(struct plfxlc_usb *usb)
+{
+ struct plfxlc_usb_rx *rx = &usb->rx;
+
+ spin_lock_init(&rx->lock);
+ mutex_init(&rx->setup_mutex);
+
+ if (interface_to_usbdev(usb->intf)->speed == USB_SPEED_HIGH)
+ rx->usb_packet_size = 512;
+ else
+ rx->usb_packet_size = 64;
+
+ if (rx->fragment_length != 0)
+ dev_dbg(plfxlc_usb_dev(usb), "fragment_length error\n");
+}
+
+static inline void init_usb_tx(struct plfxlc_usb *usb)
+{
+ struct plfxlc_usb_tx *tx = &usb->tx;
+
+ spin_lock_init(&tx->lock);
+ clear_bit(PLF_BIT_ENABLED, &tx->enabled);
+ tx->stopped = 0;
+ skb_queue_head_init(&tx->submitted_skbs);
+ init_usb_anchor(&tx->submitted);
+}
+
+void plfxlc_usb_init(struct plfxlc_usb *usb, struct ieee80211_hw *hw,
+ struct usb_interface *intf)
+{
+ memset(usb, 0, sizeof(*usb));
+ usb->intf = usb_get_intf(intf);
+ usb_set_intfdata(usb->intf, hw);
+ init_usb_tx(usb);
+ init_usb_rx(usb);
+}
+
+void plfxlc_usb_release(struct plfxlc_usb *usb)
+{
+ plfxlc_op_stop(plfxlc_usb_to_hw(usb));
+ plfxlc_usb_disable_tx(usb);
+ plfxlc_usb_disable_rx(usb);
+ usb_set_intfdata(usb->intf, NULL);
+ usb_put_intf(usb->intf);
+}
+
+const char *plfxlc_speed(enum usb_device_speed speed)
+{
+ switch (speed) {
+ case USB_SPEED_LOW:
+ return "low";
+ case USB_SPEED_FULL:
+ return "full";
+ case USB_SPEED_HIGH:
+ return "high";
+ default:
+ return "unknown";
+ }
+}
+
+int plfxlc_usb_init_hw(struct plfxlc_usb *usb)
+{
+ int r;
+
+ r = usb_reset_configuration(plfxlc_usb_to_usbdev(usb));
+ if (r) {
+ dev_err(plfxlc_usb_dev(usb), "cfg reset failed (%d)\n", r);
+ return r;
+ }
+ return 0;
+}
+
+static void get_usb_req(struct usb_device *udev, void *buffer,
+ u32 buffer_len, enum plf_usb_req_enum usb_req_id,
+ struct plf_usb_req *usb_req)
+{
+ __be32 payload_len_nw = cpu_to_be32(buffer_len + FCS_LEN);
+ const u8 *buffer_src_p = buffer;
+ u8 *buffer_dst = usb_req->buf;
+ u32 temp_usb_len = 0;
+
+ usb_req->id = cpu_to_be32(usb_req_id);
+ usb_req->len = cpu_to_be32(0);
+
+ /* Copy buffer length into the transmitted buffer, as it is important
+ * for the Rx MAC to know its exact length.
+ */
+ if (usb_req->id == cpu_to_be32(USB_REQ_BEACON_WR)) {
+ memcpy(buffer_dst, &payload_len_nw, sizeof(payload_len_nw));
+ buffer_dst += sizeof(payload_len_nw);
+ temp_usb_len += sizeof(payload_len_nw);
+ }
+
+ memcpy(buffer_dst, buffer_src_p, buffer_len);
+ buffer_dst += buffer_len;
+ buffer_src_p += buffer_len;
+ temp_usb_len += buffer_len;
+
+ /* Set the FCS_LEN (4) bytes as 0 for CRC checking. */
+ memset(buffer_dst, 0, FCS_LEN);
+ buffer_dst += FCS_LEN;
+ temp_usb_len += FCS_LEN;
+
+ /* Round the packet to be transmitted to 4 bytes. */
+ if (temp_usb_len % PURELIFI_BYTE_NUM_ALIGNMENT) {
+ memset(buffer_dst, 0, PURELIFI_BYTE_NUM_ALIGNMENT -
+ (temp_usb_len %
+ PURELIFI_BYTE_NUM_ALIGNMENT));
+ buffer_dst += PURELIFI_BYTE_NUM_ALIGNMENT -
+ (temp_usb_len %
+ PURELIFI_BYTE_NUM_ALIGNMENT);
+ temp_usb_len += PURELIFI_BYTE_NUM_ALIGNMENT -
+ (temp_usb_len % PURELIFI_BYTE_NUM_ALIGNMENT);
+ }
+
+ usb_req->len = cpu_to_be32(temp_usb_len);
+}
+
+int plfxlc_usb_wreq_async(struct plfxlc_usb *usb, const u8 *buffer,
+ int buffer_len, enum plf_usb_req_enum usb_req_id,
+ usb_complete_t complete_fn,
+ void *context)
+{
+ struct usb_device *udev = interface_to_usbdev(usb->ez_usb);
+ struct urb *urb = usb_alloc_urb(0, GFP_ATOMIC);
+ int r;
+
+ usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, EP_DATA_OUT),
+ (void *)buffer, buffer_len, complete_fn, context);
+
+ r = usb_submit_urb(urb, GFP_ATOMIC);
+ if (r)
+ dev_err(&udev->dev, "Async write submit failed (%d)\n", r);
+
+ return r;
+}
+
+int plfxlc_usb_wreq(struct usb_interface *ez_usb, void *buffer, int buffer_len,
+ enum plf_usb_req_enum usb_req_id)
+{
+ struct usb_device *udev = interface_to_usbdev(ez_usb);
+ unsigned char *dma_buffer = NULL;
+ struct plf_usb_req usb_req;
+ int usb_bulk_msg_len;
+ int actual_length;
+ int r;
+
+ get_usb_req(udev, buffer, buffer_len, usb_req_id, &usb_req);
+ usb_bulk_msg_len = sizeof(__le32) + sizeof(__le32) +
+ be32_to_cpu(usb_req.len);
+
+ dma_buffer = kmemdup(&usb_req, usb_bulk_msg_len, GFP_KERNEL);
+
+ if (!dma_buffer) {
+ r = -ENOMEM;
+ goto error;
+ }
+
+ r = usb_bulk_msg(udev,
+ usb_sndbulkpipe(udev, EP_DATA_OUT),
+ dma_buffer, usb_bulk_msg_len,
+ &actual_length, USB_BULK_MSG_TIMEOUT_MS);
+ kfree(dma_buffer);
+error:
+ if (r) {
+ r = -ENOMEM;
+ dev_err(&udev->dev, "usb_bulk_msg failed (%d)\n", r);
+ }
+
+ return r;
+}
+
+static void slif_data_plane_sap_timer_callb(struct timer_list *t)
+{
+ struct plfxlc_usb *usb = from_timer(usb, t, tx.tx_retry_timer);
+
+ plfxlc_send_packet_from_data_queue(usb);
+ timer_setup(&usb->tx.tx_retry_timer,
+ slif_data_plane_sap_timer_callb, 0);
+ mod_timer(&usb->tx.tx_retry_timer, jiffies + TX_RETRY_BACKOFF_JIFF);
+}
+
+static void sta_queue_cleanup_timer_callb(struct timer_list *t)
+{
+ struct plfxlc_usb *usb = from_timer(usb, t, sta_queue_cleanup);
+ struct plfxlc_usb_tx *tx = &usb->tx;
+ int sidx;
+
+ for (sidx = 0; sidx < MAX_STA_NUM - 1; sidx++) {
+ if (!(tx->station[sidx].flag & STATION_CONNECTED_FLAG))
+ continue;
+ if (tx->station[sidx].flag & STATION_HEARTBEAT_FLAG) {
+ tx->station[sidx].flag ^= STATION_HEARTBEAT_FLAG;
+ } else {
+ memset(tx->station[sidx].mac, 0, ETH_ALEN);
+ tx->station[sidx].flag = 0;
+ }
+ }
+ timer_setup(&usb->sta_queue_cleanup,
+ sta_queue_cleanup_timer_callb, 0);
+ mod_timer(&usb->sta_queue_cleanup, jiffies + STA_QUEUE_CLEANUP_JIFF);
+}
+
+static int probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ u8 serial_number[PURELIFI_SERIAL_LEN];
+ struct ieee80211_hw *hw = NULL;
+ struct plfxlc_usb_tx *tx;
+ struct plfxlc_chip *chip;
+ struct plfxlc_usb *usb;
+ u8 hw_address[ETH_ALEN];
+ unsigned int i;
+ int r = 0;
+
+ hw = plfxlc_mac_alloc_hw(intf);
+
+ if (!hw) {
+ r = -ENOMEM;
+ goto error;
+ }
+
+ chip = &plfxlc_hw_mac(hw)->chip;
+ usb = &chip->usb;
+ usb->ez_usb = intf;
+ tx = &usb->tx;
+
+ r = plfxlc_upload_mac_and_serial(intf, hw_address, serial_number);
+ if (r) {
+ dev_err(&intf->dev, "MAC and Serial upload failed (%d)\n", r);
+ goto error;
+ }
+
+ chip->unit_type = STA;
+ dev_err(&intf->dev, "Unit type is station");
+
+ r = plfxlc_mac_preinit_hw(hw, hw_address);
+ if (r) {
+ dev_err(&intf->dev, "Init mac failed (%d)\n", r);
+ goto error;
+ }
+
+ r = ieee80211_register_hw(hw);
+ if (r) {
+ dev_err(&intf->dev, "Register device failed (%d)\n", r);
+ goto error;
+ }
+
+ if ((le16_to_cpu(interface_to_usbdev(intf)->descriptor.idVendor) ==
+ PURELIFI_XL_VENDOR_ID_0) &&
+ (le16_to_cpu(interface_to_usbdev(intf)->descriptor.idProduct) ==
+ PURELIFI_XL_PRODUCT_ID_0)) {
+ r = plfxlc_download_xl_firmware(intf);
+ } else {
+ r = plfxlc_download_fpga(intf);
+ }
+ if (r != 0) {
+ dev_err(&intf->dev, "FPGA download failed (%d)\n", r);
+ goto error;
+ }
+
+ tx->mac_fifo_full = 0;
+ spin_lock_init(&tx->lock);
+
+ msleep(PLF_MSLEEP_TIME);
+ r = plfxlc_usb_init_hw(usb);
+ if (r < 0) {
+ dev_err(&intf->dev, "usb_init_hw failed (%d)\n", r);
+ goto error;
+ }
+
+ msleep(PLF_MSLEEP_TIME);
+ r = plfxlc_chip_switch_radio(chip, PLFXLC_RADIO_ON);
+ if (r < 0) {
+ dev_dbg(&intf->dev, "chip_switch_radio_on failed (%d)\n", r);
+ goto error;
+ }
+
+ msleep(PLF_MSLEEP_TIME);
+ r = plfxlc_chip_set_rate(chip, 8);
+ if (r < 0) {
+ dev_dbg(&intf->dev, "chip_set_rate failed (%d)\n", r);
+ goto error;
+ }
+
+ msleep(PLF_MSLEEP_TIME);
+ r = plfxlc_usb_wreq(usb->ez_usb,
+ hw_address, ETH_ALEN, USB_REQ_MAC_WR);
+ if (r < 0) {
+ dev_dbg(&intf->dev, "MAC_WR failure (%d)\n", r);
+ goto error;
+ }
+
+ plfxlc_chip_enable_rxtx(chip);
+
+ /* Initialise the data plane Tx queue */
+ for (i = 0; i < MAX_STA_NUM; i++) {
+ skb_queue_head_init(&tx->station[i].data_list);
+ tx->station[i].flag = 0;
+ }
+
+ tx->station[STA_BROADCAST_INDEX].flag |= STATION_CONNECTED_FLAG;
+ for (i = 0; i < ETH_ALEN; i++)
+ tx->station[STA_BROADCAST_INDEX].mac[i] = 0xFF;
+
+ timer_setup(&tx->tx_retry_timer, slif_data_plane_sap_timer_callb, 0);
+ tx->tx_retry_timer.expires = jiffies + TX_RETRY_BACKOFF_JIFF;
+ add_timer(&tx->tx_retry_timer);
+
+ timer_setup(&usb->sta_queue_cleanup,
+ sta_queue_cleanup_timer_callb, 0);
+ usb->sta_queue_cleanup.expires = jiffies + STA_QUEUE_CLEANUP_JIFF;
+ add_timer(&usb->sta_queue_cleanup);
+
+ plfxlc_mac_init_hw(hw);
+ usb->initialized = true;
+ return 0;
+error:
+ if (hw) {
+ plfxlc_mac_release(plfxlc_hw_mac(hw));
+ ieee80211_unregister_hw(hw);
+ ieee80211_free_hw(hw);
+ }
+ dev_err(&intf->dev, "pureLifi:Device error");
+ return r;
+}
+
+static void disconnect(struct usb_interface *intf)
+{
+ struct ieee80211_hw *hw = plfxlc_intf_to_hw(intf);
+ struct plfxlc_mac *mac;
+ struct plfxlc_usb *usb;
+
+ /* Either something really bad happened, or
+ * we're just dealing with a DEVICE_INSTALLER.
+ */
+ if (!hw)
+ return;
+
+ mac = plfxlc_hw_mac(hw);
+ usb = &mac->chip.usb;
+
+ del_timer_sync(&usb->tx.tx_retry_timer);
+ del_timer_sync(&usb->sta_queue_cleanup);
+
+ ieee80211_unregister_hw(hw);
+
+ plfxlc_chip_disable_rxtx(&mac->chip);
+
+ /* If the disconnect has been caused by a removal of the
+ * driver module, the reset allows reloading of the driver. If the
+ * reset will not be executed here, the upload of the firmware in the
+ * probe function caused by the reloading of the driver will fail.
+ */
+ usb_reset_device(interface_to_usbdev(intf));
+
+ plfxlc_mac_release(mac);
+ ieee80211_free_hw(hw);
+}
+
+static void plfxlc_usb_resume(struct plfxlc_usb *usb)
+{
+ struct plfxlc_mac *mac = plfxlc_usb_to_mac(usb);
+ int r;
+
+ r = plfxlc_op_start(plfxlc_usb_to_hw(usb));
+ if (r < 0) {
+ dev_warn(plfxlc_usb_dev(usb),
+ "Device resume failed (%d)\n", r);
+
+ if (usb->was_running)
+ set_bit(PURELIFI_DEVICE_RUNNING, &mac->flags);
+
+ usb_queue_reset_device(usb->intf);
+ return;
+ }
+
+ if (mac->type != NL80211_IFTYPE_UNSPECIFIED) {
+ r = plfxlc_restore_settings(mac);
+ if (r < 0) {
+ dev_dbg(plfxlc_usb_dev(usb),
+ "Restore failed (%d)\n", r);
+ return;
+ }
+ }
+}
+
+static void plfxlc_usb_stop(struct plfxlc_usb *usb)
+{
+ plfxlc_op_stop(plfxlc_usb_to_hw(usb));
+ plfxlc_usb_disable_tx(usb);
+ plfxlc_usb_disable_rx(usb);
+
+ usb->initialized = false;
+}
+
+static int pre_reset(struct usb_interface *intf)
+{
+ struct ieee80211_hw *hw = usb_get_intfdata(intf);
+ struct plfxlc_mac *mac;
+ struct plfxlc_usb *usb;
+
+ if (!hw || intf->condition != USB_INTERFACE_BOUND)
+ return 0;
+
+ mac = plfxlc_hw_mac(hw);
+ usb = &mac->chip.usb;
+
+ usb->was_running = test_bit(PURELIFI_DEVICE_RUNNING, &mac->flags);
+
+ plfxlc_usb_stop(usb);
+
+ return 0;
+}
+
+static int post_reset(struct usb_interface *intf)
+{
+ struct ieee80211_hw *hw = usb_get_intfdata(intf);
+ struct plfxlc_mac *mac;
+ struct plfxlc_usb *usb;
+
+ if (!hw || intf->condition != USB_INTERFACE_BOUND)
+ return 0;
+
+ mac = plfxlc_hw_mac(hw);
+ usb = &mac->chip.usb;
+
+ if (usb->was_running)
+ plfxlc_usb_resume(usb);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static struct plfxlc_usb *get_plfxlc_usb(struct usb_interface *intf)
+{
+ struct ieee80211_hw *hw = plfxlc_intf_to_hw(intf);
+ struct plfxlc_mac *mac;
+
+ /* Either something really bad happened, or
+ * we're just dealing with a DEVICE_INSTALLER.
+ */
+ if (!hw)
+ return NULL;
+
+ mac = plfxlc_hw_mac(hw);
+ return &mac->chip.usb;
+}
+
+static int suspend(struct usb_interface *interface,
+ pm_message_t message)
+{
+ struct plfxlc_usb *pl = get_plfxlc_usb(interface);
+ struct plfxlc_mac *mac = plfxlc_usb_to_mac(pl);
+
+ if (!pl || !plfxlc_usb_dev(pl))
+ return -ENODEV;
+ if (pl->initialized == 0)
+ return 0;
+ pl->was_running = test_bit(PURELIFI_DEVICE_RUNNING, &mac->flags);
+ plfxlc_usb_stop(pl);
+ return 0;
+}
+
+static int resume(struct usb_interface *interface)
+{
+ struct plfxlc_usb *pl = get_plfxlc_usb(interface);
+
+ if (!pl || !plfxlc_usb_dev(pl))
+ return -ENODEV;
+ if (pl->was_running)
+ plfxlc_usb_resume(pl);
+ return 0;
+}
+
+#endif
+
+static struct usb_driver driver = {
+ .name = KBUILD_MODNAME,
+ .id_table = usb_ids,
+ .probe = probe,
+ .disconnect = disconnect,
+ .pre_reset = pre_reset,
+ .post_reset = post_reset,
+#ifdef CONFIG_PM
+ .suspend = suspend,
+ .resume = resume,
+#endif
+ .disable_hub_initiated_lpm = 1,
+};
+
+static int __init usb_init(void)
+{
+ int r;
+
+ r = usb_register(&driver);
+ if (r) {
+ pr_err("%s usb_register() failed %d\n", driver.name, r);
+ return r;
+ }
+
+ pr_debug("Driver initialized :%s\n", driver.name);
+ return 0;
+}
+
+static void __exit usb_exit(void)
+{
+ usb_deregister(&driver);
+ pr_debug("%s %s\n", driver.name, __func__);
+}
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("USB driver for pureLiFi devices");
+MODULE_AUTHOR("pureLiFi");
+MODULE_VERSION("1.0");
+MODULE_FIRMWARE("plfxlc/lifi-x.bin");
+MODULE_DEVICE_TABLE(usb, usb_ids);
+
+module_init(usb_init);
+module_exit(usb_exit);
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2021 pureLiFi
+ */
+
+#ifndef PLFXLC_USB_H
+#define PLFXLC_USB_H
+
+#include <linux/completion.h>
+#include <linux/netdevice.h>
+#include <linux/spinlock.h>
+#include <linux/skbuff.h>
+#include <linux/usb.h>
+
+#include "intf.h"
+
+#define USB_BULK_MSG_TIMEOUT_MS 2000
+
+#define PURELIFI_X_VENDOR_ID_0 0x16C1
+#define PURELIFI_X_PRODUCT_ID_0 0x1CDE
+#define PURELIFI_XC_VENDOR_ID_0 0x2EF5
+#define PURELIFI_XC_PRODUCT_ID_0 0x0008
+#define PURELIFI_XL_VENDOR_ID_0 0x2EF5
+#define PURELIFI_XL_PRODUCT_ID_0 0x000A /* Station */
+
+#define PLF_FPGA_STATUS_LEN 2
+#define PLF_FPGA_STATE_LEN 9
+#define PLF_BULK_TLEN 16384
+#define PLF_FPGA_MG 6 /* Magic check */
+#define PLF_XL_BUF_LEN 64
+#define PLF_MSG_STATUS_OFFSET 7
+
+#define PLF_USB_TIMEOUT 1000
+#define PLF_MSLEEP_TIME 200
+
+#define PURELIFI_URB_RETRY_MAX 5
+
+#define plfxlc_usb_dev(usb) (&(usb)->intf->dev)
+
+/* Tx retry backoff timer (in milliseconds) */
+#define TX_RETRY_BACKOFF_MS 10
+#define STA_QUEUE_CLEANUP_MS 5000
+
+/* Tx retry backoff timer (in jiffies) */
+#define TX_RETRY_BACKOFF_JIFF ((TX_RETRY_BACKOFF_MS * HZ) / 1000)
+#define STA_QUEUE_CLEANUP_JIFF ((STA_QUEUE_CLEANUP_MS * HZ) / 1000)
+
+/* Ensures that MAX_TRANSFER_SIZE is even. */
+#define MAX_TRANSFER_SIZE (USB_MAX_TRANSFER_SIZE & ~1)
+#define plfxlc_urb_dev(urb) (&(urb)->dev->dev)
+
+#define STATION_FIFO_ALMOST_FULL_MESSAGE 0
+#define STATION_FIFO_ALMOST_FULL_NOT_MESSAGE 1
+#define STATION_CONNECT_MESSAGE 2
+#define STATION_DISCONNECT_MESSAGE 3
+
+int plfxlc_usb_wreq(struct usb_interface *ez_usb, void *buffer, int buffer_len,
+ enum plf_usb_req_enum usb_req_id);
+void plfxlc_tx_urb_complete(struct urb *urb);
+
+enum {
+ USB_MAX_RX_SIZE = 4800,
+ USB_MAX_EP_INT_BUFFER = 64,
+};
+
+struct plfxlc_usb_interrupt {
+ spinlock_t lock; /* spin lock for usb interrupt buffer */
+ struct urb *urb;
+ void *buffer;
+ int interval;
+};
+
+#define RX_URBS_COUNT 5
+
+struct plfxlc_usb_rx {
+ spinlock_t lock; /* spin lock for rx urb */
+ struct mutex setup_mutex; /* mutex lockt for rx urb */
+ u8 fragment[2 * USB_MAX_RX_SIZE];
+ unsigned int fragment_length;
+ unsigned int usb_packet_size;
+ struct urb **urbs;
+ int urbs_count;
+};
+
+struct plf_station {
+ /* 7...3 | 2 | 1 | 0 |
+ * Reserved | Heartbeat | FIFO full | Connected |
+ */
+ unsigned char flag;
+ unsigned char mac[ETH_ALEN];
+ struct sk_buff_head data_list;
+};
+
+struct plfxlc_firmware_file {
+ u32 total_files;
+ u32 total_size;
+ u32 size;
+ u32 start_addr;
+ u32 control_packets;
+} __packed;
+
+#define STATION_CONNECTED_FLAG 0x1
+#define STATION_FIFO_FULL_FLAG 0x2
+#define STATION_HEARTBEAT_FLAG 0x4
+#define STATION_ACTIVE_FLAG 0xFD
+
+#define PURELIFI_SERIAL_LEN 256
+#define STA_BROADCAST_INDEX (AP_USER_LIMIT)
+#define MAX_STA_NUM (AP_USER_LIMIT + 1)
+
+struct plfxlc_usb_tx {
+ unsigned long enabled;
+ spinlock_t lock; /* spinlock for USB tx */
+ u8 mac_fifo_full;
+ struct sk_buff_head submitted_skbs;
+ struct usb_anchor submitted;
+ int submitted_urbs;
+ bool stopped;
+ struct timer_list tx_retry_timer;
+ struct plf_station station[MAX_STA_NUM];
+};
+
+/* Contains the usb parts. The structure doesn't require a lock because intf
+ * will not be changed after initialization.
+ */
+struct plfxlc_usb {
+ struct timer_list sta_queue_cleanup;
+ struct plfxlc_usb_rx rx;
+ struct plfxlc_usb_tx tx;
+ struct usb_interface *intf;
+ struct usb_interface *ez_usb;
+ u8 req_buf[64]; /* plfxlc_usb_iowrite16v needs 62 bytes */
+ u8 sidx; /* store last served */
+ bool rx_usb_enabled;
+ bool initialized;
+ bool was_running;
+ bool link_up;
+};
+
+enum endpoints {
+ EP_DATA_IN = 2,
+ EP_DATA_OUT = 8,
+};
+
+enum devicetype {
+ DEVICE_LIFI_X = 0,
+ DEVICE_LIFI_XC = 1,
+ DEVICE_LIFI_XL = 1,
+};
+
+enum {
+ PLF_BIT_ENABLED = 1,
+ PLF_BIT_MAX = 2,
+};
+
+int plfxlc_usb_wreq_async(struct plfxlc_usb *usb, const u8 *buffer,
+ int buffer_len, enum plf_usb_req_enum usb_req_id,
+ usb_complete_t complete_fn, void *context);
+
+static inline struct usb_device *
+plfxlc_usb_to_usbdev(struct plfxlc_usb *usb)
+{
+ return interface_to_usbdev(usb->intf);
+}
+
+static inline struct ieee80211_hw *
+plfxlc_intf_to_hw(struct usb_interface *intf)
+{
+ return usb_get_intfdata(intf);
+}
+
+static inline struct ieee80211_hw *
+plfxlc_usb_to_hw(struct plfxlc_usb *usb)
+{
+ return plfxlc_intf_to_hw(usb->intf);
+}
+
+void plfxlc_usb_init(struct plfxlc_usb *usb, struct ieee80211_hw *hw,
+ struct usb_interface *intf);
+void plfxlc_send_packet_from_data_queue(struct plfxlc_usb *usb);
+void plfxlc_usb_release(struct plfxlc_usb *usb);
+void plfxlc_usb_disable_rx(struct plfxlc_usb *usb);
+void plfxlc_usb_enable_tx(struct plfxlc_usb *usb);
+void plfxlc_usb_disable_tx(struct plfxlc_usb *usb);
+int plfxlc_usb_tx(struct plfxlc_usb *usb, struct sk_buff *skb);
+int plfxlc_usb_enable_rx(struct plfxlc_usb *usb);
+int plfxlc_usb_init_hw(struct plfxlc_usb *usb);
+const char *plfxlc_speed(enum usb_device_speed speed);
+
+/* Firmware declarations */
+int plfxlc_download_xl_firmware(struct usb_interface *intf);
+int plfxlc_download_fpga(struct usb_interface *intf);
+
+int plfxlc_upload_mac_and_serial(struct usb_interface *intf,
+ unsigned char *hw_address,
+ unsigned char *serial_number);
+
+#endif /* PLFXLC_USB_H */
projects / platform / kernel / linux-starfive.git / commitdiff