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M7350/kernel/drivers/net/wireless/libertas/if_usb.c
T f75098198c M7350v5_en_gpl
2024-09-09 08:57:42 +00:00

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/*
* This file contains functions used in USB interface module.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/firmware.h>
#include <linux/netdevice.h>
#include <linux/slab.h>
#include <linux/usb.h>
#include <linux/olpc-ec.h>
#ifdef CONFIG_OLPC
#include <asm/olpc.h>
#endif
#define DRV_NAME "usb8xxx"
#include "host.h"
#include "decl.h"
#include "defs.h"
#include "dev.h"
#include "cmd.h"
#include "if_usb.h"
#define INSANEDEBUG 0
#define lbs_deb_usb2(...) do { if (INSANEDEBUG) lbs_deb_usbd(__VA_ARGS__); } while (0)
#define MESSAGE_HEADER_LEN 4
MODULE_FIRMWARE("libertas/usb8388_v9.bin");
MODULE_FIRMWARE("libertas/usb8388_v5.bin");
MODULE_FIRMWARE("libertas/usb8388.bin");
MODULE_FIRMWARE("libertas/usb8682.bin");
MODULE_FIRMWARE("usb8388.bin");
enum {
MODEL_UNKNOWN = 0x0,
MODEL_8388 = 0x1,
MODEL_8682 = 0x2
};
/* table of firmware file names */
static const struct lbs_fw_table fw_table[] = {
{ MODEL_8388, "libertas/usb8388_olpc.bin", NULL },
{ MODEL_8388, "libertas/usb8388_v9.bin", NULL },
{ MODEL_8388, "libertas/usb8388_v5.bin", NULL },
{ MODEL_8388, "libertas/usb8388.bin", NULL },
{ MODEL_8388, "usb8388.bin", NULL },
{ MODEL_8682, "libertas/usb8682.bin", NULL }
};
static struct usb_device_id if_usb_table[] = {
/* Enter the device signature inside */
{ USB_DEVICE(0x1286, 0x2001), .driver_info = MODEL_8388 },
{ USB_DEVICE(0x05a3, 0x8388), .driver_info = MODEL_8388 },
{} /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, if_usb_table);
static void if_usb_receive(struct urb *urb);
static void if_usb_receive_fwload(struct urb *urb);
static void if_usb_prog_firmware(struct lbs_private *priv, int ret,
const struct firmware *fw,
const struct firmware *unused);
static int if_usb_host_to_card(struct lbs_private *priv, uint8_t type,
uint8_t *payload, uint16_t nb);
static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload,
uint16_t nb);
static void if_usb_free(struct if_usb_card *cardp);
static int if_usb_submit_rx_urb(struct if_usb_card *cardp);
static int if_usb_reset_device(struct if_usb_card *cardp);
/**
* if_usb_write_bulk_callback - callback function to handle the status
* of the URB
* @urb: pointer to &urb structure
* returns: N/A
*/
static void if_usb_write_bulk_callback(struct urb *urb)
{
struct if_usb_card *cardp = (struct if_usb_card *) urb->context;
/* handle the transmission complete validations */
if (urb->status == 0) {
struct lbs_private *priv = cardp->priv;
lbs_deb_usb2(&urb->dev->dev, "URB status is successful\n");
lbs_deb_usb2(&urb->dev->dev, "Actual length transmitted %d\n",
urb->actual_length);
/* Boot commands such as UPDATE_FW and UPDATE_BOOT2 are not
* passed up to the lbs level.
*/
if (priv && priv->dnld_sent != DNLD_BOOTCMD_SENT)
lbs_host_to_card_done(priv);
} else {
/* print the failure status number for debug */
pr_info("URB in failure status: %d\n", urb->status);
}
}
/**
* if_usb_free - free tx/rx urb, skb and rx buffer
* @cardp: pointer to &if_usb_card
* returns: N/A
*/
static void if_usb_free(struct if_usb_card *cardp)
{
lbs_deb_enter(LBS_DEB_USB);
/* Unlink tx & rx urb */
usb_kill_urb(cardp->tx_urb);
usb_kill_urb(cardp->rx_urb);
usb_free_urb(cardp->tx_urb);
cardp->tx_urb = NULL;
usb_free_urb(cardp->rx_urb);
cardp->rx_urb = NULL;
kfree(cardp->ep_out_buf);
cardp->ep_out_buf = NULL;
lbs_deb_leave(LBS_DEB_USB);
}
static void if_usb_setup_firmware(struct lbs_private *priv)
{
struct if_usb_card *cardp = priv->card;
struct cmd_ds_set_boot2_ver b2_cmd;
struct cmd_ds_802_11_fw_wake_method wake_method;
b2_cmd.hdr.size = cpu_to_le16(sizeof(b2_cmd));
b2_cmd.action = 0;
b2_cmd.version = cardp->boot2_version;
if (lbs_cmd_with_response(priv, CMD_SET_BOOT2_VER, &b2_cmd))
lbs_deb_usb("Setting boot2 version failed\n");
priv->wol_gpio = 2; /* Wake via GPIO2... */
priv->wol_gap = 20; /* ... after 20ms */
lbs_host_sleep_cfg(priv, EHS_WAKE_ON_UNICAST_DATA,
(struct wol_config *) NULL);
wake_method.hdr.size = cpu_to_le16(sizeof(wake_method));
wake_method.action = cpu_to_le16(CMD_ACT_GET);
if (lbs_cmd_with_response(priv, CMD_802_11_FW_WAKE_METHOD, &wake_method)) {
netdev_info(priv->dev, "Firmware does not seem to support PS mode\n");
priv->fwcapinfo &= ~FW_CAPINFO_PS;
} else {
if (le16_to_cpu(wake_method.method) == CMD_WAKE_METHOD_COMMAND_INT) {
lbs_deb_usb("Firmware seems to support PS with wake-via-command\n");
} else {
/* The versions which boot up this way don't seem to
work even if we set it to the command interrupt */
priv->fwcapinfo &= ~FW_CAPINFO_PS;
netdev_info(priv->dev,
"Firmware doesn't wake via command interrupt; disabling PS mode\n");
}
}
}
static void if_usb_fw_timeo(unsigned long priv)
{
struct if_usb_card *cardp = (void *)priv;
if (cardp->fwdnldover) {
lbs_deb_usb("Download complete, no event. Assuming success\n");
} else {
pr_err("Download timed out\n");
cardp->surprise_removed = 1;
}
wake_up(&cardp->fw_wq);
}
#ifdef CONFIG_OLPC
static void if_usb_reset_olpc_card(struct lbs_private *priv)
{
printk(KERN_CRIT "Resetting OLPC wireless via EC...\n");
olpc_ec_cmd(0x25, NULL, 0, NULL, 0);
}
#endif
/**
* if_usb_probe - sets the configuration values
* @intf: &usb_interface pointer
* @id: pointer to usb_device_id
* returns: 0 on success, error code on failure
*/
static int if_usb_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_device *udev;
struct usb_host_interface *iface_desc;
struct usb_endpoint_descriptor *endpoint;
struct lbs_private *priv;
struct if_usb_card *cardp;
int r = -ENOMEM;
int i;
udev = interface_to_usbdev(intf);
cardp = kzalloc(sizeof(struct if_usb_card), GFP_KERNEL);
if (!cardp)
goto error;
setup_timer(&cardp->fw_timeout, if_usb_fw_timeo, (unsigned long)cardp);
init_waitqueue_head(&cardp->fw_wq);
cardp->udev = udev;
cardp->model = (uint32_t) id->driver_info;
iface_desc = intf->cur_altsetting;
lbs_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
" bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
le16_to_cpu(udev->descriptor.bcdUSB),
udev->descriptor.bDeviceClass,
udev->descriptor.bDeviceSubClass,
udev->descriptor.bDeviceProtocol);
for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
endpoint = &iface_desc->endpoint[i].desc;
if (usb_endpoint_is_bulk_in(endpoint)) {
cardp->ep_in_size = le16_to_cpu(endpoint->wMaxPacketSize);
cardp->ep_in = usb_endpoint_num(endpoint);
lbs_deb_usbd(&udev->dev, "in_endpoint = %d\n", cardp->ep_in);
lbs_deb_usbd(&udev->dev, "Bulk in size is %d\n", cardp->ep_in_size);
} else if (usb_endpoint_is_bulk_out(endpoint)) {
cardp->ep_out_size = le16_to_cpu(endpoint->wMaxPacketSize);
cardp->ep_out = usb_endpoint_num(endpoint);
lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n", cardp->ep_out);
lbs_deb_usbd(&udev->dev, "Bulk out size is %d\n", cardp->ep_out_size);
}
}
if (!cardp->ep_out_size || !cardp->ep_in_size) {
lbs_deb_usbd(&udev->dev, "Endpoints not found\n");
goto dealloc;
}
if (!(cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
lbs_deb_usbd(&udev->dev, "Rx URB allocation failed\n");
goto dealloc;
}
if (!(cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
lbs_deb_usbd(&udev->dev, "Tx URB allocation failed\n");
goto dealloc;
}
cardp->ep_out_buf = kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE, GFP_KERNEL);
if (!cardp->ep_out_buf) {
lbs_deb_usbd(&udev->dev, "Could not allocate buffer\n");
goto dealloc;
}
if (!(priv = lbs_add_card(cardp, &intf->dev)))
goto err_add_card;
cardp->priv = priv;
priv->hw_host_to_card = if_usb_host_to_card;
priv->enter_deep_sleep = NULL;
priv->exit_deep_sleep = NULL;
priv->reset_deep_sleep_wakeup = NULL;
#ifdef CONFIG_OLPC
if (machine_is_olpc())
priv->reset_card = if_usb_reset_olpc_card;
#endif
cardp->boot2_version = udev->descriptor.bcdDevice;
usb_get_dev(udev);
usb_set_intfdata(intf, cardp);
r = lbs_get_firmware_async(priv, &udev->dev, cardp->model,
fw_table, if_usb_prog_firmware);
if (r)
goto err_get_fw;
return 0;
err_get_fw:
lbs_remove_card(priv);
err_add_card:
if_usb_reset_device(cardp);
dealloc:
if_usb_free(cardp);
error:
return r;
}
/**
* if_usb_disconnect - free resource and cleanup
* @intf: USB interface structure
* returns: N/A
*/
static void if_usb_disconnect(struct usb_interface *intf)
{
struct if_usb_card *cardp = usb_get_intfdata(intf);
struct lbs_private *priv = cardp->priv;
lbs_deb_enter(LBS_DEB_MAIN);
cardp->surprise_removed = 1;
if (priv) {
lbs_stop_card(priv);
lbs_remove_card(priv);
}
/* Unlink and free urb */
if_usb_free(cardp);
usb_set_intfdata(intf, NULL);
usb_put_dev(interface_to_usbdev(intf));
lbs_deb_leave(LBS_DEB_MAIN);
}
/**
* if_usb_send_fw_pkt - download FW
* @cardp: pointer to &struct if_usb_card
* returns: 0
*/
static int if_usb_send_fw_pkt(struct if_usb_card *cardp)
{
struct fwdata *fwdata = cardp->ep_out_buf;
const uint8_t *firmware = cardp->fw->data;
/* If we got a CRC failure on the last block, back
up and retry it */
if (!cardp->CRC_OK) {
cardp->totalbytes = cardp->fwlastblksent;
cardp->fwseqnum--;
}
lbs_deb_usb2(&cardp->udev->dev, "totalbytes = %d\n",
cardp->totalbytes);
/* struct fwdata (which we sent to the card) has an
extra __le32 field in between the header and the data,
which is not in the struct fwheader in the actual
firmware binary. Insert the seqnum in the middle... */
memcpy(&fwdata->hdr, &firmware[cardp->totalbytes],
sizeof(struct fwheader));
cardp->fwlastblksent = cardp->totalbytes;
cardp->totalbytes += sizeof(struct fwheader);
memcpy(fwdata->data, &firmware[cardp->totalbytes],
le32_to_cpu(fwdata->hdr.datalength));
lbs_deb_usb2(&cardp->udev->dev, "Data length = %d\n",
le32_to_cpu(fwdata->hdr.datalength));
fwdata->seqnum = cpu_to_le32(++cardp->fwseqnum);
cardp->totalbytes += le32_to_cpu(fwdata->hdr.datalength);
usb_tx_block(cardp, cardp->ep_out_buf, sizeof(struct fwdata) +
le32_to_cpu(fwdata->hdr.datalength));
if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_DATA_TO_RECV)) {
lbs_deb_usb2(&cardp->udev->dev, "There are data to follow\n");
lbs_deb_usb2(&cardp->udev->dev, "seqnum = %d totalbytes = %d\n",
cardp->fwseqnum, cardp->totalbytes);
} else if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_LAST_BLOCK)) {
lbs_deb_usb2(&cardp->udev->dev, "Host has finished FW downloading\n");
lbs_deb_usb2(&cardp->udev->dev, "Donwloading FW JUMP BLOCK\n");
cardp->fwfinalblk = 1;
}
lbs_deb_usb2(&cardp->udev->dev, "Firmware download done; size %d\n",
cardp->totalbytes);
return 0;
}
static int if_usb_reset_device(struct if_usb_card *cardp)
{
struct cmd_header *cmd = cardp->ep_out_buf + 4;
int ret;
lbs_deb_enter(LBS_DEB_USB);
*(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST);
cmd->command = cpu_to_le16(CMD_802_11_RESET);
cmd->size = cpu_to_le16(sizeof(cmd));
cmd->result = cpu_to_le16(0);
cmd->seqnum = cpu_to_le16(0x5a5a);
usb_tx_block(cardp, cardp->ep_out_buf, 4 + sizeof(struct cmd_header));
msleep(100);
ret = usb_reset_device(cardp->udev);
msleep(100);
#ifdef CONFIG_OLPC
if (ret && machine_is_olpc())
if_usb_reset_olpc_card(NULL);
#endif
lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
return ret;
}
/**
* usb_tx_block - transfer the data to the device
* @cardp: pointer to &struct if_usb_card
* @payload: pointer to payload data
* @nb: data length
* returns: 0 for success or negative error code
*/
static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload, uint16_t nb)
{
int ret;
/* check if device is removed */
if (cardp->surprise_removed) {
lbs_deb_usbd(&cardp->udev->dev, "Device removed\n");
ret = -ENODEV;
goto tx_ret;
}
usb_fill_bulk_urb(cardp->tx_urb, cardp->udev,
usb_sndbulkpipe(cardp->udev,
cardp->ep_out),
payload, nb, if_usb_write_bulk_callback, cardp);
cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET;
if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed: %d\n", ret);
} else {
lbs_deb_usb2(&cardp->udev->dev, "usb_submit_urb success\n");
ret = 0;
}
tx_ret:
return ret;
}
static int __if_usb_submit_rx_urb(struct if_usb_card *cardp,
void (*callbackfn)(struct urb *urb))
{
struct sk_buff *skb;
int ret = -1;
if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) {
pr_err("No free skb\n");
goto rx_ret;
}
cardp->rx_skb = skb;
/* Fill the receive configuration URB and initialise the Rx call back */
usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
usb_rcvbulkpipe(cardp->udev, cardp->ep_in),
skb->data + IPFIELD_ALIGN_OFFSET,
MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
cardp);
cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
lbs_deb_usb2(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb);
if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed: %d\n", ret);
kfree_skb(skb);
cardp->rx_skb = NULL;
ret = -1;
} else {
lbs_deb_usb2(&cardp->udev->dev, "Submit Rx URB success\n");
ret = 0;
}
rx_ret:
return ret;
}
static int if_usb_submit_rx_urb_fwload(struct if_usb_card *cardp)
{
return __if_usb_submit_rx_urb(cardp, &if_usb_receive_fwload);
}
static int if_usb_submit_rx_urb(struct if_usb_card *cardp)
{
return __if_usb_submit_rx_urb(cardp, &if_usb_receive);
}
static void if_usb_receive_fwload(struct urb *urb)
{
struct if_usb_card *cardp = urb->context;
struct sk_buff *skb = cardp->rx_skb;
struct fwsyncheader *syncfwheader;
struct bootcmdresp bootcmdresp;
if (urb->status) {
lbs_deb_usbd(&cardp->udev->dev,
"URB status is failed during fw load\n");
kfree_skb(skb);
return;
}
if (cardp->fwdnldover) {
__le32 *tmp = (__le32 *)(skb->data + IPFIELD_ALIGN_OFFSET);
if (tmp[0] == cpu_to_le32(CMD_TYPE_INDICATION) &&
tmp[1] == cpu_to_le32(MACREG_INT_CODE_FIRMWARE_READY)) {
pr_info("Firmware ready event received\n");
wake_up(&cardp->fw_wq);
} else {
lbs_deb_usb("Waiting for confirmation; got %x %x\n",
le32_to_cpu(tmp[0]), le32_to_cpu(tmp[1]));
if_usb_submit_rx_urb_fwload(cardp);
}
kfree_skb(skb);
return;
}
if (cardp->bootcmdresp <= 0) {
memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET,
sizeof(bootcmdresp));
if (le16_to_cpu(cardp->udev->descriptor.bcdDevice) < 0x3106) {
kfree_skb(skb);
if_usb_submit_rx_urb_fwload(cardp);
cardp->bootcmdresp = BOOT_CMD_RESP_OK;
lbs_deb_usbd(&cardp->udev->dev,
"Received valid boot command response\n");
return;
}
if (bootcmdresp.magic != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) {
if (bootcmdresp.magic == cpu_to_le32(CMD_TYPE_REQUEST) ||
bootcmdresp.magic == cpu_to_le32(CMD_TYPE_DATA) ||
bootcmdresp.magic == cpu_to_le32(CMD_TYPE_INDICATION)) {
if (!cardp->bootcmdresp)
pr_info("Firmware already seems alive; resetting\n");
cardp->bootcmdresp = -1;
} else {
pr_info("boot cmd response wrong magic number (0x%x)\n",
le32_to_cpu(bootcmdresp.magic));
}
} else if ((bootcmdresp.cmd != BOOT_CMD_FW_BY_USB) &&
(bootcmdresp.cmd != BOOT_CMD_UPDATE_FW) &&
(bootcmdresp.cmd != BOOT_CMD_UPDATE_BOOT2)) {
pr_info("boot cmd response cmd_tag error (%d)\n",
bootcmdresp.cmd);
} else if (bootcmdresp.result != BOOT_CMD_RESP_OK) {
pr_info("boot cmd response result error (%d)\n",
bootcmdresp.result);
} else {
cardp->bootcmdresp = 1;
lbs_deb_usbd(&cardp->udev->dev,
"Received valid boot command response\n");
}
kfree_skb(skb);
if_usb_submit_rx_urb_fwload(cardp);
return;
}
syncfwheader = kmemdup(skb->data + IPFIELD_ALIGN_OFFSET,
sizeof(struct fwsyncheader), GFP_ATOMIC);
if (!syncfwheader) {
lbs_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
kfree_skb(skb);
return;
}
if (!syncfwheader->cmd) {
lbs_deb_usb2(&cardp->udev->dev, "FW received Blk with correct CRC\n");
lbs_deb_usb2(&cardp->udev->dev, "FW received Blk seqnum = %d\n",
le32_to_cpu(syncfwheader->seqnum));
cardp->CRC_OK = 1;
} else {
lbs_deb_usbd(&cardp->udev->dev, "FW received Blk with CRC error\n");
cardp->CRC_OK = 0;
}
kfree_skb(skb);
/* Give device 5s to either write firmware to its RAM or eeprom */
mod_timer(&cardp->fw_timeout, jiffies + (HZ*5));
if (cardp->fwfinalblk) {
cardp->fwdnldover = 1;
goto exit;
}
if_usb_send_fw_pkt(cardp);
exit:
if_usb_submit_rx_urb_fwload(cardp);
kfree(syncfwheader);
}
#define MRVDRV_MIN_PKT_LEN 30
static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
struct if_usb_card *cardp,
struct lbs_private *priv)
{
if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + MESSAGE_HEADER_LEN
|| recvlength < MRVDRV_MIN_PKT_LEN) {
lbs_deb_usbd(&cardp->udev->dev, "Packet length is Invalid\n");
kfree_skb(skb);
return;
}
skb_reserve(skb, IPFIELD_ALIGN_OFFSET);
skb_put(skb, recvlength);
skb_pull(skb, MESSAGE_HEADER_LEN);
lbs_process_rxed_packet(priv, skb);
}
static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff,
struct sk_buff *skb,
struct if_usb_card *cardp,
struct lbs_private *priv)
{
u8 i;
if (recvlength > LBS_CMD_BUFFER_SIZE) {
lbs_deb_usbd(&cardp->udev->dev,
"The receive buffer is too large\n");
kfree_skb(skb);
return;
}
BUG_ON(!in_interrupt());
spin_lock(&priv->driver_lock);
i = (priv->resp_idx == 0) ? 1 : 0;
BUG_ON(priv->resp_len[i]);
priv->resp_len[i] = (recvlength - MESSAGE_HEADER_LEN);
memcpy(priv->resp_buf[i], recvbuff + MESSAGE_HEADER_LEN,
priv->resp_len[i]);
kfree_skb(skb);
lbs_notify_command_response(priv, i);
spin_unlock(&priv->driver_lock);
lbs_deb_usbd(&cardp->udev->dev,
"Wake up main thread to handle cmd response\n");
}
/**
* if_usb_receive - read the packet into the upload buffer,
* wake up the main thread and initialise the Rx callack
*
* @urb: pointer to &struct urb
* returns: N/A
*/
static void if_usb_receive(struct urb *urb)
{
struct if_usb_card *cardp = urb->context;
struct sk_buff *skb = cardp->rx_skb;
struct lbs_private *priv = cardp->priv;
int recvlength = urb->actual_length;
uint8_t *recvbuff = NULL;
uint32_t recvtype = 0;
__le32 *pkt = (__le32 *)(skb->data + IPFIELD_ALIGN_OFFSET);
uint32_t event;
lbs_deb_enter(LBS_DEB_USB);
if (recvlength) {
if (urb->status) {
lbs_deb_usbd(&cardp->udev->dev, "RX URB failed: %d\n",
urb->status);
kfree_skb(skb);
goto setup_for_next;
}
recvbuff = skb->data + IPFIELD_ALIGN_OFFSET;
recvtype = le32_to_cpu(pkt[0]);
lbs_deb_usbd(&cardp->udev->dev,
"Recv length = 0x%x, Recv type = 0x%X\n",
recvlength, recvtype);
} else if (urb->status) {
kfree_skb(skb);
goto rx_exit;
}
switch (recvtype) {
case CMD_TYPE_DATA:
process_cmdtypedata(recvlength, skb, cardp, priv);
break;
case CMD_TYPE_REQUEST:
process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
break;
case CMD_TYPE_INDICATION:
/* Event handling */
event = le32_to_cpu(pkt[1]);
lbs_deb_usbd(&cardp->udev->dev, "**EVENT** 0x%X\n", event);
kfree_skb(skb);
/* Icky undocumented magic special case */
if (event & 0xffff0000) {
u32 trycount = (event & 0xffff0000) >> 16;
lbs_send_tx_feedback(priv, trycount);
} else
lbs_queue_event(priv, event & 0xFF);
break;
default:
lbs_deb_usbd(&cardp->udev->dev, "Unknown command type 0x%X\n",
recvtype);
kfree_skb(skb);
break;
}
setup_for_next:
if_usb_submit_rx_urb(cardp);
rx_exit:
lbs_deb_leave(LBS_DEB_USB);
}
/**
* if_usb_host_to_card - downloads data to FW
* @priv: pointer to &struct lbs_private structure
* @type: type of data
* @payload: pointer to data buffer
* @nb: number of bytes
* returns: 0 for success or negative error code
*/
static int if_usb_host_to_card(struct lbs_private *priv, uint8_t type,
uint8_t *payload, uint16_t nb)
{
struct if_usb_card *cardp = priv->card;
lbs_deb_usbd(&cardp->udev->dev,"*** type = %u\n", type);
lbs_deb_usbd(&cardp->udev->dev,"size after = %d\n", nb);
if (type == MVMS_CMD) {
*(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST);
priv->dnld_sent = DNLD_CMD_SENT;
} else {
*(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_DATA);
priv->dnld_sent = DNLD_DATA_SENT;
}
memcpy((cardp->ep_out_buf + MESSAGE_HEADER_LEN), payload, nb);
return usb_tx_block(cardp, cardp->ep_out_buf, nb + MESSAGE_HEADER_LEN);
}
/**
* if_usb_issue_boot_command - issues Boot command to the Boot2 code
* @cardp: pointer to &if_usb_card
* @ivalue: 1:Boot from FW by USB-Download
* 2:Boot from FW in EEPROM
* returns: 0 for success or negative error code
*/
static int if_usb_issue_boot_command(struct if_usb_card *cardp, int ivalue)
{
struct bootcmd *bootcmd = cardp->ep_out_buf;
/* Prepare command */
bootcmd->magic = cpu_to_le32(BOOT_CMD_MAGIC_NUMBER);
bootcmd->cmd = ivalue;
memset(bootcmd->pad, 0, sizeof(bootcmd->pad));
/* Issue command */
usb_tx_block(cardp, cardp->ep_out_buf, sizeof(*bootcmd));
return 0;
}
/**
* check_fwfile_format - check the validity of Boot2/FW image
*
* @data: pointer to image
* @totlen: image length
* returns: 0 (good) or 1 (failure)
*/
static int check_fwfile_format(const uint8_t *data, uint32_t totlen)
{
uint32_t bincmd, exit;
uint32_t blksize, offset, len;
int ret;
ret = 1;
exit = len = 0;
do {
struct fwheader *fwh = (void *)data;
bincmd = le32_to_cpu(fwh->dnldcmd);
blksize = le32_to_cpu(fwh->datalength);
switch (bincmd) {
case FW_HAS_DATA_TO_RECV:
offset = sizeof(struct fwheader) + blksize;
data += offset;
len += offset;
if (len >= totlen)
exit = 1;
break;
case FW_HAS_LAST_BLOCK:
exit = 1;
ret = 0;
break;
default:
exit = 1;
break;
}
} while (!exit);
if (ret)
pr_err("firmware file format check FAIL\n");
else
lbs_deb_fw("firmware file format check PASS\n");
return ret;
}
static void if_usb_prog_firmware(struct lbs_private *priv, int ret,
const struct firmware *fw,
const struct firmware *unused)
{
struct if_usb_card *cardp = priv->card;
int i = 0;
static int reset_count = 10;
lbs_deb_enter(LBS_DEB_USB);
if (ret) {
pr_err("failed to find firmware (%d)\n", ret);
goto done;
}
cardp->fw = fw;
if (check_fwfile_format(cardp->fw->data, cardp->fw->size)) {
ret = -EINVAL;
goto done;
}
/* Cancel any pending usb business */
usb_kill_urb(cardp->rx_urb);
usb_kill_urb(cardp->tx_urb);
cardp->fwlastblksent = 0;
cardp->fwdnldover = 0;
cardp->totalbytes = 0;
cardp->fwfinalblk = 0;
cardp->bootcmdresp = 0;
restart:
if (if_usb_submit_rx_urb_fwload(cardp) < 0) {
lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
ret = -EIO;
goto done;
}
cardp->bootcmdresp = 0;
do {
int j = 0;
i++;
if_usb_issue_boot_command(cardp, BOOT_CMD_FW_BY_USB);
/* wait for command response */
do {
j++;
msleep_interruptible(100);
} while (cardp->bootcmdresp == 0 && j < 10);
} while (cardp->bootcmdresp == 0 && i < 5);
if (cardp->bootcmdresp == BOOT_CMD_RESP_NOT_SUPPORTED) {
/* Return to normal operation */
ret = -EOPNOTSUPP;
usb_kill_urb(cardp->rx_urb);
usb_kill_urb(cardp->tx_urb);
if (if_usb_submit_rx_urb(cardp) < 0)
ret = -EIO;
goto done;
} else if (cardp->bootcmdresp <= 0) {
if (--reset_count >= 0) {
if_usb_reset_device(cardp);
goto restart;
}
ret = -EIO;
goto done;
}
i = 0;
cardp->totalbytes = 0;
cardp->fwlastblksent = 0;
cardp->CRC_OK = 1;
cardp->fwdnldover = 0;
cardp->fwseqnum = -1;
cardp->totalbytes = 0;
cardp->fwfinalblk = 0;
/* Send the first firmware packet... */
if_usb_send_fw_pkt(cardp);
/* ... and wait for the process to complete */
wait_event_interruptible(cardp->fw_wq, cardp->surprise_removed || cardp->fwdnldover);
del_timer_sync(&cardp->fw_timeout);
usb_kill_urb(cardp->rx_urb);
if (!cardp->fwdnldover) {
pr_info("failed to load fw, resetting device!\n");
if (--reset_count >= 0) {
if_usb_reset_device(cardp);
goto restart;
}
pr_info("FW download failure, time = %d ms\n", i * 100);
ret = -EIO;
goto done;
}
cardp->priv->fw_ready = 1;
if_usb_submit_rx_urb(cardp);
if (lbs_start_card(priv))
goto done;
if_usb_setup_firmware(priv);
/*
* EHS_REMOVE_WAKEUP is not supported on all versions of the firmware.
*/
priv->wol_criteria = EHS_REMOVE_WAKEUP;
if (lbs_host_sleep_cfg(priv, priv->wol_criteria, NULL))
priv->ehs_remove_supported = false;
done:
cardp->fw = NULL;
lbs_deb_leave(LBS_DEB_USB);
}
#ifdef CONFIG_PM
static int if_usb_suspend(struct usb_interface *intf, pm_message_t message)
{
struct if_usb_card *cardp = usb_get_intfdata(intf);
struct lbs_private *priv = cardp->priv;
int ret;
lbs_deb_enter(LBS_DEB_USB);
if (priv->psstate != PS_STATE_FULL_POWER) {
ret = -1;
goto out;
}
#ifdef CONFIG_OLPC
if (machine_is_olpc()) {
if (priv->wol_criteria == EHS_REMOVE_WAKEUP)
olpc_ec_wakeup_clear(EC_SCI_SRC_WLAN);
else
olpc_ec_wakeup_set(EC_SCI_SRC_WLAN);
}
#endif
ret = lbs_suspend(priv);
if (ret)
goto out;
/* Unlink tx & rx urb */
usb_kill_urb(cardp->tx_urb);
usb_kill_urb(cardp->rx_urb);
out:
lbs_deb_leave(LBS_DEB_USB);
return ret;
}
static int if_usb_resume(struct usb_interface *intf)
{
struct if_usb_card *cardp = usb_get_intfdata(intf);
struct lbs_private *priv = cardp->priv;
lbs_deb_enter(LBS_DEB_USB);
if_usb_submit_rx_urb(cardp);
lbs_resume(priv);
lbs_deb_leave(LBS_DEB_USB);
return 0;
}
#else
#define if_usb_suspend NULL
#define if_usb_resume NULL
#endif
static struct usb_driver if_usb_driver = {
.name = DRV_NAME,
.probe = if_usb_probe,
.disconnect = if_usb_disconnect,
.id_table = if_usb_table,
.suspend = if_usb_suspend,
.resume = if_usb_resume,
.reset_resume = if_usb_resume,
.disable_hub_initiated_lpm = 1,
};
module_usb_driver(if_usb_driver);
MODULE_DESCRIPTION("8388 USB WLAN Driver");
MODULE_AUTHOR("Marvell International Ltd. and Red Hat, Inc.");
MODULE_LICENSE("GPL");
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