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tegrakernel/kernel/kernel-4.9/drivers/net/wireless/intersil/p54/p54usb.c

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initial commit tegra kernel 32.6.1
2022-02-16 09:13:02 -06:00
/*
* Linux device driver for USB based Prism54
*
* Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
*
* Based on the islsm (softmac prism54) driver, which is:
* Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/usb.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/firmware.h>
#include <linux/etherdevice.h>
#include <linux/delay.h>
#include <linux/crc32.h>
#include <linux/module.h>
#include <net/mac80211.h>
#include "p54.h"
#include "lmac.h"
#include "p54usb.h"
MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
MODULE_DESCRIPTION("Prism54 USB wireless driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("prism54usb");
MODULE_FIRMWARE("isl3886usb");
MODULE_FIRMWARE("isl3887usb");
static struct usb_driver p54u_driver;
/*
* Note:
*
* Always update our wiki's device list (located at:
* http://wireless.kernel.org/en/users/Drivers/p54/devices ),
* whenever you add a new device.
*/
static struct usb_device_id p54u_table[] = {
/* Version 1 devices (pci chip + net2280) */
{USB_DEVICE(0x0411, 0x0050)}, /* Buffalo WLI2-USB2-G54 */
{USB_DEVICE(0x045e, 0x00c2)}, /* Microsoft MN-710 */
{USB_DEVICE(0x0506, 0x0a11)}, /* 3COM 3CRWE254G72 */
{USB_DEVICE(0x0675, 0x0530)}, /* DrayTek Vigor 530 */
{USB_DEVICE(0x06b9, 0x0120)}, /* Thomson SpeedTouch 120g */
{USB_DEVICE(0x0707, 0xee06)}, /* SMC 2862W-G */
{USB_DEVICE(0x07aa, 0x001c)}, /* Corega CG-WLUSB2GT */
{USB_DEVICE(0x083a, 0x4501)}, /* Accton 802.11g WN4501 USB */
{USB_DEVICE(0x083a, 0x4502)}, /* Siemens Gigaset USB Adapter */
{USB_DEVICE(0x083a, 0x5501)}, /* Phillips CPWUA054 */
{USB_DEVICE(0x0846, 0x4200)}, /* Netgear WG121 */
{USB_DEVICE(0x0846, 0x4210)}, /* Netgear WG121 the second ? */
{USB_DEVICE(0x0846, 0x4220)}, /* Netgear WG111 */
{USB_DEVICE(0x09aa, 0x1000)}, /* Spinnaker Proto board */
{USB_DEVICE(0x0bf8, 0x1007)}, /* Fujitsu E-5400 USB */
{USB_DEVICE(0x0cde, 0x0006)}, /* Medion 40900, Roper Europe */
{USB_DEVICE(0x0db0, 0x6826)}, /* MSI UB54G (MS-6826) */
{USB_DEVICE(0x107b, 0x55f2)}, /* Gateway WGU-210 (Gemtek) */
{USB_DEVICE(0x124a, 0x4023)}, /* Shuttle PN15, Airvast WM168g, IOGear GWU513 */
{USB_DEVICE(0x124a, 0x4026)}, /* AirVasT USB wireless device */
{USB_DEVICE(0x1435, 0x0210)}, /* Inventel UR054G */
{USB_DEVICE(0x15a9, 0x0002)}, /* Gemtek WUBI-100GW 802.11g */
{USB_DEVICE(0x1630, 0x0005)}, /* 2Wire 802.11g USB (v1) / Z-Com */
{USB_DEVICE(0x182d, 0x096b)}, /* Sitecom WL-107 */
{USB_DEVICE(0x1915, 0x2234)}, /* Linksys WUSB54G OEM */
{USB_DEVICE(0x1915, 0x2235)}, /* Linksys WUSB54G Portable OEM */
{USB_DEVICE(0x2001, 0x3701)}, /* DLink DWL-G120 Spinnaker */
{USB_DEVICE(0x2001, 0x3703)}, /* DLink DWL-G122 */
{USB_DEVICE(0x2001, 0x3762)}, /* Conceptronic C54U */
{USB_DEVICE(0x5041, 0x2234)}, /* Linksys WUSB54G */
{USB_DEVICE(0x5041, 0x2235)}, /* Linksys WUSB54G Portable */
/* Version 2 devices (3887) */
{USB_DEVICE(0x0471, 0x1230)}, /* Philips CPWUA054/00 */
{USB_DEVICE(0x050d, 0x7050)}, /* Belkin F5D7050 ver 1000 */
{USB_DEVICE(0x0572, 0x2000)}, /* Cohiba Proto board */
{USB_DEVICE(0x0572, 0x2002)}, /* Cohiba Proto board */
{USB_DEVICE(0x06a9, 0x000e)}, /* Westell 802.11g USB (A90-211WG-01) */
{USB_DEVICE(0x06b9, 0x0121)}, /* Thomson SpeedTouch 121g */
{USB_DEVICE(0x0707, 0xee13)}, /* SMC 2862W-G version 2 */
{USB_DEVICE(0x07aa, 0x0020)}, /* Corega WLUSB2GTST USB */
{USB_DEVICE(0x0803, 0x4310)}, /* Zoom 4410a */
{USB_DEVICE(0x083a, 0x4521)}, /* Siemens Gigaset USB Adapter 54 version 2 */
{USB_DEVICE(0x083a, 0x4531)}, /* T-Com Sinus 154 data II */
{USB_DEVICE(0x083a, 0xc501)}, /* Zoom Wireless-G 4410 */
{USB_DEVICE(0x083a, 0xf503)}, /* Accton FD7050E ver 1010ec */
{USB_DEVICE(0x0846, 0x4240)}, /* Netgear WG111 (v2) */
{USB_DEVICE(0x0915, 0x2000)}, /* Cohiba Proto board */
{USB_DEVICE(0x0915, 0x2002)}, /* Cohiba Proto board */
{USB_DEVICE(0x0baf, 0x0118)}, /* U.S. Robotics U5 802.11g Adapter*/
{USB_DEVICE(0x0bf8, 0x1009)}, /* FUJITSU E-5400 USB D1700*/
/* {USB_DEVICE(0x0cde, 0x0006)}, * Medion MD40900 already listed above,
* just noting it here for clarity */
{USB_DEVICE(0x0cde, 0x0008)}, /* Sagem XG703A */
{USB_DEVICE(0x0cde, 0x0015)}, /* Zcomax XG-705A */
{USB_DEVICE(0x0d8e, 0x3762)}, /* DLink DWL-G120 Cohiba */
{USB_DEVICE(0x124a, 0x4025)}, /* IOGear GWU513 (GW3887IK chip) */
{USB_DEVICE(0x1260, 0xee22)}, /* SMC 2862W-G version 2 */
{USB_DEVICE(0x13b1, 0x000a)}, /* Linksys WUSB54G ver 2 */
{USB_DEVICE(0x13B1, 0x000C)}, /* Linksys WUSB54AG */
{USB_DEVICE(0x1413, 0x5400)}, /* Telsey 802.11g USB2.0 Adapter */
{USB_DEVICE(0x1435, 0x0427)}, /* Inventel UR054G */
/* {USB_DEVICE(0x15a9, 0x0002)}, * Also SparkLAN WL-682 with 3887 */
{USB_DEVICE(0x1668, 0x1050)}, /* Actiontec 802UIG-1 */
{USB_DEVICE(0x1740, 0x1000)}, /* Senao NUB-350 */
{USB_DEVICE(0x2001, 0x3704)}, /* DLink DWL-G122 rev A2 */
{USB_DEVICE(0x2001, 0x3705)}, /* D-Link DWL-G120 rev C1 */
{USB_DEVICE(0x413c, 0x5513)}, /* Dell WLA3310 USB Wireless Adapter */
{USB_DEVICE(0x413c, 0x8102)}, /* Spinnaker DUT */
{USB_DEVICE(0x413c, 0x8104)}, /* Cohiba Proto board */
{}
};
MODULE_DEVICE_TABLE(usb, p54u_table);
static const struct {
u32 intf;
enum p54u_hw_type type;
const char *fw;
char hw[20];
} p54u_fwlist[__NUM_P54U_HWTYPES] = {
{
.type = P54U_NET2280,
.intf = FW_LM86,
.fw = "isl3886usb",
.hw = "ISL3886 + net2280",
},
{
.type = P54U_3887,
.intf = FW_LM87,
.fw = "isl3887usb",
.hw = "ISL3887",
},
};
static void p54u_rx_cb(struct urb *urb)
{
struct sk_buff *skb = (struct sk_buff *) urb->context;
struct p54u_rx_info *info = (struct p54u_rx_info *)skb->cb;
struct ieee80211_hw *dev = info->dev;
struct p54u_priv *priv = dev->priv;
skb_unlink(skb, &priv->rx_queue);
if (unlikely(urb->status)) {
dev_kfree_skb_irq(skb);
return;
}
skb_put(skb, urb->actual_length);
if (priv->hw_type == P54U_NET2280)
skb_pull(skb, priv->common.tx_hdr_len);
if (priv->common.fw_interface == FW_LM87) {
skb_pull(skb, 4);
skb_put(skb, 4);
}
if (p54_rx(dev, skb)) {
skb = dev_alloc_skb(priv->common.rx_mtu + 32);
if (unlikely(!skb)) {
/* TODO check rx queue length and refill *somewhere* */
return;
}
info = (struct p54u_rx_info *) skb->cb;
info->urb = urb;
info->dev = dev;
urb->transfer_buffer = skb_tail_pointer(skb);
urb->context = skb;
} else {
if (priv->hw_type == P54U_NET2280)
skb_push(skb, priv->common.tx_hdr_len);
if (priv->common.fw_interface == FW_LM87) {
skb_push(skb, 4);
skb_put(skb, 4);
}
skb_reset_tail_pointer(skb);
skb_trim(skb, 0);
urb->transfer_buffer = skb_tail_pointer(skb);
}
skb_queue_tail(&priv->rx_queue, skb);
usb_anchor_urb(urb, &priv->submitted);
if (usb_submit_urb(urb, GFP_ATOMIC)) {
skb_unlink(skb, &priv->rx_queue);
usb_unanchor_urb(urb);
dev_kfree_skb_irq(skb);
}
}
static void p54u_tx_cb(struct urb *urb)
{
struct sk_buff *skb = urb->context;
struct ieee80211_hw *dev =
usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
p54_free_skb(dev, skb);
}
static void p54u_tx_dummy_cb(struct urb *urb) { }
static void p54u_free_urbs(struct ieee80211_hw *dev)
{
struct p54u_priv *priv = dev->priv;
usb_kill_anchored_urbs(&priv->submitted);
}
static void p54u_stop(struct ieee80211_hw *dev)
{
/*
* TODO: figure out how to reliably stop the 3887 and net2280 so
* the hardware is still usable next time we want to start it.
* until then, we just stop listening to the hardware..
*/
p54u_free_urbs(dev);
}
static int p54u_init_urbs(struct ieee80211_hw *dev)
{
struct p54u_priv *priv = dev->priv;
struct urb *entry = NULL;
struct sk_buff *skb;
struct p54u_rx_info *info;
int ret = 0;
while (skb_queue_len(&priv->rx_queue) < 32) {
skb = __dev_alloc_skb(priv->common.rx_mtu + 32, GFP_KERNEL);
if (!skb) {
ret = -ENOMEM;
goto err;
}
entry = usb_alloc_urb(0, GFP_KERNEL);
if (!entry) {
ret = -ENOMEM;
goto err;
}
usb_fill_bulk_urb(entry, priv->udev,
usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA),
skb_tail_pointer(skb),
priv->common.rx_mtu + 32, p54u_rx_cb, skb);
info = (struct p54u_rx_info *) skb->cb;
info->urb = entry;
info->dev = dev;
skb_queue_tail(&priv->rx_queue, skb);
usb_anchor_urb(entry, &priv->submitted);
ret = usb_submit_urb(entry, GFP_KERNEL);
if (ret) {
skb_unlink(skb, &priv->rx_queue);
usb_unanchor_urb(entry);
goto err;
}
usb_free_urb(entry);
entry = NULL;
}
return 0;
err:
usb_free_urb(entry);
kfree_skb(skb);
p54u_free_urbs(dev);
return ret;
}
static int p54u_open(struct ieee80211_hw *dev)
{
/*
* TODO: Because we don't know how to reliably stop the 3887 and
* the isl3886+net2280, other than brutally cut off all
* communications. We have to reinitialize the urbs on every start.
*/
return p54u_init_urbs(dev);
}
static __le32 p54u_lm87_chksum(const __le32 *data, size_t length)
{
u32 chk = 0;
length >>= 2;
while (length--) {
chk ^= le32_to_cpu(*data++);
chk = (chk >> 5) ^ (chk << 3);
}
return cpu_to_le32(chk);
}
static void p54u_tx_lm87(struct ieee80211_hw *dev, struct sk_buff *skb)
{
struct p54u_priv *priv = dev->priv;
struct urb *data_urb;
struct lm87_tx_hdr *hdr = (void *)skb->data - sizeof(*hdr);
data_urb = usb_alloc_urb(0, GFP_ATOMIC);
if (!data_urb) {
p54_free_skb(dev, skb);
return;
}
hdr->chksum = p54u_lm87_chksum((__le32 *)skb->data, skb->len);
hdr->device_addr = ((struct p54_hdr *)skb->data)->req_id;
usb_fill_bulk_urb(data_urb, priv->udev,
usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
hdr, skb->len + sizeof(*hdr), FREE_AFTER_TX(skb) ?
p54u_tx_cb : p54u_tx_dummy_cb, skb);
data_urb->transfer_flags |= URB_ZERO_PACKET;
usb_anchor_urb(data_urb, &priv->submitted);
if (usb_submit_urb(data_urb, GFP_ATOMIC)) {
usb_unanchor_urb(data_urb);
p54_free_skb(dev, skb);
}
usb_free_urb(data_urb);
}
static void p54u_tx_net2280(struct ieee80211_hw *dev, struct sk_buff *skb)
{
struct p54u_priv *priv = dev->priv;
struct urb *int_urb = NULL, *data_urb = NULL;
struct net2280_tx_hdr *hdr = (void *)skb->data - sizeof(*hdr);
struct net2280_reg_write *reg = NULL;
int err = -ENOMEM;
reg = kmalloc(sizeof(*reg), GFP_ATOMIC);
if (!reg)
goto out;
int_urb = usb_alloc_urb(0, GFP_ATOMIC);
if (!int_urb)
goto out;
data_urb = usb_alloc_urb(0, GFP_ATOMIC);
if (!data_urb)
goto out;
reg->port = cpu_to_le16(NET2280_DEV_U32);
reg->addr = cpu_to_le32(P54U_DEV_BASE);
reg->val = cpu_to_le32(ISL38XX_DEV_INT_DATA);
memset(hdr, 0, sizeof(*hdr));
hdr->len = cpu_to_le16(skb->len);
hdr->device_addr = ((struct p54_hdr *) skb->data)->req_id;
usb_fill_bulk_urb(int_urb, priv->udev,
usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV), reg, sizeof(*reg),
p54u_tx_dummy_cb, dev);
/*
* URB_FREE_BUFFER triggers a code path in the USB subsystem that will
* free what is inside the transfer_buffer after the last reference to
* the int_urb is dropped.
*/
int_urb->transfer_flags |= URB_FREE_BUFFER | URB_ZERO_PACKET;
reg = NULL;
usb_fill_bulk_urb(data_urb, priv->udev,
usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
hdr, skb->len + sizeof(*hdr), FREE_AFTER_TX(skb) ?
p54u_tx_cb : p54u_tx_dummy_cb, skb);
data_urb->transfer_flags |= URB_ZERO_PACKET;
usb_anchor_urb(int_urb, &priv->submitted);
err = usb_submit_urb(int_urb, GFP_ATOMIC);
if (err) {
usb_unanchor_urb(int_urb);
goto out;
}
usb_anchor_urb(data_urb, &priv->submitted);
err = usb_submit_urb(data_urb, GFP_ATOMIC);
if (err) {
usb_unanchor_urb(data_urb);
goto out;
}
out:
usb_free_urb(int_urb);
usb_free_urb(data_urb);
if (err) {
kfree(reg);
p54_free_skb(dev, skb);
}
}
static int p54u_write(struct p54u_priv *priv,
struct net2280_reg_write *buf,
enum net2280_op_type type,
__le32 addr, __le32 val)
{
unsigned int ep;
int alen;
if (type & 0x0800)
ep = usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV);
else
ep = usb_sndbulkpipe(priv->udev, P54U_PIPE_BRG);
buf->port = cpu_to_le16(type);
buf->addr = addr;
buf->val = val;
return usb_bulk_msg(priv->udev, ep, buf, sizeof(*buf), &alen, 1000);
}
static int p54u_read(struct p54u_priv *priv, void *buf,
enum net2280_op_type type,
__le32 addr, __le32 *val)
{
struct net2280_reg_read *read = buf;
__le32 *reg = buf;
unsigned int ep;
int alen, err;
if (type & 0x0800)
ep = P54U_PIPE_DEV;
else
ep = P54U_PIPE_BRG;
read->port = cpu_to_le16(type);
read->addr = addr;
err = usb_bulk_msg(priv->udev, usb_sndbulkpipe(priv->udev, ep),
read, sizeof(*read), &alen, 1000);
if (err)
return err;
err = usb_bulk_msg(priv->udev, usb_rcvbulkpipe(priv->udev, ep),
reg, sizeof(*reg), &alen, 1000);
if (err)
return err;
*val = *reg;
return 0;
}
static int p54u_bulk_msg(struct p54u_priv *priv, unsigned int ep,
void *data, size_t len)
{
int alen;
return usb_bulk_msg(priv->udev, usb_sndbulkpipe(priv->udev, ep),
data, len, &alen, 2000);
}
static int p54u_device_reset(struct ieee80211_hw *dev)
{
struct p54u_priv *priv = dev->priv;
int ret, lock = (priv->intf->condition != USB_INTERFACE_BINDING);
if (lock) {
ret = usb_lock_device_for_reset(priv->udev, priv->intf);
if (ret < 0) {
dev_err(&priv->udev->dev, "(p54usb) unable to lock "
"device for reset (%d)!\n", ret);
return ret;
}
}
ret = usb_reset_device(priv->udev);
if (lock)
usb_unlock_device(priv->udev);
if (ret)
dev_err(&priv->udev->dev, "(p54usb) unable to reset "
"device (%d)!\n", ret);
return ret;
}
static const char p54u_romboot_3887[] = "~~~~";
static int p54u_firmware_reset_3887(struct ieee80211_hw *dev)
{
struct p54u_priv *priv = dev->priv;
u8 *buf;
int ret;
buf = kmemdup(p54u_romboot_3887, 4, GFP_KERNEL);
if (!buf)
return -ENOMEM;
ret = p54u_bulk_msg(priv, P54U_PIPE_DATA,
buf, 4);
kfree(buf);
if (ret)
dev_err(&priv->udev->dev, "(p54usb) unable to jump to "
"boot ROM (%d)!\n", ret);
return ret;
}
static const char p54u_firmware_upload_3887[] = "<\r";
static int p54u_upload_firmware_3887(struct ieee80211_hw *dev)
{
struct p54u_priv *priv = dev->priv;
int err, alen;
u8 carry = 0;
u8 *buf, *tmp;
const u8 *data;
unsigned int left, remains, block_size;
struct x2_header *hdr;
unsigned long timeout;
err = p54u_firmware_reset_3887(dev);
if (err)
return err;
tmp = buf = kmalloc(P54U_FW_BLOCK, GFP_KERNEL);
if (!buf)
return -ENOMEM;
left = block_size = min_t(size_t, P54U_FW_BLOCK, priv->fw->size);
strcpy(buf, p54u_firmware_upload_3887);
left -= strlen(p54u_firmware_upload_3887);
tmp += strlen(p54u_firmware_upload_3887);
data = priv->fw->data;
remains = priv->fw->size;
hdr = (struct x2_header *)(buf + strlen(p54u_firmware_upload_3887));
memcpy(hdr->signature, X2_SIGNATURE, X2_SIGNATURE_SIZE);
hdr->fw_load_addr = cpu_to_le32(ISL38XX_DEV_FIRMWARE_ADDR);
hdr->fw_length = cpu_to_le32(priv->fw->size);
hdr->crc = cpu_to_le32(~crc32_le(~0, (void *)&hdr->fw_load_addr,
sizeof(u32)*2));
left -= sizeof(*hdr);
tmp += sizeof(*hdr);
while (remains) {
while (left--) {
if (carry) {
*tmp++ = carry;
carry = 0;
remains--;
continue;
}
switch (*data) {
case '~':
*tmp++ = '}';
carry = '^';
break;
case '}':
*tmp++ = '}';
carry = ']';
break;
default:
*tmp++ = *data;
remains--;
break;
}
data++;
}
err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, block_size);
if (err) {
dev_err(&priv->udev->dev, "(p54usb) firmware "
"upload failed!\n");
goto err_upload_failed;
}
tmp = buf;
left = block_size = min((unsigned int)P54U_FW_BLOCK, remains);
}
*((__le32 *)buf) = cpu_to_le32(~crc32_le(~0, priv->fw->data,
priv->fw->size));
err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, sizeof(u32));
if (err) {
dev_err(&priv->udev->dev, "(p54usb) firmware upload failed!\n");
goto err_upload_failed;
}
timeout = jiffies + msecs_to_jiffies(1000);
while (!(err = usb_bulk_msg(priv->udev,
usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), buf, 128, &alen, 1000))) {
if (alen > 2 && !memcmp(buf, "OK", 2))
break;
if (alen > 5 && !memcmp(buf, "ERROR", 5)) {
err = -EINVAL;
break;
}
if (time_after(jiffies, timeout)) {
dev_err(&priv->udev->dev, "(p54usb) firmware boot "
"timed out!\n");
err = -ETIMEDOUT;
break;
}
}
if (err) {
dev_err(&priv->udev->dev, "(p54usb) firmware upload failed!\n");
goto err_upload_failed;
}
buf[0] = 'g';
buf[1] = '\r';
err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, 2);
if (err) {
dev_err(&priv->udev->dev, "(p54usb) firmware boot failed!\n");
goto err_upload_failed;
}
timeout = jiffies + msecs_to_jiffies(1000);
while (!(err = usb_bulk_msg(priv->udev,
usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), buf, 128, &alen, 1000))) {
if (alen > 0 && buf[0] == 'g')
break;
if (time_after(jiffies, timeout)) {
err = -ETIMEDOUT;
break;
}
}
if (err)
goto err_upload_failed;
err_upload_failed:
kfree(buf);
return err;
}
static int p54u_upload_firmware_net2280(struct ieee80211_hw *dev)
{
struct p54u_priv *priv = dev->priv;
const struct p54p_csr *devreg = (const struct p54p_csr *) P54U_DEV_BASE;
int err, alen;
void *buf;
__le32 reg;
unsigned int remains, offset;
const u8 *data;
buf = kmalloc(512, GFP_KERNEL);
if (!buf)
return -ENOMEM;
#define P54U_WRITE(type, addr, data) \
do {\
err = p54u_write(priv, buf, type,\
cpu_to_le32((u32)(unsigned long)addr), data);\
if (err) \
goto fail;\
} while (0)
#define P54U_READ(type, addr) \
do {\
err = p54u_read(priv, buf, type,\
cpu_to_le32((u32)(unsigned long)addr), &reg);\
if (err)\
goto fail;\
} while (0)
/* power down net2280 bridge */
P54U_READ(NET2280_BRG_U32, NET2280_GPIOCTL);
reg |= cpu_to_le32(P54U_BRG_POWER_DOWN);
reg &= cpu_to_le32(~P54U_BRG_POWER_UP);
P54U_WRITE(NET2280_BRG_U32, NET2280_GPIOCTL, reg);
mdelay(100);
/* power up bridge */
reg |= cpu_to_le32(P54U_BRG_POWER_UP);
reg &= cpu_to_le32(~P54U_BRG_POWER_DOWN);
P54U_WRITE(NET2280_BRG_U32, NET2280_GPIOCTL, reg);
mdelay(100);
P54U_WRITE(NET2280_BRG_U32, NET2280_DEVINIT,
cpu_to_le32(NET2280_CLK_30Mhz |
NET2280_PCI_ENABLE |
NET2280_PCI_SOFT_RESET));
mdelay(20);
P54U_WRITE(NET2280_BRG_CFG_U16, PCI_COMMAND,
cpu_to_le32(PCI_COMMAND_MEMORY |
PCI_COMMAND_MASTER));
P54U_WRITE(NET2280_BRG_CFG_U32, PCI_BASE_ADDRESS_0,
cpu_to_le32(NET2280_BASE));
P54U_READ(NET2280_BRG_CFG_U16, PCI_STATUS);
reg |= cpu_to_le32(PCI_STATUS_REC_MASTER_ABORT);
P54U_WRITE(NET2280_BRG_CFG_U16, PCI_STATUS, reg);
// TODO: we really need this?
P54U_READ(NET2280_BRG_U32, NET2280_RELNUM);
P54U_WRITE(NET2280_BRG_U32, NET2280_EPA_RSP,
cpu_to_le32(NET2280_CLEAR_NAK_OUT_PACKETS_MODE));
P54U_WRITE(NET2280_BRG_U32, NET2280_EPC_RSP,
cpu_to_le32(NET2280_CLEAR_NAK_OUT_PACKETS_MODE));
P54U_WRITE(NET2280_BRG_CFG_U32, PCI_BASE_ADDRESS_2,
cpu_to_le32(NET2280_BASE2));
/* finally done setting up the bridge */
P54U_WRITE(NET2280_DEV_CFG_U16, 0x10000 | PCI_COMMAND,
cpu_to_le32(PCI_COMMAND_MEMORY |
PCI_COMMAND_MASTER));
P54U_WRITE(NET2280_DEV_CFG_U16, 0x10000 | 0x40 /* TRDY timeout */, 0);
P54U_WRITE(NET2280_DEV_CFG_U32, 0x10000 | PCI_BASE_ADDRESS_0,
cpu_to_le32(P54U_DEV_BASE));
P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1, 0);
P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
/* do romboot */
P54U_WRITE(NET2280_DEV_U32, &devreg->int_enable, 0);
P54U_READ(NET2280_DEV_U32, &devreg->ctrl_stat);
reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RAMBOOT);
reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
mdelay(20);
reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
mdelay(20);
reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
mdelay(100);
P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
/* finally, we can upload firmware now! */
remains = priv->fw->size;
data = priv->fw->data;
offset = ISL38XX_DEV_FIRMWARE_ADDR;
while (remains) {
unsigned int block_len = min(remains, (unsigned int)512);
memcpy(buf, data, block_len);
err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, block_len);
if (err) {
dev_err(&priv->udev->dev, "(p54usb) firmware block "
"upload failed\n");
goto fail;
}
P54U_WRITE(NET2280_DEV_U32, &devreg->direct_mem_base,
cpu_to_le32(0xc0000f00));
P54U_WRITE(NET2280_DEV_U32,
0x0020 | (unsigned long)&devreg->direct_mem_win, 0);
P54U_WRITE(NET2280_DEV_U32,
0x0020 | (unsigned long)&devreg->direct_mem_win,
cpu_to_le32(1));
P54U_WRITE(NET2280_DEV_U32,
0x0024 | (unsigned long)&devreg->direct_mem_win,
cpu_to_le32(block_len));
P54U_WRITE(NET2280_DEV_U32,
0x0028 | (unsigned long)&devreg->direct_mem_win,
cpu_to_le32(offset));
P54U_WRITE(NET2280_DEV_U32, &devreg->dma_addr,
cpu_to_le32(NET2280_EPA_FIFO_PCI_ADDR));
P54U_WRITE(NET2280_DEV_U32, &devreg->dma_len,
cpu_to_le32(block_len >> 2));
P54U_WRITE(NET2280_DEV_U32, &devreg->dma_ctrl,
cpu_to_le32(ISL38XX_DMA_MASTER_CONTROL_TRIGGER));
mdelay(10);
P54U_READ(NET2280_DEV_U32,
0x002C | (unsigned long)&devreg->direct_mem_win);
if (!(reg & cpu_to_le32(ISL38XX_DMA_STATUS_DONE)) ||
!(reg & cpu_to_le32(ISL38XX_DMA_STATUS_READY))) {
dev_err(&priv->udev->dev, "(p54usb) firmware DMA "
"transfer failed\n");
goto fail;
}
P54U_WRITE(NET2280_BRG_U32, NET2280_EPA_STAT,
cpu_to_le32(NET2280_FIFO_FLUSH));
remains -= block_len;
data += block_len;
offset += block_len;
}
/* do ramboot */
P54U_READ(NET2280_DEV_U32, &devreg->ctrl_stat);
reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RAMBOOT);
P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
mdelay(20);
reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
mdelay(100);
P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
/* start up the firmware */
P54U_WRITE(NET2280_DEV_U32, &devreg->int_enable,
cpu_to_le32(ISL38XX_INT_IDENT_INIT));
P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1,
cpu_to_le32(NET2280_PCI_INTA_INTERRUPT_ENABLE |
NET2280_USB_INTERRUPT_ENABLE));
P54U_WRITE(NET2280_DEV_U32, &devreg->dev_int,
cpu_to_le32(ISL38XX_DEV_INT_RESET));
err = usb_interrupt_msg(priv->udev,
usb_rcvbulkpipe(priv->udev, P54U_PIPE_INT),
buf, sizeof(__le32), &alen, 1000);
if (err || alen != sizeof(__le32))
goto fail;
P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
if (!(reg & cpu_to_le32(ISL38XX_INT_IDENT_INIT)))
err = -EINVAL;
P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1, 0);
P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
#undef P54U_WRITE
#undef P54U_READ
fail:
kfree(buf);
return err;
}
static int p54_find_type(struct p54u_priv *priv)
{
int i;
for (i = 0; i < __NUM_P54U_HWTYPES; i++)
if (p54u_fwlist[i].type == priv->hw_type)
break;
if (i == __NUM_P54U_HWTYPES)
return -EOPNOTSUPP;
return i;
}
static int p54u_start_ops(struct p54u_priv *priv)
{
struct ieee80211_hw *dev = priv->common.hw;
int ret;
ret = p54_parse_firmware(dev, priv->fw);
if (ret)
goto err_out;
ret = p54_find_type(priv);
if (ret < 0)
goto err_out;
if (priv->common.fw_interface != p54u_fwlist[ret].intf) {
dev_err(&priv->udev->dev, "wrong firmware, please get "
"a firmware for \"%s\" and try again.\n",
p54u_fwlist[ret].hw);
ret = -ENODEV;
goto err_out;
}
ret = priv->upload_fw(dev);
if (ret)
goto err_out;
ret = p54u_open(dev);
if (ret)
goto err_out;
ret = p54_read_eeprom(dev);
if (ret)
goto err_stop;
p54u_stop(dev);
ret = p54_register_common(dev, &priv->udev->dev);
if (ret)
goto err_stop;
return 0;
err_stop:
p54u_stop(dev);
err_out:
/*
* p54u_disconnect will do the rest of the
* cleanup
*/
return ret;
}
static void p54u_load_firmware_cb(const struct firmware *firmware,
void *context)
{
struct p54u_priv *priv = context;
struct usb_device *udev = priv->udev;
struct usb_interface *intf = priv->intf;
int err;
if (firmware) {
priv->fw = firmware;
err = p54u_start_ops(priv);
} else {
err = -ENOENT;
dev_err(&udev->dev, "Firmware not found.\n");
}
complete(&priv->fw_wait_load);
/*
* At this point p54u_disconnect may have already freed
* the "priv" context. Do not use it anymore!
*/
priv = NULL;
if (err) {
dev_err(&intf->dev, "failed to initialize device (%d)\n", err);
usb_lock_device(udev);
usb_driver_release_interface(&p54u_driver, intf);
usb_unlock_device(udev);
}
usb_put_intf(intf);
}
static int p54u_load_firmware(struct ieee80211_hw *dev,
struct usb_interface *intf)
{
struct usb_device *udev = interface_to_usbdev(intf);
struct p54u_priv *priv = dev->priv;
struct device *device = &udev->dev;
int err, i;
BUILD_BUG_ON(ARRAY_SIZE(p54u_fwlist) != __NUM_P54U_HWTYPES);
init_completion(&priv->fw_wait_load);
i = p54_find_type(priv);
if (i < 0)
return i;
dev_info(&priv->udev->dev, "Loading firmware file %s\n",
p54u_fwlist[i].fw);
usb_get_intf(intf);
err = request_firmware_nowait(THIS_MODULE, 1, p54u_fwlist[i].fw,
device, GFP_KERNEL, priv,
p54u_load_firmware_cb);
if (err) {
dev_err(&priv->udev->dev, "(p54usb) cannot load firmware %s "
"(%d)!\n", p54u_fwlist[i].fw, err);
usb_put_intf(intf);
}
return err;
}
static int p54u_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev(intf);
struct ieee80211_hw *dev;
struct p54u_priv *priv;
int err;
unsigned int i, recognized_pipes;
dev = p54_init_common(sizeof(*priv));
if (!dev) {
dev_err(&udev->dev, "(p54usb) ieee80211 alloc failed\n");
return -ENOMEM;
}
priv = dev->priv;
priv->hw_type = P54U_INVALID_HW;
SET_IEEE80211_DEV(dev, &intf->dev);
usb_set_intfdata(intf, dev);
priv->udev = udev;
priv->intf = intf;
skb_queue_head_init(&priv->rx_queue);
init_usb_anchor(&priv->submitted);
/* really lazy and simple way of figuring out if we're a 3887 */
/* TODO: should just stick the identification in the device table */
i = intf->altsetting->desc.bNumEndpoints;
recognized_pipes = 0;
while (i--) {
switch (intf->altsetting->endpoint[i].desc.bEndpointAddress) {
case P54U_PIPE_DATA:
case P54U_PIPE_MGMT:
case P54U_PIPE_BRG:
case P54U_PIPE_DEV:
case P54U_PIPE_DATA | USB_DIR_IN:
case P54U_PIPE_MGMT | USB_DIR_IN:
case P54U_PIPE_BRG | USB_DIR_IN:
case P54U_PIPE_DEV | USB_DIR_IN:
case P54U_PIPE_INT | USB_DIR_IN:
recognized_pipes++;
}
}
priv->common.open = p54u_open;
priv->common.stop = p54u_stop;
if (recognized_pipes < P54U_PIPE_NUMBER) {
#ifdef CONFIG_PM
/* ISL3887 needs a full reset on resume */
udev->reset_resume = 1;
#endif /* CONFIG_PM */
err = p54u_device_reset(dev);
priv->hw_type = P54U_3887;
dev->extra_tx_headroom += sizeof(struct lm87_tx_hdr);
priv->common.tx_hdr_len = sizeof(struct lm87_tx_hdr);
priv->common.tx = p54u_tx_lm87;
priv->upload_fw = p54u_upload_firmware_3887;
} else {
priv->hw_type = P54U_NET2280;
dev->extra_tx_headroom += sizeof(struct net2280_tx_hdr);
priv->common.tx_hdr_len = sizeof(struct net2280_tx_hdr);
priv->common.tx = p54u_tx_net2280;
priv->upload_fw = p54u_upload_firmware_net2280;
}
err = p54u_load_firmware(dev, intf);
if (err)
p54_free_common(dev);
return err;
}
static void p54u_disconnect(struct usb_interface *intf)
{
struct ieee80211_hw *dev = usb_get_intfdata(intf);
struct p54u_priv *priv;
if (!dev)
return;
priv = dev->priv;
wait_for_completion(&priv->fw_wait_load);
p54_unregister_common(dev);
release_firmware(priv->fw);
p54_free_common(dev);
}
static int p54u_pre_reset(struct usb_interface *intf)
{
struct ieee80211_hw *dev = usb_get_intfdata(intf);
if (!dev)
return -ENODEV;
p54u_stop(dev);
return 0;
}
static int p54u_resume(struct usb_interface *intf)
{
struct ieee80211_hw *dev = usb_get_intfdata(intf);
struct p54u_priv *priv;
if (!dev)
return -ENODEV;
priv = dev->priv;
if (unlikely(!(priv->upload_fw && priv->fw)))
return 0;
return priv->upload_fw(dev);
}
static int p54u_post_reset(struct usb_interface *intf)
{
struct ieee80211_hw *dev = usb_get_intfdata(intf);
struct p54u_priv *priv;
int err;
err = p54u_resume(intf);
if (err)
return err;
/* reinitialize old device state */
priv = dev->priv;
if (priv->common.mode != NL80211_IFTYPE_UNSPECIFIED)
ieee80211_restart_hw(dev);
return 0;
}
#ifdef CONFIG_PM
static int p54u_suspend(struct usb_interface *intf, pm_message_t message)
{
return p54u_pre_reset(intf);
}
#endif /* CONFIG_PM */
static struct usb_driver p54u_driver = {
.name = "p54usb",
.id_table = p54u_table,
.probe = p54u_probe,
.disconnect = p54u_disconnect,
.pre_reset = p54u_pre_reset,
.post_reset = p54u_post_reset,
#ifdef CONFIG_PM
.suspend = p54u_suspend,
.resume = p54u_resume,
.reset_resume = p54u_resume,
#endif /* CONFIG_PM */
.soft_unbind = 1,
.disable_hub_initiated_lpm = 1,
};
module_usb_driver(p54u_driver);