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p54usb: support LM87 firmwares 

This patch adds the necessary changes to support LM87 firmwares.

Signed-off-by: Christian Lamparter <chunkeey@web.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Christian Lamparter 2008-09-04 12:29:38 +02:00 committed by John W. Linville
parent d203b8ef8e
commit 2b80848e38
5 changed files with 73 additions and 20 deletions
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6
drivers/net/wireless/p54/p54.h
View File

@ -42,6 +42,11 @@ struct p54_control_hdr {
#define ISL38XX_DEV_FIRMWARE_ADDR 0x20000
#define FW_FMAC 0x464d4143
#define FW_LM86 0x4c4d3836
#define FW_LM87 0x4c4d3837
#define FW_LM20 0x4c4d3230
struct p54_common {
u32 rx_start;
u32 rx_end;
@ -68,6 +73,7 @@ struct p54_common {
unsigned int tx_hdr_len;
void *cached_vdcf;
unsigned int fw_var;
unsigned int fw_interface;
struct ieee80211_tx_queue_stats tx_stats[8];
void *eeprom;
struct completion eeprom_comp;

5
drivers/net/wireless/p54/p54common.c
View File

@ -93,7 +93,8 @@ int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
u32 code = le32_to_cpu(bootrec->code);
switch (code) {
case BR_CODE_COMPONENT_ID:
switch (be32_to_cpu(*(__be32 *)bootrec->data)) {
priv->fw_interface = be32_to_cpup(bootrec->data);
switch (priv->fw_interface) {
case FW_FMAC:
printk(KERN_INFO "p54: FreeMAC firmware\n");
break;
@ -104,7 +105,7 @@ int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
printk(KERN_INFO "p54: LM86 firmware\n");
break;
case FW_LM87:
printk(KERN_INFO "p54: LM87 firmware - not supported yet!\n");
printk(KERN_INFO "p54: LM87 firmware\n");
break;
default:
printk(KERN_INFO "p54: unknown firmware\n");

5
drivers/net/wireless/p54/p54common.h
View File

@ -50,11 +50,6 @@ struct bootrec_desc {
#define BR_CODE_END_OF_BRA 0xFF0000FF
#define LEGACY_BR_CODE_END_OF_BRA 0xFFFFFFFF
#define FW_FMAC 0x464d4143
#define FW_LM86 0x4c4d3836
#define FW_LM87 0x4c4d3837
#define FW_LM20 0x4c4d3230
/* PDA defines are Copyright (C) 2005 Nokia Corporation (taken from islsm_pda.h) */
struct pda_entry {

70
drivers/net/wireless/p54/p54usb.c
View File

@ -91,8 +91,13 @@ static void p54u_rx_cb(struct urb *urb)
skb_unlink(skb, &priv->rx_queue);
skb_put(skb, urb->actual_length);
if (!priv->hw_type)
skb_pull(skb, sizeof(struct net2280_tx_hdr));
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);
@ -109,9 +114,12 @@ static void p54u_rx_cb(struct urb *urb)
urb->context = skb;
skb_queue_tail(&priv->rx_queue, skb);
} else {
if (!priv->hw_type)
skb_push(skb, sizeof(struct net2280_tx_hdr));
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);
if (urb->transfer_buffer != skb_tail_pointer(skb)) {
@ -210,6 +218,42 @@ static void p54u_tx_3887(struct ieee80211_hw *dev, struct p54_control_hdr *data,
usb_submit_urb(data_urb, GFP_ATOMIC);
}
__le32 p54u_lm87_chksum(const u32 *data, size_t length)
{
__le32 chk = 0;
length >>= 2;
while (length--) {
chk ^= cpu_to_le32(*data++);
chk = (chk >> 5) ^ (chk << 3);
}
return chk;
}
static void p54u_tx_lm87(struct ieee80211_hw *dev,
struct p54_control_hdr *data,
size_t len, int free_on_tx)
{
struct p54u_priv *priv = dev->priv;
struct urb *data_urb;
struct lm87_tx_hdr *hdr = (void *)data - sizeof(*hdr);
data_urb = usb_alloc_urb(0, GFP_ATOMIC);
if (!data_urb)
return;
hdr->chksum = p54u_lm87_chksum((u32 *)data, len);
hdr->device_addr = data->req_id;
usb_fill_bulk_urb(data_urb, priv->udev,
usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA), hdr,
len + sizeof(*hdr), free_on_tx ? p54u_tx_free_cb : p54u_tx_cb,
dev);
usb_submit_urb(data_urb, GFP_ATOMIC);
}
static void p54u_tx_net2280(struct ieee80211_hw *dev, struct p54_control_hdr *data,
size_t len, int free_on_tx)
{
@ -776,21 +820,23 @@ static int __devinit p54u_probe(struct usb_interface *intf,
}
}
priv->common.open = p54u_open;
priv->common.stop = p54u_stop;
if (recognized_pipes < P54U_PIPE_NUMBER) {
priv->hw_type = P54U_3887;
err = p54u_upload_firmware_3887(dev);
if (priv->common.fw_interface == FW_LM87) {
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;
} else
priv->common.tx = p54u_tx_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->common.stop = p54u_stop;
if (priv->hw_type)
err = p54u_upload_firmware_3887(dev);
else
err = p54u_upload_firmware_net2280(dev);
}
if (err)
goto err_free_dev;

5
drivers/net/wireless/p54/p54usb.h
View File

@ -72,6 +72,11 @@ struct net2280_tx_hdr {
u8 padding[8];
} __attribute__((packed));
struct lm87_tx_hdr {
__le32 device_addr;
__le32 chksum;
} __attribute__((packed));
/* Some flags for the isl hardware registers controlling DMA inside the
* chip */
#define ISL38XX_DMA_STATUS_DONE 0x00000001