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/*
* receive.c
*
* handle download packet, private cmd and control/data packet
*/
#include "headers.h"
#include "wimax_plat.h"
#include "firmware.h"
#include "download.h"
#include <plat/sdhci.h>
#include <plat/devs.h>
#include <linux/mmc/host.h>
#include <linux/kthread.h>
extern struct image_data g_wimax_image;
void process_indicate_packet(struct net_adapter *adapter, u_char *buffer)
{
struct wimax_msg_header *packet;
char *tmp_byte;
struct wimax_cfg *g_cfg = adapter->pdata->g_cfg;
packet = (struct wimax_msg_header *)buffer;
if (packet->type == be16_to_cpu(ETHERTYPE_DL)) {
switch (be16_to_cpu(packet->id)) {
case MSG_DRIVER_OK_RESP:
dump_debug("process_indicate_packet: MSG_DRIVER_OK_RESP");
send_image_info_packet(adapter, MSG_IMAGE_INFO_REQ);
break;
case MSG_IMAGE_INFO_RESP:
dump_debug("process_indicate_packet: MSG_IMAGE_INFO_RESP");
send_image_data_packet(adapter, MSG_IMAGE_DATA_REQ);
break;
case MSG_IMAGE_DATA_RESP:
if (g_wimax_image.offset == g_wimax_image.size) {
dump_debug("process_indicate_packet: Image Download Complete");
send_cmd_packet(adapter, MSG_RUN_REQ); /* Run Message Send */
} else
send_image_data_packet(adapter, MSG_IMAGE_DATA_REQ);
break;
case MSG_RUN_RESP:
tmp_byte = (char *)(buffer + sizeof(struct wimax_msg_header));
if (*tmp_byte == 0x01) {
dump_debug("process_indicate_packet: MSG_RUN_RESP");
if (g_cfg->wimax_mode == SDIO_MODE || g_cfg->wimax_mode == DM_MODE
|| g_cfg->wimax_mode == USB_MODE
|| g_cfg->wimax_mode == USIM_RELAY_MODE) {
dump_debug("%s: F/W Download Complete and Running ",__func__);
dump_debug("Wait for SDIO ready...");
msleep(1200); /* IMPORTANT!! wait for cmc730 can handle mac req packet */
kernel_thread((int (*)(void *))hw_get_mac_address, adapter, 0);
} else if (g_cfg->wimax_mode == WTM_MODE) {
adapter->download_complete = TRUE;
wake_up_interruptible(&adapter->download_event);
adapter->pdata->g_cfg->powerup_done = true ;
adapter->wtm_task = kthread_create(
con0_poll_thread, adapter, "%s",
"wimax_con0_poll_thread");
if (adapter->wtm_task)
wake_up_process(
adapter->wtm_task);
} else if (g_cfg->wimax_mode == AUTH_MODE) {
adapter->download_complete = TRUE;
wake_up_interruptible(&adapter->download_event);
adapter->pdata->g_cfg->powerup_done = true ;
}
}
break;
default:
dump_debug("process_indicate_packet: Unkown type");
break;
}
}
else
dump_debug("process_indicate_packet - is not download pakcet");
}
u_long process_private_cmd(struct net_adapter *adapter, void *buffer)
{
struct hw_private_packet *cmd;
u_char *bufp;
struct wimax_cfg *g_cfg = adapter->pdata->g_cfg;
cmd = (struct hw_private_packet *)buffer;
switch (cmd->code) {
case HwCodeMacResponse: {
u_char mac_addr[ETHERNET_ADDRESS_LENGTH];
bufp = (u_char *)buffer;
/* processing for mac_req request */
#ifndef PRODUCT_SHIP
dump_debug("MAC address = %02x:%02x:%02x:%02x:%02x:%02x",
bufp[3], bufp[4], bufp[5], bufp[6], bufp[7], bufp[8]);
#endif
memcpy(mac_addr, bufp + 3, ETHERNET_ADDRESS_LENGTH);
/* create ethernet header */
memcpy(adapter->hw.eth_header, mac_addr, ETHERNET_ADDRESS_LENGTH);
memcpy(adapter->hw.eth_header + ETHERNET_ADDRESS_LENGTH, mac_addr, ETHERNET_ADDRESS_LENGTH);
adapter->hw.eth_header[(ETHERNET_ADDRESS_LENGTH * 2) - 1] += 1;
memcpy(adapter->net->dev_addr, bufp + 3, ETHERNET_ADDRESS_LENGTH);
adapter->mac_ready = TRUE;
if (adapter->downloading) {
adapter->download_complete = TRUE;
wake_up_interruptible(&adapter->download_event);
}
return (sizeof(struct hw_private_packet) + ETHERNET_ADDRESS_LENGTH - sizeof(u_char));
}
case HwCodeLinkIndication: {
if ((cmd->value == HW_PROT_VALUE_LINK_DOWN)
&& (adapter->media_state != MEDIA_DISCONNECTED)) {
dump_debug("LINK_DOWN_INDICATION");
s3c_bat_use_wimax(0);
/* set values */
adapter->media_state = MEDIA_DISCONNECTED;
/* indicate link down */
netif_stop_queue(adapter->net);
netif_carrier_off(adapter->net);
} else if ((cmd->value == HW_PROT_VALUE_LINK_UP)
&& (adapter->media_state != MEDIA_CONNECTED)) {
dump_debug("LINK_UP_INDICATION");
s3c_bat_use_wimax(1);
/* set values */
adapter->media_state = MEDIA_CONNECTED;
adapter->net->mtu = WIMAX_MTU_SIZE;
/* indicate link up */
netif_start_queue(adapter->net);
netif_carrier_on(adapter->net);
}
break;
}
case HwCodeHaltedIndication: {
dump_debug("Device is about to reset, stop driver");
break;
}
case HwCodeRxReadyIndication: {
dump_debug("Device RxReady");
/* to start the data packet send queue again after stopping in xmit */
if (adapter->media_state == MEDIA_CONNECTED)
netif_wake_queue(adapter->net);
break;
}
case HwCodeIdleNtfy: {
/* set idle / vi */
dump_debug("process_private_cmd: HwCodeIdleNtfy");
s3c_bat_use_wimax(0);
break;
}
case HwCodeWakeUpNtfy: {
/* IMPORTANT!! at least 4 sec is required after modem waked up */
wake_lock_timeout(&g_cfg->wimax_wake_lock, 4 * HZ);
dump_debug("process_private_cmd: HwCodeWakeUpNtfy");
s3c_bat_use_wimax(1);
break;
}
default:
dump_debug("Command = %04x", cmd->code);
break;
}
return sizeof(struct hw_private_packet);
}
u_int process_sdio_data(struct net_adapter *adapter,
void *buffer, u_long length, long Timeout)
{
struct hw_packet_header *hdr;
struct net_device *net = adapter->net;
u_char *ofs = (u_char *)buffer;
int res = 0;
u_int machdrlen = (ETHERNET_ADDRESS_LENGTH * 2);
u_int rlen = length;
u_long type;
u_short data_len;
struct sk_buff *skb;
while ((int)rlen > 0) {
hdr = (struct hw_packet_header *)ofs;
type = HwPktTypeNone;
if (unlikely(hdr->id0 != 'W')) { /* "WD", "WC", "WP" or "WE" */
if (rlen > 4) {
dump_debug("Wrong packet ID (%02x %02x)", hdr->id0, hdr->id1);
dump_buffer("Wrong packet", (u_char *)ofs, rlen);
}
/* skip rest of packets */
return 0;
}
/* check packet type */
switch (hdr->id1) {
case 'P': {
u_long l = 0;
type = HwPktTypePrivate;
/* process packet */
l = process_private_cmd(adapter, ofs);
/* shift */
ofs += l;
rlen -= l;
/* process next packet */
continue;
}
case 'C':
type = HwPktTypeControl;
break;
case 'D':
type = HwPktTypeData;
break;
case 'E':
/* skip rest of buffer */
return 0;
default:
dump_debug("hwParseReceivedData : Wrong packet ID [%02x %02x]",
hdr->id0, hdr->id1);
/* skip rest of buffer */
return 0;
}
if (likely(!adapter->downloading)) {
if (unlikely(hdr->length > WIMAX_MAX_TOTAL_SIZE
|| ((hdr->length + sizeof(struct hw_packet_header)) > rlen))) {
dump_debug("Packet length is too big (%d)", hdr->length);
/* skip rest of packets */
return 0;
}
}
/* change offset */
ofs += sizeof(struct hw_packet_header);
rlen -= sizeof(struct hw_packet_header);
/* process download packet, data and control packet */
if (likely(!adapter->downloading))
{
#ifdef HARDWARE_USE_ALIGN_HEADER
ofs += 2;
rlen -= 2;
#endif
/* store the packet length */
/* because we will overwrite the hardware packet header */
data_len = hdr->length;
/* copy the MAC to ofs buffer */
memcpy((u_char *)ofs - machdrlen, adapter->hw.eth_header, machdrlen);
if (unlikely(type == HwPktTypeControl))
control_recv(adapter, (u_char *)ofs -machdrlen,
data_len + machdrlen);
else {
skb = dev_alloc_skb(data_len + machdrlen + 2);
if(!skb)
{
dump_debug("MEMORY PINCH: unable to allocate skb");
return -ENOMEM;
}
skb_reserve(skb, 2);
memcpy(skb_put(skb, (data_len + machdrlen)),
(u_char *)ofs -machdrlen,
(data_len + machdrlen));
skb->dev = net;
skb->protocol = eth_type_trans(skb, net);
skb->ip_summed = CHECKSUM_UNNECESSARY;
res = netif_rx(skb);
adapter->netstats.rx_packets++;
adapter->netstats.rx_bytes += (data_len + machdrlen);
}
/* restore the hardware packet length information */
hdr->length = data_len;
} else {
hdr->length -= sizeof(struct hw_packet_header);
process_indicate_packet(adapter, ofs);
}
/*
* If the packet is unreasonably long, quietly drop it rather than
* kernel panicing by calling skb_put.
*/
/* shift */
ofs += hdr->length;
rlen-= hdr->length;
}
return 0;
}
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