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staging: gdm724x: Remove unused driver

Browse Source 
Won Kang from gct contributed the driver in 2013.

The following reasons lead to the removal:
- This driver generates maintenance workload
- The manufacturer is not interested and does not care as Emails or
  inquiries, to support or involved persons of gct, got unanswered.
- Did not find a possibility to buy the chips.
- Did not find minimal documentation on the web.
- Did not find a device where it is build in and the user is able to
  install any Linux. Therefore it is not possible to do any testing of
  the driver from the community.
- No blog entries about anyone using the gdmtty and gdmulte.
- No response about usage of this drivers to the Email from April 2024

Link: https://lore.kernel.org/linux-staging/2024100910-smoky-condiment-2298@gregkh/T/#u
Link: https://lore.kernel.org/all/78b521eb-4e89-4c01-8dfc-1fb990e6887d@gmail.com/
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/20241010191508.21055-1-philipp.g.hortmann@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Philipp Hortmann 2024-10-10 21:15:06 +02:00 committed by Greg Kroah-Hartman
parent 5062f8f525
commit 1c2d364e7f
19 changed files with 0 additions and 3630 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/staging/Kconfig
View File

@ -42,8 +42,6 @@ source "drivers/staging/nvec/Kconfig"
source "drivers/staging/media/Kconfig"
source "drivers/staging/gdm724x/Kconfig"
source "drivers/staging/fbtft/Kconfig"
source "drivers/staging/most/Kconfig"

1
drivers/staging/Makefile
View File

@ -11,7 +11,6 @@ obj-$(CONFIG_VME_BUS) += vme_user/
obj-$(CONFIG_IIO) += iio/
obj-$(CONFIG_FB_SM750) += sm750fb/
obj-$(CONFIG_MFD_NVEC) += nvec/
obj-$(CONFIG_LTE_GDM724X) += gdm724x/
obj-$(CONFIG_FB_TFT) += fbtft/
obj-$(CONFIG_MOST) += most/
obj-$(CONFIG_GREYBUS) += greybus/

16
drivers/staging/gdm724x/Kconfig
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@ -1,16 +0,0 @@
# SPDX-License-Identifier: GPL-2.0
#
# GCT GDM724x LTE driver configuration
#
config LTE_GDM724X
tristate "GCT GDM724x LTE support"
depends on NET && USB && TTY && m
help
This driver supports GCT GDM724x LTE chip based USB modem devices.
It exposes 4 network devices to be used per PDN and 2 tty devices to be
used for AT commands and DM monitoring applications.
The modules will be called gdmulte.ko and gdmtty.ko
GCT-ATCx can be used for AT Commands
GCT-DMx can be used for LTE protocol monitoring

8
drivers/staging/gdm724x/Makefile
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@ -1,8 +0,0 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_LTE_GDM724X) := gdmulte.o
gdmulte-y += gdm_lte.o netlink_k.o
gdmulte-y += gdm_usb.o gdm_endian.o
obj-$(CONFIG_LTE_GDM724X) += gdmtty.o
gdmtty-y := gdm_tty.o gdm_mux.o

15
drivers/staging/gdm724x/TODO
View File

@ -1,15 +0,0 @@
TODO:
- Clean up coding style to meet kernel standard. (80 line limit, netdev_err)
- Remove test for host endian
- Remove confusing macros (endian, hci_send, sdu_send, rcv_with_cb)
- Check for skb->len in gdm_lte_emulate_arp()
- Use ALIGN() macro for dummy_cnt in up_to_host()
- Error handling in init_usb()
- Explain reason for multiples of 512 bytes in alloc_tx_struct()
- Review use of atomic allocation for tx structs
- No error checking for alloc_tx_struct in do_tx()
- fix up static tty port allocation to be dynamic
Patches to:
Jonathan Kim <jonathankim@gctsemi.com>
Dean ahn <deanahn@gctsemi.com>

37
drivers/staging/gdm724x/gdm_endian.c
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@ -1,37 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved. */
#include <linux/kernel.h>
#include "gdm_endian.h"
__dev16 gdm_cpu_to_dev16(u8 dev_ed, u16 x)
{
if (dev_ed == ENDIANNESS_LITTLE)
return (__force __dev16)cpu_to_le16(x);
else
return (__force __dev16)cpu_to_be16(x);
}
u16 gdm_dev16_to_cpu(u8 dev_ed, __dev16 x)
{
if (dev_ed == ENDIANNESS_LITTLE)
return le16_to_cpu((__force __le16)x);
else
return be16_to_cpu((__force __be16)x);
}
__dev32 gdm_cpu_to_dev32(u8 dev_ed, u32 x)
{
if (dev_ed == ENDIANNESS_LITTLE)
return (__force __dev32)cpu_to_le32(x);
else
return (__force __dev32)cpu_to_be32(x);
}
u32 gdm_dev32_to_cpu(u8 dev_ed, __dev32 x)
{
if (dev_ed == ENDIANNESS_LITTLE)
return le32_to_cpu((__force __le32)x);
else
return be32_to_cpu((__force __be32)x);
}

30
drivers/staging/gdm724x/gdm_endian.h
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@ -1,30 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved. */
#ifndef __GDM_ENDIAN_H__
#define __GDM_ENDIAN_H__
#include <linux/types.h>
/*
* For data in "device-endian" byte order (device endianness is model
* dependent). Analogous to __leXX or __beXX.
*/
typedef __u32 __bitwise __dev32;
typedef __u16 __bitwise __dev16;
enum {
ENDIANNESS_MIN = 0,
ENDIANNESS_UNKNOWN,
ENDIANNESS_LITTLE,
ENDIANNESS_BIG,
ENDIANNESS_MIDDLE,
ENDIANNESS_MAX
};
__dev16 gdm_cpu_to_dev16(u8 dev_ed, u16 x);
u16 gdm_dev16_to_cpu(u8 dev_ed, __dev16 x);
__dev32 gdm_cpu_to_dev32(u8 dev_ed, u32 x);
u32 gdm_dev32_to_cpu(u8 dev_ed, __dev32 x);
#endif /*__GDM_ENDIAN_H__*/

937
drivers/staging/gdm724x/gdm_lte.c
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@ -1,937 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved. */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/etherdevice.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <linux/udp.h>
#include <linux/in.h>
#include <linux/if_arp.h>
#include <linux/if_ether.h>
#include <linux/if_vlan.h>
#include <linux/in6.h>
#include <linux/tcp.h>
#include <linux/icmp.h>
#include <linux/icmpv6.h>
#include <linux/uaccess.h>
#include <linux/errno.h>
#include <net/ndisc.h>
#include "gdm_lte.h"
#include "netlink_k.h"
#include "hci.h"
#include "hci_packet.h"
#include "gdm_endian.h"
/*
* Netlink protocol number
*/
#define NETLINK_LTE 30
/*
* Default MTU Size
*/
#define DEFAULT_MTU_SIZE 1500
#define IP_VERSION_4 4
#define IP_VERSION_6 6
static struct {
int ref_cnt;
struct sock *sock;
} lte_event;
static const struct device_type wwan_type = {
.name = "wwan",
};
static int gdm_lte_open(struct net_device *dev)
{
netif_start_queue(dev);
return 0;
}
static int gdm_lte_close(struct net_device *dev)
{
netif_stop_queue(dev);
return 0;
}
static int gdm_lte_set_config(struct net_device *dev, struct ifmap *map)
{
if (dev->flags & IFF_UP)
return -EBUSY;
return 0;
}
static void tx_complete(void *arg)
{
struct nic *nic = arg;
if (netif_queue_stopped(nic->netdev))
netif_wake_queue(nic->netdev);
}
static int gdm_lte_rx(struct sk_buff *skb, struct nic *nic, int nic_type)
{
int ret, len;
len = skb->len + ETH_HLEN;
ret = netif_rx(skb);
if (ret == NET_RX_DROP) {
nic->stats.rx_dropped++;
} else {
nic->stats.rx_packets++;
nic->stats.rx_bytes += len;
}
return 0;
}
static int gdm_lte_emulate_arp(struct sk_buff *skb_in, u32 nic_type)
{
struct nic *nic = netdev_priv(skb_in->dev);
struct sk_buff *skb_out;
struct ethhdr eth;
struct vlan_ethhdr vlan_eth;
struct arphdr *arp_in;
struct arphdr *arp_out;
struct arpdata {
u8 ar_sha[ETH_ALEN];
u8 ar_sip[4];
u8 ar_tha[ETH_ALEN];
u8 ar_tip[4];
};
struct arpdata *arp_data_in;
struct arpdata *arp_data_out;
u8 arp_temp[60];
void *mac_header_data;
u32 mac_header_len;
/* Check for skb->len, discard if empty */
if (skb_in->len == 0)
return -ENODATA;
/* Format the mac header so that it can be put to skb */
if (ntohs(((struct ethhdr *)skb_in->data)->h_proto) == ETH_P_8021Q) {
memcpy(&vlan_eth, skb_in->data, sizeof(struct vlan_ethhdr));
mac_header_data = &vlan_eth;
mac_header_len = VLAN_ETH_HLEN;
} else {
memcpy(&eth, skb_in->data, sizeof(struct ethhdr));
mac_header_data = &eth;
mac_header_len = ETH_HLEN;
}
/* Get the pointer of the original request */
arp_in = (struct arphdr *)(skb_in->data + mac_header_len);
arp_data_in = (struct arpdata *)(skb_in->data + mac_header_len +
sizeof(struct arphdr));
/* Get the pointer of the outgoing response */
arp_out = (struct arphdr *)arp_temp;
arp_data_out = (struct arpdata *)(arp_temp + sizeof(struct arphdr));
/* Copy the arp header */
memcpy(arp_out, arp_in, sizeof(struct arphdr));
arp_out->ar_op = htons(ARPOP_REPLY);
/* Copy the arp payload: based on 2 bytes of mac and fill the IP */
arp_data_out->ar_sha[0] = arp_data_in->ar_sha[0];
arp_data_out->ar_sha[1] = arp_data_in->ar_sha[1];
memcpy(&arp_data_out->ar_sha[2], &arp_data_in->ar_tip[0], 4);
memcpy(&arp_data_out->ar_sip[0], &arp_data_in->ar_tip[0], 4);
memcpy(&arp_data_out->ar_tha[0], &arp_data_in->ar_sha[0], 6);
memcpy(&arp_data_out->ar_tip[0], &arp_data_in->ar_sip[0], 4);
/* Fill the destination mac with source mac of the received packet */
memcpy(mac_header_data, mac_header_data + ETH_ALEN, ETH_ALEN);
/* Fill the source mac with nic's source mac */
memcpy(mac_header_data + ETH_ALEN, nic->src_mac_addr, ETH_ALEN);
/* Alloc skb and reserve align */
skb_out = dev_alloc_skb(skb_in->len);
if (!skb_out)
return -ENOMEM;
skb_reserve(skb_out, NET_IP_ALIGN);
skb_put_data(skb_out, mac_header_data, mac_header_len);
skb_put_data(skb_out, arp_out, sizeof(struct arphdr));
skb_put_data(skb_out, arp_data_out, sizeof(struct arpdata));
skb_out->protocol = ((struct ethhdr *)mac_header_data)->h_proto;
skb_out->dev = skb_in->dev;
skb_reset_mac_header(skb_out);
skb_pull(skb_out, ETH_HLEN);
gdm_lte_rx(skb_out, nic, nic_type);
return 0;
}
static __sum16 icmp6_checksum(struct ipv6hdr *ipv6, u16 *ptr, int len)
{
unsigned short *w;
__wsum sum = 0;
int i;
u16 pa;
union {
struct {
u8 ph_src[16];
u8 ph_dst[16];
u32 ph_len;
u8 ph_zero[3];
u8 ph_nxt;
} ph __packed;
u16 pa[20];
} pseudo_header;
memset(&pseudo_header, 0, sizeof(pseudo_header));
memcpy(&pseudo_header.ph.ph_src, &ipv6->saddr.in6_u.u6_addr8, 16);
memcpy(&pseudo_header.ph.ph_dst, &ipv6->daddr.in6_u.u6_addr8, 16);
pseudo_header.ph.ph_len = be16_to_cpu(ipv6->payload_len);
pseudo_header.ph.ph_nxt = ipv6->nexthdr;
for (i = 0; i < ARRAY_SIZE(pseudo_header.pa); i++) {
pa = pseudo_header.pa[i];
sum = csum_add(sum, csum_unfold((__force __sum16)pa));
}
w = ptr;
while (len > 1) {
sum = csum_add(sum, csum_unfold((__force __sum16)*w++));
len -= 2;
}
return csum_fold(sum);
}
static int gdm_lte_emulate_ndp(struct sk_buff *skb_in, u32 nic_type)
{
struct nic *nic = netdev_priv(skb_in->dev);
struct sk_buff *skb_out;
struct ethhdr eth;
struct vlan_ethhdr vlan_eth;
struct neighbour_advertisement {
u8 target_address[16];
u8 type;
u8 length;
u8 link_layer_address[6];
};
struct neighbour_advertisement na;
struct neighbour_solicitation {
u8 target_address[16];
};
struct neighbour_solicitation *ns;
struct ipv6hdr *ipv6_in;
struct ipv6hdr ipv6_out;
struct icmp6hdr *icmp6_in;
struct icmp6hdr icmp6_out;
void *mac_header_data;
u32 mac_header_len;
/* Format the mac header so that it can be put to skb */
if (ntohs(((struct ethhdr *)skb_in->data)->h_proto) == ETH_P_8021Q) {
memcpy(&vlan_eth, skb_in->data, sizeof(struct vlan_ethhdr));
if (ntohs(vlan_eth.h_vlan_encapsulated_proto) != ETH_P_IPV6)
return -EPROTONOSUPPORT;
mac_header_data = &vlan_eth;
mac_header_len = VLAN_ETH_HLEN;
} else {
memcpy(&eth, skb_in->data, sizeof(struct ethhdr));
if (ntohs(eth.h_proto) != ETH_P_IPV6)
return -EPROTONOSUPPORT;
mac_header_data = &eth;
mac_header_len = ETH_HLEN;
}
/* Check if this is IPv6 ICMP packet */
ipv6_in = (struct ipv6hdr *)(skb_in->data + mac_header_len);
if (ipv6_in->version != 6 || ipv6_in->nexthdr != IPPROTO_ICMPV6)
return -EPROTONOSUPPORT;
/* Check if this is NDP packet */
icmp6_in = (struct icmp6hdr *)(skb_in->data + mac_header_len +
sizeof(struct ipv6hdr));
if (icmp6_in->icmp6_type == NDISC_ROUTER_SOLICITATION) { /* Check RS */
return -EPROTONOSUPPORT;
} else if (icmp6_in->icmp6_type == NDISC_NEIGHBOUR_SOLICITATION) {
/* Check NS */
u8 icmp_na[sizeof(struct icmp6hdr) +
sizeof(struct neighbour_advertisement)];
u8 zero_addr8[16] = {0,};
if (memcmp(ipv6_in->saddr.in6_u.u6_addr8, zero_addr8, 16) == 0)
/* Duplicate Address Detection: Source IP is all zero */
return 0;
icmp6_out.icmp6_type = NDISC_NEIGHBOUR_ADVERTISEMENT;
icmp6_out.icmp6_code = 0;
icmp6_out.icmp6_cksum = 0;
/* R=0, S=1, O=1 */
icmp6_out.icmp6_dataun.un_data32[0] = htonl(0x60000000);
ns = (struct neighbour_solicitation *)
(skb_in->data + mac_header_len +
sizeof(struct ipv6hdr) + sizeof(struct icmp6hdr));
memcpy(&na.target_address, ns->target_address, 16);
na.type = 0x02;
na.length = 1;
na.link_layer_address[0] = 0x00;
na.link_layer_address[1] = 0x0a;
na.link_layer_address[2] = 0x3b;
na.link_layer_address[3] = 0xaf;
na.link_layer_address[4] = 0x63;
na.link_layer_address[5] = 0xc7;
memcpy(&ipv6_out, ipv6_in, sizeof(struct ipv6hdr));
memcpy(ipv6_out.saddr.in6_u.u6_addr8, &na.target_address, 16);
memcpy(ipv6_out.daddr.in6_u.u6_addr8,
ipv6_in->saddr.in6_u.u6_addr8, 16);
ipv6_out.payload_len = htons(sizeof(struct icmp6hdr) +
sizeof(struct neighbour_advertisement));
memcpy(icmp_na, &icmp6_out, sizeof(struct icmp6hdr));
memcpy(icmp_na + sizeof(struct icmp6hdr), &na,
sizeof(struct neighbour_advertisement));
icmp6_out.icmp6_cksum = icmp6_checksum(&ipv6_out,
(u16 *)icmp_na,
sizeof(icmp_na));
} else {
return -EINVAL;
}
/* Fill the destination mac with source mac of the received packet */
memcpy(mac_header_data, mac_header_data + ETH_ALEN, ETH_ALEN);
/* Fill the source mac with nic's source mac */
memcpy(mac_header_data + ETH_ALEN, nic->src_mac_addr, ETH_ALEN);
/* Alloc skb and reserve align */
skb_out = dev_alloc_skb(skb_in->len);
if (!skb_out)
return -ENOMEM;
skb_reserve(skb_out, NET_IP_ALIGN);
skb_put_data(skb_out, mac_header_data, mac_header_len);
skb_put_data(skb_out, &ipv6_out, sizeof(struct ipv6hdr));
skb_put_data(skb_out, &icmp6_out, sizeof(struct icmp6hdr));
skb_put_data(skb_out, &na, sizeof(struct neighbour_advertisement));
skb_out->protocol = ((struct ethhdr *)mac_header_data)->h_proto;
skb_out->dev = skb_in->dev;
skb_reset_mac_header(skb_out);
skb_pull(skb_out, ETH_HLEN);
gdm_lte_rx(skb_out, nic, nic_type);
return 0;
}
static s32 gdm_lte_tx_nic_type(struct net_device *dev, struct sk_buff *skb)
{
struct nic *nic = netdev_priv(dev);
struct ethhdr *eth;
struct vlan_ethhdr *vlan_eth;
struct iphdr *ip;
struct ipv6hdr *ipv6;
int mac_proto;
void *network_data;
u32 nic_type;
/* NIC TYPE is based on the nic_id of this net_device */
nic_type = 0x00000010 | nic->nic_id;
/* Get ethernet protocol */
eth = (struct ethhdr *)skb->data;
if (ntohs(eth->h_proto) == ETH_P_8021Q) {
vlan_eth = skb_vlan_eth_hdr(skb);
mac_proto = ntohs(vlan_eth->h_vlan_encapsulated_proto);
network_data = skb->data + VLAN_ETH_HLEN;
nic_type |= NIC_TYPE_F_VLAN;
} else {
mac_proto = ntohs(eth->h_proto);
network_data = skb->data + ETH_HLEN;
}
/* Process packet for nic type */
switch (mac_proto) {
case ETH_P_ARP:
nic_type |= NIC_TYPE_ARP;
break;
case ETH_P_IP:
nic_type |= NIC_TYPE_F_IPV4;
ip = network_data;
/* Check DHCPv4 */
if (ip->protocol == IPPROTO_UDP) {
struct udphdr *udp =
network_data + sizeof(struct iphdr);
if (ntohs(udp->dest) == 67 || ntohs(udp->dest) == 68)
nic_type |= NIC_TYPE_F_DHCP;
}
break;
case ETH_P_IPV6:
nic_type |= NIC_TYPE_F_IPV6;
ipv6 = network_data;
if (ipv6->nexthdr == IPPROTO_ICMPV6) /* Check NDP request */ {
struct icmp6hdr *icmp6 =
network_data + sizeof(struct ipv6hdr);
if (icmp6->icmp6_type == NDISC_NEIGHBOUR_SOLICITATION)
nic_type |= NIC_TYPE_ICMPV6;
} else if (ipv6->nexthdr == IPPROTO_UDP) /* Check DHCPv6 */ {
struct udphdr *udp =
network_data + sizeof(struct ipv6hdr);
if (ntohs(udp->dest) == 546 || ntohs(udp->dest) == 547)
nic_type |= NIC_TYPE_F_DHCP;
}
break;
default:
break;
}
return nic_type;
}
static netdev_tx_t gdm_lte_tx(struct sk_buff *skb, struct net_device *dev)
{
struct nic *nic = netdev_priv(dev);
u32 nic_type;
void *data_buf;
int data_len;
int idx;
int ret = 0;
nic_type = gdm_lte_tx_nic_type(dev, skb);
if (nic_type == 0) {
netdev_err(dev, "tx - invalid nic_type\n");
return -EMEDIUMTYPE;
}
if (nic_type & NIC_TYPE_ARP) {
if (gdm_lte_emulate_arp(skb, nic_type) == 0) {
dev_kfree_skb(skb);
return 0;
}
}
if (nic_type & NIC_TYPE_ICMPV6) {
if (gdm_lte_emulate_ndp(skb, nic_type) == 0) {
dev_kfree_skb(skb);
return 0;
}
}
/*
* Need byte shift (that is, remove VLAN tag) if there is one
* For the case of ARP, this breaks the offset as vlan_ethhdr+4
* is treated as ethhdr However, it shouldn't be a problem as
* the response starts from arp_hdr and ethhdr is created by this
* driver based on the NIC mac
*/
if (nic_type & NIC_TYPE_F_VLAN) {
struct vlan_ethhdr *vlan_eth = skb_vlan_eth_hdr(skb);
nic->vlan_id = ntohs(vlan_eth->h_vlan_TCI) & VLAN_VID_MASK;
data_buf = skb->data + (VLAN_ETH_HLEN - ETH_HLEN);
data_len = skb->len - (VLAN_ETH_HLEN - ETH_HLEN);
} else {
nic->vlan_id = 0;
data_buf = skb->data;
data_len = skb->len;
}
/* If it is a ICMPV6 packet, clear all the other bits :
* for backward compatibility with the firmware
*/
if (nic_type & NIC_TYPE_ICMPV6)
nic_type = NIC_TYPE_ICMPV6;
/* If it is not a dhcp packet, clear all the flag bits :
* original NIC, otherwise the special flag (IPVX | DHCP)
*/
if (!(nic_type & NIC_TYPE_F_DHCP))
nic_type &= NIC_TYPE_MASK;
ret = sscanf(dev->name, "lte%d", &idx);
if (ret != 1) {
dev_kfree_skb(skb);
return -EINVAL;
}
ret = nic->phy_dev->send_sdu_func(nic->phy_dev->priv_dev,
data_buf, data_len,
nic->pdn_table.dft_eps_id, 0,
tx_complete, nic, idx,
nic_type);
if (ret == TX_NO_BUFFER || ret == TX_NO_SPC) {
netif_stop_queue(dev);
if (ret == TX_NO_BUFFER)
ret = 0;
else
ret = -ENOSPC;
} else if (ret == TX_NO_DEV) {
ret = -ENODEV;
}
/* Updates tx stats */
if (ret) {
nic->stats.tx_dropped++;
} else {
nic->stats.tx_packets++;
nic->stats.tx_bytes += data_len;
}
dev_kfree_skb(skb);
return 0;
}
static struct net_device_stats *gdm_lte_stats(struct net_device *dev)
{
struct nic *nic = netdev_priv(dev);
return &nic->stats;
}
static int gdm_lte_event_send(struct net_device *dev, char *buf, int len)
{
struct phy_dev *phy_dev = ((struct nic *)netdev_priv(dev))->phy_dev;
struct hci_packet *hci = (struct hci_packet *)buf;
int length;
int idx;
int ret;
ret = sscanf(dev->name, "lte%d", &idx);
if (ret != 1)
return -EINVAL;
length = gdm_dev16_to_cpu(phy_dev->get_endian(phy_dev->priv_dev),
hci->len) + HCI_HEADER_SIZE;
return netlink_send(lte_event.sock, idx, 0, buf, length, dev);
}
static void gdm_lte_event_rcv(struct net_device *dev, u16 type,
void *msg, int len)
{
struct nic *nic = netdev_priv(dev);
nic->phy_dev->send_hci_func(nic->phy_dev->priv_dev, msg, len, NULL,
NULL);
}
int gdm_lte_event_init(void)
{
if (lte_event.ref_cnt == 0)
lte_event.sock = netlink_init(NETLINK_LTE, gdm_lte_event_rcv);
if (lte_event.sock) {
lte_event.ref_cnt++;
return 0;
}
pr_err("event init failed\n");
return -ENODATA;
}
void gdm_lte_event_exit(void)
{
if (lte_event.sock && --lte_event.ref_cnt == 0) {
sock_release(lte_event.sock->sk_socket);
lte_event.sock = NULL;
}
}
static int find_dev_index(u32 nic_type)
{
u8 index;
index = (u8)(nic_type & 0x0000000f);
if (index >= MAX_NIC_TYPE)
return -EINVAL;
return index;
}
static void gdm_lte_netif_rx(struct net_device *dev, char *buf,
int len, int flagged_nic_type)
{
u32 nic_type;
struct nic *nic;
struct sk_buff *skb;
struct ethhdr eth;
struct vlan_ethhdr vlan_eth;
void *mac_header_data;
u32 mac_header_len;
char ip_version = 0;
nic_type = flagged_nic_type & NIC_TYPE_MASK;
nic = netdev_priv(dev);
if (flagged_nic_type & NIC_TYPE_F_DHCP) {
/* Change the destination mac address
* with the one requested the IP
*/
if (flagged_nic_type & NIC_TYPE_F_IPV4) {
struct dhcp_packet {
u8 op; /* BOOTREQUEST or BOOTREPLY */
u8 htype; /* hardware address type.
* 1 = 10mb ethernet
*/
u8 hlen; /* hardware address length */
u8 hops; /* used by relay agents only */
u32 xid; /* unique id */
u16 secs; /* elapsed since client began
* acquisition/renewal
*/
u16 flags; /* only one flag so far: */
#define BROADCAST_FLAG 0x8000
/* "I need broadcast replies" */
u32 ciaddr; /* client IP (if client is in
* BOUND, RENEW or REBINDING state)
*/
u32 yiaddr; /* 'your' (client) IP address */
/* IP address of next server to use in
* bootstrap, returned in DHCPOFFER,
* DHCPACK by server
*/
u32 siaddr_nip;
u32 gateway_nip; /* relay agent IP address */
u8 chaddr[16]; /* link-layer client hardware
* address (MAC)
*/
u8 sname[64]; /* server host name (ASCIZ) */
u8 file[128]; /* boot file name (ASCIZ) */
u32 cookie; /* fixed first four option
* bytes (99,130,83,99 dec)
*/
} __packed;
int offset = sizeof(struct iphdr) +
sizeof(struct udphdr) +
offsetof(struct dhcp_packet, chaddr);
if (offset + ETH_ALEN > len)
return;
ether_addr_copy(nic->dest_mac_addr, buf + offset);
}
}
if (nic->vlan_id > 0) {
mac_header_data = (void *)&vlan_eth;
mac_header_len = VLAN_ETH_HLEN;
} else {
mac_header_data = (void *)&eth;
mac_header_len = ETH_HLEN;
}
/* Format the data so that it can be put to skb */
ether_addr_copy(mac_header_data, nic->dest_mac_addr);
memcpy(mac_header_data + ETH_ALEN, nic->src_mac_addr, ETH_ALEN);
vlan_eth.h_vlan_TCI = htons(nic->vlan_id);
vlan_eth.h_vlan_proto = htons(ETH_P_8021Q);
if (nic_type == NIC_TYPE_ARP) {
/* Should be response: Only happens because
* there was a request from the host
*/
eth.h_proto = htons(ETH_P_ARP);
vlan_eth.h_vlan_encapsulated_proto = htons(ETH_P_ARP);
} else {
ip_version = buf[0] >> 4;
if (ip_version == IP_VERSION_4) {
eth.h_proto = htons(ETH_P_IP);
vlan_eth.h_vlan_encapsulated_proto = htons(ETH_P_IP);
} else if (ip_version == IP_VERSION_6) {
eth.h_proto = htons(ETH_P_IPV6);
vlan_eth.h_vlan_encapsulated_proto = htons(ETH_P_IPV6);
} else {
netdev_err(dev, "Unknown IP version %d\n", ip_version);
return;
}
}
/* Alloc skb and reserve align */
skb = dev_alloc_skb(len + mac_header_len + NET_IP_ALIGN);
if (!skb)
return;
skb_reserve(skb, NET_IP_ALIGN);
skb_put_data(skb, mac_header_data, mac_header_len);
skb_put_data(skb, buf, len);
skb->protocol = ((struct ethhdr *)mac_header_data)->h_proto;
skb->dev = dev;
skb_reset_mac_header(skb);
skb_pull(skb, ETH_HLEN);
gdm_lte_rx(skb, nic, nic_type);
}
static void gdm_lte_multi_sdu_pkt(struct phy_dev *phy_dev, char *buf, int len)
{
struct net_device *dev;
struct multi_sdu *multi_sdu = (struct multi_sdu *)buf;
struct sdu *sdu = NULL;
u8 endian = phy_dev->get_endian(phy_dev->priv_dev);
u8 *data = (u8 *)multi_sdu->data;
int copied;
u16 i = 0;
u16 num_packet;
u16 hci_len;
u16 cmd_evt;
u32 nic_type;
int index;
num_packet = gdm_dev16_to_cpu(endian, multi_sdu->num_packet);
for (i = 0; i < num_packet; i++) {
copied = data - multi_sdu->data;
if (len < copied + sizeof(*sdu)) {
pr_err("rx prevent buffer overflow");
return;
}
sdu = (struct sdu *)data;
cmd_evt = gdm_dev16_to_cpu(endian, sdu->cmd_evt);
hci_len = gdm_dev16_to_cpu(endian, sdu->len);
nic_type = gdm_dev32_to_cpu(endian, sdu->nic_type);
if (cmd_evt != LTE_RX_SDU) {
pr_err("rx sdu wrong hci %04x\n", cmd_evt);
return;
}
if (hci_len < 12 ||
len < copied + sizeof(*sdu) + (hci_len - 12)) {
pr_err("rx sdu invalid len %d\n", hci_len);
return;
}
index = find_dev_index(nic_type);
if (index < 0) {
pr_err("rx sdu invalid nic_type :%x\n", nic_type);
return;
}
dev = phy_dev->dev[index];
gdm_lte_netif_rx(dev, (char *)sdu->data,
(int)(hci_len - 12), nic_type);
data += ((hci_len + 3) & 0xfffc) + HCI_HEADER_SIZE;
}
}
static void gdm_lte_pdn_table(struct net_device *dev, char *buf, int len)
{
struct nic *nic = netdev_priv(dev);
struct hci_pdn_table_ind *pdn_table = (struct hci_pdn_table_ind *)buf;
u8 ed = nic->phy_dev->get_endian(nic->phy_dev->priv_dev);
if (!pdn_table->activate) {
memset(&nic->pdn_table, 0x00, sizeof(struct pdn_table));
netdev_info(dev, "pdn deactivated\n");
return;
}
nic->pdn_table.activate = pdn_table->activate;
nic->pdn_table.dft_eps_id = gdm_dev32_to_cpu(ed, pdn_table->dft_eps_id);
nic->pdn_table.nic_type = gdm_dev32_to_cpu(ed, pdn_table->nic_type);
netdev_info(dev, "pdn activated, nic_type=0x%x\n",
nic->pdn_table.nic_type);
}
static int gdm_lte_receive_pkt(struct phy_dev *phy_dev, char *buf, int len)
{
struct hci_packet *hci = (struct hci_packet *)buf;
struct hci_pdn_table_ind *pdn_table = (struct hci_pdn_table_ind *)buf;
struct sdu *sdu;
struct net_device *dev;
u8 endian = phy_dev->get_endian(phy_dev->priv_dev);
int ret = 0;
u16 cmd_evt;
u32 nic_type;
int index;
if (!len)
return ret;
cmd_evt = gdm_dev16_to_cpu(endian, hci->cmd_evt);
dev = phy_dev->dev[0];
if (!dev)
return 0;
switch (cmd_evt) {
case LTE_RX_SDU:
sdu = (struct sdu *)hci->data;
nic_type = gdm_dev32_to_cpu(endian, sdu->nic_type);
index = find_dev_index(nic_type);
if (index < 0)
return index;
dev = phy_dev->dev[index];
gdm_lte_netif_rx(dev, hci->data, len, nic_type);
break;
case LTE_RX_MULTI_SDU:
gdm_lte_multi_sdu_pkt(phy_dev, buf, len);
break;
case LTE_LINK_ON_OFF_INDICATION:
netdev_info(dev, "link %s\n",
((struct hci_connect_ind *)buf)->connect
? "on" : "off");
break;
case LTE_PDN_TABLE_IND:
pdn_table = (struct hci_pdn_table_ind *)buf;
nic_type = gdm_dev32_to_cpu(endian, pdn_table->nic_type);
index = find_dev_index(nic_type);
if (index < 0)
return index;
dev = phy_dev->dev[index];
gdm_lte_pdn_table(dev, buf, len);
fallthrough;
default:
ret = gdm_lte_event_send(dev, buf, len);
break;
}
return ret;
}
static int rx_complete(void *arg, void *data, int len, int context)
{
struct phy_dev *phy_dev = arg;
return gdm_lte_receive_pkt(phy_dev, data, len);
}
void start_rx_proc(struct phy_dev *phy_dev)
{
int i;
for (i = 0; i < MAX_RX_SUBMIT_COUNT; i++)
phy_dev->rcv_func(phy_dev->priv_dev,
rx_complete, phy_dev, USB_COMPLETE);
}
static const struct net_device_ops gdm_netdev_ops = {
.ndo_open = gdm_lte_open,
.ndo_stop = gdm_lte_close,
.ndo_set_config = gdm_lte_set_config,
.ndo_start_xmit = gdm_lte_tx,
.ndo_get_stats = gdm_lte_stats,
};
static u8 gdm_lte_macaddr[ETH_ALEN] = {0x00, 0x0a, 0x3b, 0x00, 0x00, 0x00};
static void form_mac_address(u8 *dev_addr, u8 *nic_src, u8 *nic_dest,
u8 *mac_address, u8 index)
{
/* Form the dev_addr */
if (!mac_address)
ether_addr_copy(dev_addr, gdm_lte_macaddr);
else
ether_addr_copy(dev_addr, mac_address);
/* The last byte of the mac address
* should be less than or equal to 0xFC
*/
dev_addr[ETH_ALEN - 1] += index;
/* Create random nic src and copy the first
* 3 bytes to be the same as dev_addr
*/
eth_random_addr(nic_src);
memcpy(nic_src, dev_addr, 3);
/* Copy the nic_dest from dev_addr*/
ether_addr_copy(nic_dest, dev_addr);
}
static void validate_mac_address(u8 *mac_address)
{
/* if zero address or multicast bit set, restore the default value */
if (is_zero_ether_addr(mac_address) || (mac_address[0] & 0x01)) {
pr_err("MAC invalid, restoring default\n");
memcpy(mac_address, gdm_lte_macaddr, 6);
}
}
int register_lte_device(struct phy_dev *phy_dev,
struct device *dev, u8 *mac_address)
{
struct nic *nic;
struct net_device *net;
char pdn_dev_name[16];
u8 addr[ETH_ALEN];
int ret = 0;
u8 index;
validate_mac_address(mac_address);
for (index = 0; index < MAX_NIC_TYPE; index++) {
/* Create device name lteXpdnX */
sprintf(pdn_dev_name, "lte%%dpdn%d", index);
/* Allocate netdev */
net = alloc_netdev(sizeof(struct nic), pdn_dev_name,
NET_NAME_UNKNOWN, ether_setup);
if (!net) {
ret = -ENOMEM;
goto err;
}
net->netdev_ops = &gdm_netdev_ops;
net->flags &= ~IFF_MULTICAST;
net->mtu = DEFAULT_MTU_SIZE;
nic = netdev_priv(net);
memset(nic, 0, sizeof(struct nic));
nic->netdev = net;
nic->phy_dev = phy_dev;
nic->nic_id = index;
form_mac_address(addr,
nic->src_mac_addr,
nic->dest_mac_addr,
mac_address,
index);
eth_hw_addr_set(net, addr);
SET_NETDEV_DEV(net, dev);
SET_NETDEV_DEVTYPE(net, &wwan_type);
ret = register_netdev(net);
if (ret)
goto err;
netif_carrier_on(net);
phy_dev->dev[index] = net;
}
return 0;
err:
unregister_lte_device(phy_dev);
return ret;
}
void unregister_lte_device(struct phy_dev *phy_dev)
{
struct net_device *net;
int index;
for (index = 0; index < MAX_NIC_TYPE; index++) {
net = phy_dev->dev[index];
if (!net)
continue;
unregister_netdev(net);
free_netdev(net);
}
}

71
drivers/staging/gdm724x/gdm_lte.h
View File

@ -1,71 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved. */
#ifndef _GDM_LTE_H_
#define _GDM_LTE_H_
#include <linux/netdevice.h>
#include <linux/types.h>
#include "gdm_endian.h"
#define MAX_NIC_TYPE 4
#define MAX_RX_SUBMIT_COUNT 3
#define DRIVER_VERSION "3.7.17.0"
enum TX_ERROR_CODE {
TX_NO_ERROR = 0,
TX_NO_DEV,
TX_NO_SPC,
TX_NO_BUFFER,
};
enum CALLBACK_CONTEXT {
KERNEL_THREAD = 0,
USB_COMPLETE,
};
struct pdn_table {
u8 activate;
u32 dft_eps_id;
u32 nic_type;
} __packed;
struct nic;
struct phy_dev {
void *priv_dev;
struct net_device *dev[MAX_NIC_TYPE];
int (*send_hci_func)(void *priv_dev, void *data, int len,
void (*cb)(void *cb_data), void *cb_data);
int (*send_sdu_func)(void *priv_dev, void *data, int len,
unsigned int dft_eps_id, unsigned int eps_id,
void (*cb)(void *cb_data), void *cb_data,
int dev_idx, int nic_type);
int (*rcv_func)(void *priv_dev,
int (*cb)(void *cb_data, void *data, int len,
int context),
void *cb_data, int context);
u8 (*get_endian)(void *priv_dev);
};
struct nic {
struct net_device *netdev;
struct phy_dev *phy_dev;
struct net_device_stats stats;
struct pdn_table pdn_table;
u8 dest_mac_addr[ETH_ALEN];
u8 src_mac_addr[ETH_ALEN];
u32 nic_id;
u16 vlan_id;
};
int gdm_lte_event_init(void);
void gdm_lte_event_exit(void);
void start_rx_proc(struct phy_dev *phy_dev);
int register_lte_device(struct phy_dev *phy_dev, struct device *dev,
u8 *mac_address);
void unregister_lte_device(struct phy_dev *phy_dev);
#endif /* _GDM_LTE_H_ */

668
drivers/staging/gdm724x/gdm_mux.c
View File

@ -1,668 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved. */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/usb.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/slab.h>
#include <linux/usb/cdc.h>
#include "gdm_mux.h"
static u16 packet_type_for_tty_index[TTY_MAX_COUNT] = {0xF011, 0xF010};
#define USB_DEVICE_CDC_DATA(vid, pid) \
.match_flags = \
USB_DEVICE_ID_MATCH_DEVICE |\
USB_DEVICE_ID_MATCH_INT_CLASS |\
USB_DEVICE_ID_MATCH_INT_SUBCLASS,\
.idVendor = vid,\
.idProduct = pid,\
.bInterfaceClass = USB_CLASS_COMM,\
.bInterfaceSubClass = USB_CDC_SUBCLASS_ACM
static const struct usb_device_id id_table[] = {
{ USB_DEVICE_CDC_DATA(0x1076, 0x8000) }, /* GCT GDM7240 */
{ USB_DEVICE_CDC_DATA(0x1076, 0x8f00) }, /* GCT GDM7243 */
{ USB_DEVICE_CDC_DATA(0x1076, 0x9000) }, /* GCT GDM7243 */
{ USB_DEVICE_CDC_DATA(0x1d74, 0x2300) }, /* LGIT Phoenix */
{}
};
MODULE_DEVICE_TABLE(usb, id_table);
static int packet_type_to_tty_index(u16 packet_type)
{
int i;
for (i = 0; i < TTY_MAX_COUNT; i++) {
if (packet_type_for_tty_index[i] == packet_type)
return i;
}
return -ENOENT;
}
static struct mux_tx *alloc_mux_tx(int len)
{
struct mux_tx *t;
t = kzalloc(sizeof(*t), GFP_ATOMIC);
if (!t)
return NULL;
t->urb = usb_alloc_urb(0, GFP_ATOMIC);
t->buf = kmalloc(MUX_TX_MAX_SIZE, GFP_ATOMIC);
if (!t->urb || !t->buf) {
usb_free_urb(t->urb);
kfree(t->buf);
kfree(t);
return NULL;
}
return t;
}
static void free_mux_tx(struct mux_tx *t)
{
if (t) {
usb_free_urb(t->urb);
kfree(t->buf);
kfree(t);
}
}
static struct mux_rx *alloc_mux_rx(void)
{
struct mux_rx *r;
r = kzalloc(sizeof(*r), GFP_KERNEL);
if (!r)
return NULL;
r->urb = usb_alloc_urb(0, GFP_KERNEL);
r->buf = kmalloc(MUX_RX_MAX_SIZE, GFP_KERNEL);
if (!r->urb || !r->buf) {
usb_free_urb(r->urb);
kfree(r->buf);
kfree(r);
return NULL;
}
return r;
}
static void free_mux_rx(struct mux_rx *r)
{
if (r) {
usb_free_urb(r->urb);
kfree(r->buf);
kfree(r);
}
}
static struct mux_rx *get_rx_struct(struct rx_cxt *rx)
{
struct mux_rx *r;
unsigned long flags;
spin_lock_irqsave(&rx->free_list_lock, flags);
if (list_empty(&rx->rx_free_list)) {
spin_unlock_irqrestore(&rx->free_list_lock, flags);
return NULL;
}
r = list_entry(rx->rx_free_list.prev, struct mux_rx, free_list);
list_del(&r->free_list);
spin_unlock_irqrestore(&rx->free_list_lock, flags);
return r;
}
static void put_rx_struct(struct rx_cxt *rx, struct mux_rx *r)
{
unsigned long flags;
spin_lock_irqsave(&rx->free_list_lock, flags);
list_add_tail(&r->free_list, &rx->rx_free_list);
spin_unlock_irqrestore(&rx->free_list_lock, flags);
}
static int up_to_host(struct mux_rx *r)
{
struct mux_dev *mux_dev = r->mux_dev;
struct mux_pkt_header *mux_header;
unsigned int start_flag;
unsigned int payload_size;
unsigned short packet_type;
int total_len;
u32 packet_size_sum = r->offset;
int index;
int ret = TO_HOST_INVALID_PACKET;
int len = r->len;
while (1) {
mux_header = (struct mux_pkt_header *)(r->buf +
packet_size_sum);
start_flag = __le32_to_cpu(mux_header->start_flag);
payload_size = __le32_to_cpu(mux_header->payload_size);
packet_type = __le16_to_cpu(mux_header->packet_type);
if (start_flag != START_FLAG) {
pr_err("invalid START_FLAG %x\n", start_flag);
break;
}
total_len = ALIGN(MUX_HEADER_SIZE + payload_size, 4);
if (len - packet_size_sum < total_len) {
pr_err("invalid payload : %d %d %04x\n",
payload_size, len, packet_type);
break;
}
index = packet_type_to_tty_index(packet_type);
if (index < 0) {
pr_err("invalid index %d\n", index);
break;
}
ret = r->callback(mux_header->data,
payload_size,
index,
mux_dev->tty_dev,
RECV_PACKET_PROCESS_CONTINUE
);
if (ret == TO_HOST_BUFFER_REQUEST_FAIL) {
r->offset += packet_size_sum;
break;
}
packet_size_sum += total_len;
if (len - packet_size_sum <= MUX_HEADER_SIZE + 2) {
ret = r->callback(NULL,
0,
index,
mux_dev->tty_dev,
RECV_PACKET_PROCESS_COMPLETE
);
break;
}
}
return ret;
}
static void do_rx(struct work_struct *work)
{
struct mux_dev *mux_dev =
container_of(work, struct mux_dev, work_rx.work);
struct mux_rx *r;
struct rx_cxt *rx = &mux_dev->rx;
unsigned long flags;
int ret = 0;
while (1) {
spin_lock_irqsave(&rx->to_host_lock, flags);
if (list_empty(&rx->to_host_list)) {
spin_unlock_irqrestore(&rx->to_host_lock, flags);
break;
}
r = list_entry(rx->to_host_list.next, struct mux_rx,
to_host_list);
list_del(&r->to_host_list);
spin_unlock_irqrestore(&rx->to_host_lock, flags);
ret = up_to_host(r);
if (ret == TO_HOST_BUFFER_REQUEST_FAIL)
pr_err("failed to send mux data to host\n");
else
put_rx_struct(rx, r);
}
}
static void remove_rx_submit_list(struct mux_rx *r, struct rx_cxt *rx)
{
unsigned long flags;
struct mux_rx *r_remove, *r_remove_next;
spin_lock_irqsave(&rx->submit_list_lock, flags);
list_for_each_entry_safe(r_remove, r_remove_next, &rx->rx_submit_list,
rx_submit_list) {
if (r == r_remove)
list_del(&r->rx_submit_list);
}
spin_unlock_irqrestore(&rx->submit_list_lock, flags);
}
static void gdm_mux_rcv_complete(struct urb *urb)
{
struct mux_rx *r = urb->context;
struct mux_dev *mux_dev = r->mux_dev;
struct rx_cxt *rx = &mux_dev->rx;
unsigned long flags;
remove_rx_submit_list(r, rx);
if (urb->status) {
if (mux_dev->usb_state == PM_NORMAL)
dev_err(&urb->dev->dev, "%s: urb status error %d\n",
__func__, urb->status);
put_rx_struct(rx, r);
} else {
r->len = r->urb->actual_length;
spin_lock_irqsave(&rx->to_host_lock, flags);
list_add_tail(&r->to_host_list, &rx->to_host_list);
schedule_work(&mux_dev->work_rx.work);
spin_unlock_irqrestore(&rx->to_host_lock, flags);
}
}
static int gdm_mux_recv(void *priv_dev,
int (*cb)(void *data, int len, int tty_index,
struct tty_dev *tty_dev, int complete))
{
struct mux_dev *mux_dev = priv_dev;
struct usb_device *usbdev = mux_dev->usbdev;
struct mux_rx *r;
struct rx_cxt *rx = &mux_dev->rx;
unsigned long flags;
int ret;
if (!usbdev) {
pr_err("device is disconnected\n");
return -ENODEV;
}
r = get_rx_struct(rx);
if (!r) {
pr_err("get_rx_struct fail\n");
return -ENOMEM;
}
r->offset = 0;
r->mux_dev = (void *)mux_dev;
r->callback = cb;
mux_dev->rx_cb = cb;
usb_fill_bulk_urb(r->urb,
usbdev,
usb_rcvbulkpipe(usbdev, 0x86),
r->buf,
MUX_RX_MAX_SIZE,
gdm_mux_rcv_complete,
r);
spin_lock_irqsave(&rx->submit_list_lock, flags);
list_add_tail(&r->rx_submit_list, &rx->rx_submit_list);
spin_unlock_irqrestore(&rx->submit_list_lock, flags);
ret = usb_submit_urb(r->urb, GFP_KERNEL);
if (ret) {
spin_lock_irqsave(&rx->submit_list_lock, flags);
list_del(&r->rx_submit_list);
spin_unlock_irqrestore(&rx->submit_list_lock, flags);
put_rx_struct(rx, r);
pr_err("usb_submit_urb ret=%d\n", ret);
}
usb_mark_last_busy(usbdev);
return ret;
}
static void gdm_mux_send_complete(struct urb *urb)
{
struct mux_tx *t = urb->context;
if (urb->status == -ECONNRESET) {
dev_info(&urb->dev->dev, "CONNRESET\n");
free_mux_tx(t);
return;
}
if (t->callback)
t->callback(t->cb_data);
free_mux_tx(t);
}
static int gdm_mux_send(void *priv_dev, void *data, int len, int tty_index,
void (*cb)(void *data), void *cb_data)
{
struct mux_dev *mux_dev = priv_dev;
struct usb_device *usbdev = mux_dev->usbdev;
struct mux_pkt_header *mux_header;
struct mux_tx *t = NULL;
static u32 seq_num = 1;
int total_len;
int ret;
unsigned long flags;
if (mux_dev->usb_state == PM_SUSPEND) {
ret = usb_autopm_get_interface(mux_dev->intf);
if (!ret)
usb_autopm_put_interface(mux_dev->intf);
}
spin_lock_irqsave(&mux_dev->write_lock, flags);
total_len = ALIGN(MUX_HEADER_SIZE + len, 4);
t = alloc_mux_tx(total_len);
if (!t) {
pr_err("alloc_mux_tx fail\n");
spin_unlock_irqrestore(&mux_dev->write_lock, flags);
return -ENOMEM;
}
mux_header = (struct mux_pkt_header *)t->buf;
mux_header->start_flag = __cpu_to_le32(START_FLAG);
mux_header->seq_num = __cpu_to_le32(seq_num++);
mux_header->payload_size = __cpu_to_le32((u32)len);
mux_header->packet_type = __cpu_to_le16(packet_type_for_tty_index[tty_index]);
memcpy(t->buf + MUX_HEADER_SIZE, data, len);
memset(t->buf + MUX_HEADER_SIZE + len, 0,
total_len - MUX_HEADER_SIZE - len);
t->len = total_len;
t->callback = cb;
t->cb_data = cb_data;
usb_fill_bulk_urb(t->urb,
usbdev,
usb_sndbulkpipe(usbdev, 5),
t->buf,
total_len,
gdm_mux_send_complete,
t);
ret = usb_submit_urb(t->urb, GFP_ATOMIC);
spin_unlock_irqrestore(&mux_dev->write_lock, flags);
if (ret)
pr_err("usb_submit_urb Error: %d\n", ret);
usb_mark_last_busy(usbdev);
return ret;
}
static int gdm_mux_send_control(void *priv_dev, int request, int value,
void *buf, int len)
{
struct mux_dev *mux_dev = priv_dev;
struct usb_device *usbdev = mux_dev->usbdev;
int ret;
ret = usb_control_msg(usbdev,
usb_sndctrlpipe(usbdev, 0),
request,
USB_RT_ACM,
value,
2,
buf,
len,
5000
);
if (ret < 0)
pr_err("usb_control_msg error: %d\n", ret);
return min(ret, 0);
}
static void release_usb(struct mux_dev *mux_dev)
{
struct rx_cxt *rx = &mux_dev->rx;
struct mux_rx *r, *r_next;
unsigned long flags;
cancel_delayed_work(&mux_dev->work_rx);
spin_lock_irqsave(&rx->submit_list_lock, flags);
list_for_each_entry_safe(r, r_next, &rx->rx_submit_list,
rx_submit_list) {
spin_unlock_irqrestore(&rx->submit_list_lock, flags);
usb_kill_urb(r->urb);
spin_lock_irqsave(&rx->submit_list_lock, flags);
}
spin_unlock_irqrestore(&rx->submit_list_lock, flags);
spin_lock_irqsave(&rx->free_list_lock, flags);
list_for_each_entry_safe(r, r_next, &rx->rx_free_list, free_list) {
list_del(&r->free_list);
free_mux_rx(r);
}
spin_unlock_irqrestore(&rx->free_list_lock, flags);
spin_lock_irqsave(&rx->to_host_lock, flags);
list_for_each_entry_safe(r, r_next, &rx->to_host_list, to_host_list) {
if (r->mux_dev == (void *)mux_dev) {
list_del(&r->to_host_list);
free_mux_rx(r);
}
}
spin_unlock_irqrestore(&rx->to_host_lock, flags);
}
static int init_usb(struct mux_dev *mux_dev)
{
struct mux_rx *r;
struct rx_cxt *rx = &mux_dev->rx;
int ret = 0;
int i;
spin_lock_init(&mux_dev->write_lock);
INIT_LIST_HEAD(&rx->to_host_list);
INIT_LIST_HEAD(&rx->rx_submit_list);
INIT_LIST_HEAD(&rx->rx_free_list);
spin_lock_init(&rx->to_host_lock);
spin_lock_init(&rx->submit_list_lock);
spin_lock_init(&rx->free_list_lock);
for (i = 0; i < MAX_ISSUE_NUM * 2; i++) {
r = alloc_mux_rx();
if (!r) {
ret = -ENOMEM;
break;
}
list_add(&r->free_list, &rx->rx_free_list);
}
INIT_DELAYED_WORK(&mux_dev->work_rx, do_rx);
return ret;
}
static int gdm_mux_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct mux_dev *mux_dev;
struct tty_dev *tty_dev;
u16 idVendor, idProduct;
int bInterfaceNumber;
int ret;
int i;
struct usb_device *usbdev = interface_to_usbdev(intf);
bInterfaceNumber = intf->cur_altsetting->desc.bInterfaceNumber;
idVendor = __le16_to_cpu(usbdev->descriptor.idVendor);
idProduct = __le16_to_cpu(usbdev->descriptor.idProduct);
pr_info("mux vid = 0x%04x pid = 0x%04x\n", idVendor, idProduct);
if (bInterfaceNumber != 2)
return -ENODEV;
mux_dev = kzalloc(sizeof(*mux_dev), GFP_KERNEL);
if (!mux_dev)
return -ENOMEM;
tty_dev = kzalloc(sizeof(*tty_dev), GFP_KERNEL);
if (!tty_dev) {
ret = -ENOMEM;
goto err_free_mux;
}
mux_dev->usbdev = usbdev;
mux_dev->control_intf = intf;
ret = init_usb(mux_dev);
if (ret)
goto err_free_usb;
tty_dev->priv_dev = (void *)mux_dev;
tty_dev->send_func = gdm_mux_send;
tty_dev->recv_func = gdm_mux_recv;
tty_dev->send_control = gdm_mux_send_control;
ret = register_lte_tty_device(tty_dev, &intf->dev);
if (ret)
goto err_unregister_tty;
for (i = 0; i < TTY_MAX_COUNT; i++)
mux_dev->tty_dev = tty_dev;
mux_dev->intf = intf;
mux_dev->usb_state = PM_NORMAL;
usb_get_dev(usbdev);
usb_set_intfdata(intf, tty_dev);
return 0;
err_unregister_tty:
unregister_lte_tty_device(tty_dev);
err_free_usb:
release_usb(mux_dev);
kfree(tty_dev);
err_free_mux:
kfree(mux_dev);
return ret;
}
static void gdm_mux_disconnect(struct usb_interface *intf)
{
struct tty_dev *tty_dev;
struct mux_dev *mux_dev;
struct usb_device *usbdev = interface_to_usbdev(intf);
tty_dev = usb_get_intfdata(intf);
mux_dev = tty_dev->priv_dev;
release_usb(mux_dev);
unregister_lte_tty_device(tty_dev);
kfree(mux_dev);
kfree(tty_dev);
usb_put_dev(usbdev);
}
static int gdm_mux_suspend(struct usb_interface *intf, pm_message_t pm_msg)
{
struct tty_dev *tty_dev;
struct mux_dev *mux_dev;
struct rx_cxt *rx;
struct mux_rx *r, *r_next;
unsigned long flags;
tty_dev = usb_get_intfdata(intf);
mux_dev = tty_dev->priv_dev;
rx = &mux_dev->rx;
cancel_work_sync(&mux_dev->work_rx.work);
if (mux_dev->usb_state != PM_NORMAL) {
dev_err(intf->usb_dev, "usb suspend - invalid state\n");
return -EINVAL;
}
mux_dev->usb_state = PM_SUSPEND;
spin_lock_irqsave(&rx->submit_list_lock, flags);
list_for_each_entry_safe(r, r_next, &rx->rx_submit_list,
rx_submit_list) {
spin_unlock_irqrestore(&rx->submit_list_lock, flags);
usb_kill_urb(r->urb);
spin_lock_irqsave(&rx->submit_list_lock, flags);
}
spin_unlock_irqrestore(&rx->submit_list_lock, flags);
return 0;
}
static int gdm_mux_resume(struct usb_interface *intf)
{
struct tty_dev *tty_dev;
struct mux_dev *mux_dev;
u8 i;
tty_dev = usb_get_intfdata(intf);
mux_dev = tty_dev->priv_dev;
if (mux_dev->usb_state != PM_SUSPEND) {
dev_err(intf->usb_dev, "usb resume - invalid state\n");
return -EINVAL;
}
mux_dev->usb_state = PM_NORMAL;
for (i = 0; i < MAX_ISSUE_NUM; i++)
gdm_mux_recv(mux_dev, mux_dev->rx_cb);
return 0;
}
static struct usb_driver gdm_mux_driver = {
.name = "gdm_mux",
.probe = gdm_mux_probe,
.disconnect = gdm_mux_disconnect,
.id_table = id_table,
.supports_autosuspend = 1,
.suspend = gdm_mux_suspend,
.resume = gdm_mux_resume,
.reset_resume = gdm_mux_resume,
};
static int __init gdm_usb_mux_init(void)
{
int ret;
ret = register_lte_tty_driver();
if (ret)
return ret;
return usb_register(&gdm_mux_driver);
}
static void __exit gdm_usb_mux_exit(void)
{
usb_deregister(&gdm_mux_driver);
unregister_lte_tty_driver();
}
module_init(gdm_usb_mux_init);
module_exit(gdm_usb_mux_exit);
MODULE_DESCRIPTION("GCT LTE TTY Device Driver");
MODULE_LICENSE("GPL");

85
drivers/staging/gdm724x/gdm_mux.h
View File

@ -1,85 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved. */
#ifndef _GDM_MUX_H_
#define _GDM_MUX_H_
#include <linux/types.h>
#include <linux/usb.h>
#include <linux/list.h>
#include "gdm_tty.h"
#define PM_NORMAL 0
#define PM_SUSPEND 1
#define USB_RT_ACM (USB_TYPE_CLASS | USB_RECIP_INTERFACE)
#define START_FLAG 0xA512485A
#define MUX_HEADER_SIZE 14
#define MUX_TX_MAX_SIZE (1024 * 10)
#define MUX_RX_MAX_SIZE (1024 * 30)
#define AT_PKT_TYPE 0xF011
#define DM_PKT_TYPE 0xF010
#define RETRY_TIMER 30 /* msec */
struct mux_pkt_header {
__le32 start_flag;
__le32 seq_num;
__le32 payload_size;
__le16 packet_type;
unsigned char data[];
};
struct mux_tx {
struct urb *urb;
u8 *buf;
int len;
void (*callback)(void *cb_data);
void *cb_data;
};
struct mux_rx {
struct list_head free_list;
struct list_head rx_submit_list;
struct list_head to_host_list;
struct urb *urb;
u8 *buf;
void *mux_dev;
u32 offset;
u32 len;
int (*callback)(void *data,
int len,
int tty_index,
struct tty_dev *tty_dev,
int complete);
};
struct rx_cxt {
struct list_head to_host_list;
struct list_head rx_submit_list;
struct list_head rx_free_list;
spinlock_t to_host_lock;
spinlock_t submit_list_lock;
spinlock_t free_list_lock;
};
struct mux_dev {
struct usb_device *usbdev;
struct usb_interface *control_intf;
struct usb_interface *data_intf;
struct rx_cxt rx;
struct delayed_work work_rx;
struct usb_interface *intf;
int usb_state;
int (*rx_cb)(void *data,
int len,
int tty_index,
struct tty_dev *tty_dev,
int complete);
spinlock_t write_lock;
struct tty_dev *tty_dev;
};
#endif /* _GDM_MUX_H_ */

316
drivers/staging/gdm724x/gdm_tty.c
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@ -1,316 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved. */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/usb/cdc.h>
#include <linux/serial.h>
#include "gdm_tty.h"
#define GDM_TTY_MAJOR 0
#define GDM_TTY_MINOR 32
#define WRITE_SIZE 2048
#define MUX_TX_MAX_SIZE 2048
static inline bool gdm_tty_ready(struct gdm *gdm)
{
return gdm && gdm->tty_dev && gdm->port.count;
}
static struct tty_driver *gdm_driver[TTY_MAX_COUNT];
static struct gdm *gdm_table[TTY_MAX_COUNT][GDM_TTY_MINOR];
static DEFINE_MUTEX(gdm_table_lock);
static const char *DRIVER_STRING[TTY_MAX_COUNT] = {"GCTATC", "GCTDM"};
static char *DEVICE_STRING[TTY_MAX_COUNT] = {"GCT-ATC", "GCT-DM"};
static void gdm_port_destruct(struct tty_port *port)
{
struct gdm *gdm = container_of(port, struct gdm, port);
mutex_lock(&gdm_table_lock);
gdm_table[gdm->index][gdm->minor] = NULL;
mutex_unlock(&gdm_table_lock);
kfree(gdm);
}
static const struct tty_port_operations gdm_port_ops = {
.destruct = gdm_port_destruct,
};
static int gdm_tty_install(struct tty_driver *driver, struct tty_struct *tty)
{
struct gdm *gdm = NULL;
int ret;
ret = match_string(DRIVER_STRING, TTY_MAX_COUNT,
tty->driver->driver_name);
if (ret < 0)
return -ENODEV;
mutex_lock(&gdm_table_lock);
gdm = gdm_table[ret][tty->index];
if (!gdm) {
mutex_unlock(&gdm_table_lock);
return -ENODEV;
}
tty_port_get(&gdm->port);
ret = tty_standard_install(driver, tty);
if (ret) {
tty_port_put(&gdm->port);
mutex_unlock(&gdm_table_lock);
return ret;
}
tty->driver_data = gdm;
mutex_unlock(&gdm_table_lock);
return 0;
}
static int gdm_tty_open(struct tty_struct *tty, struct file *filp)
{
struct gdm *gdm = tty->driver_data;
return tty_port_open(&gdm->port, tty, filp);
}
static void gdm_tty_cleanup(struct tty_struct *tty)
{
struct gdm *gdm = tty->driver_data;
tty_port_put(&gdm->port);
}
static void gdm_tty_hangup(struct tty_struct *tty)
{
struct gdm *gdm = tty->driver_data;
tty_port_hangup(&gdm->port);
}
static void gdm_tty_close(struct tty_struct *tty, struct file *filp)
{
struct gdm *gdm = tty->driver_data;
tty_port_close(&gdm->port, tty, filp);
}
static int gdm_tty_recv_complete(void *data,
int len,
int index,
struct tty_dev *tty_dev,
int complete)
{
struct gdm *gdm = tty_dev->gdm[index];
if (!gdm_tty_ready(gdm)) {
if (complete == RECV_PACKET_PROCESS_COMPLETE)
gdm->tty_dev->recv_func(gdm->tty_dev->priv_dev,
gdm_tty_recv_complete);
return TO_HOST_PORT_CLOSE;
}
if (data && len) {
if (tty_buffer_request_room(&gdm->port, len) == len) {
tty_insert_flip_string(&gdm->port, data, len);
tty_flip_buffer_push(&gdm->port);
} else {
return TO_HOST_BUFFER_REQUEST_FAIL;
}
}
if (complete == RECV_PACKET_PROCESS_COMPLETE)
gdm->tty_dev->recv_func(gdm->tty_dev->priv_dev,
gdm_tty_recv_complete);
return 0;
}
static void gdm_tty_send_complete(void *arg)
{
struct gdm *gdm = arg;
if (!gdm_tty_ready(gdm))
return;
tty_port_tty_wakeup(&gdm->port);
}
static ssize_t gdm_tty_write(struct tty_struct *tty, const u8 *buf, size_t len)
{
struct gdm *gdm = tty->driver_data;
size_t remain = len;
size_t sent_len = 0;
if (!gdm_tty_ready(gdm))
return -ENODEV;
while (remain) {
size_t sending_len = min_t(size_t, MUX_TX_MAX_SIZE, remain);
gdm->tty_dev->send_func(gdm->tty_dev->priv_dev,
(void *)(buf + sent_len),
sending_len,
gdm->index,
gdm_tty_send_complete,
gdm);
sent_len += sending_len;
remain -= sending_len;
}
return len;
}
static unsigned int gdm_tty_write_room(struct tty_struct *tty)
{
struct gdm *gdm = tty->driver_data;
if (!gdm_tty_ready(gdm))
return 0;
return WRITE_SIZE;
}
int register_lte_tty_device(struct tty_dev *tty_dev, struct device *device)
{
struct gdm *gdm;
int i;
int j;
for (i = 0; i < TTY_MAX_COUNT; i++) {
gdm = kmalloc(sizeof(*gdm), GFP_KERNEL);
if (!gdm)
return -ENOMEM;
mutex_lock(&gdm_table_lock);
for (j = 0; j < GDM_TTY_MINOR; j++) {
if (!gdm_table[i][j])
break;
}
if (j == GDM_TTY_MINOR) {
kfree(gdm);
mutex_unlock(&gdm_table_lock);
return -EINVAL;
}
gdm_table[i][j] = gdm;
mutex_unlock(&gdm_table_lock);
tty_dev->gdm[i] = gdm;
tty_port_init(&gdm->port);
gdm->port.ops = &gdm_port_ops;
gdm->index = i;
gdm->minor = j;
gdm->tty_dev = tty_dev;
tty_port_register_device(&gdm->port, gdm_driver[i],
gdm->minor, device);
}
for (i = 0; i < MAX_ISSUE_NUM; i++)
gdm->tty_dev->recv_func(gdm->tty_dev->priv_dev,
gdm_tty_recv_complete);
return 0;
}
void unregister_lte_tty_device(struct tty_dev *tty_dev)
{
struct gdm *gdm;
struct tty_struct *tty;
int i;
for (i = 0; i < TTY_MAX_COUNT; i++) {
gdm = tty_dev->gdm[i];
if (!gdm)
continue;
mutex_lock(&gdm_table_lock);
gdm_table[gdm->index][gdm->minor] = NULL;
mutex_unlock(&gdm_table_lock);
tty = tty_port_tty_get(&gdm->port);
if (tty) {
tty_vhangup(tty);
tty_kref_put(tty);
}
tty_unregister_device(gdm_driver[i], gdm->minor);
tty_port_put(&gdm->port);
}
}
static const struct tty_operations gdm_tty_ops = {
.install = gdm_tty_install,
.open = gdm_tty_open,
.close = gdm_tty_close,
.cleanup = gdm_tty_cleanup,
.hangup = gdm_tty_hangup,
.write = gdm_tty_write,
.write_room = gdm_tty_write_room,
};
int register_lte_tty_driver(void)
{
struct tty_driver *tty_driver;
int i;
int ret;
for (i = 0; i < TTY_MAX_COUNT; i++) {
tty_driver = tty_alloc_driver(GDM_TTY_MINOR,
TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV);
if (IS_ERR(tty_driver))
return PTR_ERR(tty_driver);
tty_driver->owner = THIS_MODULE;
tty_driver->driver_name = DRIVER_STRING[i];
tty_driver->name = DEVICE_STRING[i];
tty_driver->major = GDM_TTY_MAJOR;
tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
tty_driver->subtype = SERIAL_TYPE_NORMAL;
tty_driver->init_termios = tty_std_termios;
tty_driver->init_termios.c_cflag = B9600 | CS8 | HUPCL | CLOCAL;
tty_driver->init_termios.c_lflag = ISIG | ICANON | IEXTEN;
tty_set_operations(tty_driver, &gdm_tty_ops);
ret = tty_register_driver(tty_driver);
if (ret) {
tty_driver_kref_put(tty_driver);
return ret;
}
gdm_driver[i] = tty_driver;
}
return ret;
}
void unregister_lte_tty_driver(void)
{
struct tty_driver *tty_driver;
int i;
for (i = 0; i < TTY_MAX_COUNT; i++) {
tty_driver = gdm_driver[i];
if (tty_driver) {
tty_unregister_driver(tty_driver);
tty_driver_kref_put(tty_driver);
}
}
}

60
drivers/staging/gdm724x/gdm_tty.h
View File

@ -1,60 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved. */
#ifndef _GDM_TTY_H_
#define _GDM_TTY_H_
#include <linux/types.h>
#include <linux/tty.h>
#define TTY_MAX_COUNT 2
#define MAX_ISSUE_NUM 3
enum TO_HOST_RESULT {
TO_HOST_BUFFER_REQUEST_FAIL = 1,
TO_HOST_PORT_CLOSE = 2,
TO_HOST_INVALID_PACKET = 3,
};
enum RECV_PACKET_PROCESS {
RECV_PACKET_PROCESS_COMPLETE = 0,
RECV_PACKET_PROCESS_CONTINUE = 1,
};
struct gdm {
struct tty_dev *tty_dev;
struct tty_port port;
unsigned int index;
unsigned int minor;
};
struct tty_dev {
void *priv_dev;
int (*send_func)(void *priv_dev,
void *data,
int len,
int tty_index,
void (*cb)(void *cb_data),
void *cb_data);
int (*recv_func)(void *priv_dev,
int (*cb)(void *data,
int len,
int tty_index,
struct tty_dev *tty_dev,
int complete));
int (*send_control)(void *priv_dev,
int request,
int value,
void *data,
int len);
struct gdm *gdm[2];
};
int register_lte_tty_driver(void);
void unregister_lte_tty_driver(void);
int register_lte_tty_device(struct tty_dev *tty_dev, struct device *dev);
void unregister_lte_tty_device(struct tty_dev *tty_dev);
#endif /* _GDM_USB_H_ */

1014
drivers/staging/gdm724x/gdm_usb.c
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File diff suppressed because it is too large Load Diff

99
drivers/staging/gdm724x/gdm_usb.h
View File

@ -1,99 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved. */
#ifndef _GDM_USB_H_
#define _GDM_USB_H_
#include <linux/types.h>
#include <linux/usb.h>
#include <linux/list.h>
#include <linux/time.h>
#include "gdm_endian.h"
#include "hci_packet.h"
#define PM_NORMAL 0
#define PM_SUSPEND 1
#define AUTO_SUSPEND_TIMER 5000 /* ms */
#define RX_BUF_SIZE (1024 * 32)
#define TX_BUF_SIZE (1024 * 32)
#define SDU_BUF_SIZE 2048
#define MAX_SDU_SIZE (1024 * 30)
#define MAX_PACKET_IN_MULTI_SDU 256
#define VID_GCT 0x1076
#define PID_GDM7240 0x8000
#define PID_GDM7243 0x9000
#define NETWORK_INTERFACE 1
#define USB_SC_SCSI 0x06
#define USB_PR_BULK 0x50
#define MAX_NUM_SDU_BUF 64
struct usb_tx {
struct list_head list;
struct urb *urb;
u8 *buf;
u32 len;
void (*callback)(void *cb_data);
void *cb_data;
struct tx_cxt *tx;
u8 is_sdu;
};
struct usb_tx_sdu {
struct list_head list;
u8 *buf;
u32 len;
void (*callback)(void *cb_data);
void *cb_data;
};
struct usb_rx {
struct list_head to_host_list;
struct list_head free_list;
struct list_head rx_submit_list;
struct rx_cxt *rx;
struct urb *urb;
u8 *buf;
int (*callback)(void *cb_data, void *data, int len, int context);
void *cb_data;
void *index;
};
struct tx_cxt {
struct list_head sdu_list;
struct list_head hci_list;
struct list_head free_list;
u32 avail_count;
spinlock_t lock;
};
struct rx_cxt {
struct list_head to_host_list;
struct list_head rx_submit_list;
struct list_head free_list;
u32 avail_count;
spinlock_t to_host_lock;
spinlock_t rx_lock;
spinlock_t submit_lock;
};
struct lte_udev {
struct usb_device *usbdev;
struct tx_cxt tx;
struct rx_cxt rx;
struct delayed_work work_tx;
struct delayed_work work_rx;
u8 gdm_ed;
u8 send_complete;
u8 tx_stop;
struct usb_interface *intf;
int (*rx_cb)(void *cb_data, void *data, int len, int context);
int usb_state;
u8 request_mac_addr;
};
#endif /* _GDM_USB_H_ */

45
drivers/staging/gdm724x/hci.h
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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved. */
#ifndef _HCI_H_
#define _HCI_H_
#define LTE_GET_INFORMATION 0x3002
#define LTE_GET_INFORMATION_RESULT 0xB003
#define MAC_ADDRESS 0xA2
#define LTE_LINK_ON_OFF_INDICATION 0xB133
#define LTE_PDN_TABLE_IND 0xB143
#define LTE_TX_SDU 0x3200
#define LTE_RX_SDU 0xB201
#define LTE_TX_MULTI_SDU 0x3202
#define LTE_RX_MULTI_SDU 0xB203
#define LTE_DL_SDU_FLOW_CONTROL 0x3305
#define LTE_UL_SDU_FLOW_CONTROL 0xB306
#define LTE_AT_CMD_TO_DEVICE 0x3307
#define LTE_AT_CMD_FROM_DEVICE 0xB308
#define LTE_SDIO_DM_SEND_PKT 0x3312
#define LTE_SDIO_DM_RECV_PKT 0xB313
#define LTE_NV_RESTORE_REQUEST 0xB30C
#define LTE_NV_RESTORE_RESPONSE 0x330D
#define LTE_NV_SAVE_REQUEST 0xB30E
#define NV_TYPE_LTE_INFO 0x00
#define NV_TYPE_BOARD_CONFIG 0x01
#define NV_TYPE_RF_CAL 0x02
#define NV_TYPE_TEMP 0x03
#define NV_TYPE_NET_INFO 0x04
#define NV_TYPE_SAFETY_INFO 0x05
#define NV_TYPE_CDMA_CAL 0x06
#define NV_TYPE_VENDOR 0x07
#define NV_TYPE_ALL 0xff
#define LTE_NV_SAVE_RESPONSE 0x330F
#define LTE_AT_CMD_TO_DEVICE_EXT 0x3323
#define LTE_AT_CMD_FROM_DEVICE_EXT 0xB324
#endif /* _HCI_H_ */

82
drivers/staging/gdm724x/hci_packet.h
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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved. */
#ifndef _HCI_PACKET_H_
#define _HCI_PACKET_H_
#define HCI_HEADER_SIZE 4
/*
* The NIC type definition:
* For backward compatibility, lower 16 bits used as they were.
* Lower 16 bit: NIC_TYPE values
* Uppoer 16 bit: NIC_TYPE Flags
*/
#define NIC_TYPE_NIC0 0x00000010
#define NIC_TYPE_NIC1 0x00000011
#define NIC_TYPE_NIC2 0x00000012
#define NIC_TYPE_NIC3 0x00000013
#define NIC_TYPE_ARP 0x00000100
#define NIC_TYPE_ICMPV6 0x00000200
#define NIC_TYPE_MASK 0x0000FFFF
#define NIC_TYPE_F_IPV4 0x00010000
#define NIC_TYPE_F_IPV6 0x00020000
#define NIC_TYPE_F_DHCP 0x00040000
#define NIC_TYPE_F_NDP 0x00080000
#define NIC_TYPE_F_VLAN 0x00100000
struct hci_packet {
__dev16 cmd_evt;
__dev16 len;
u8 data[];
} __packed;
struct tlv {
u8 type;
u8 len;
u8 *data[];
} __packed;
struct sdu_header {
__dev16 cmd_evt;
__dev16 len;
__dev32 dft_eps_id;
__dev32 bearer_ID;
__dev32 nic_type;
} __packed;
struct sdu {
__dev16 cmd_evt;
__dev16 len;
__dev32 dft_eps_ID;
__dev32 bearer_ID;
__dev32 nic_type;
u8 data[];
} __packed;
struct multi_sdu {
__dev16 cmd_evt;
__dev16 len;
__dev16 num_packet;
__dev16 reserved;
u8 data[];
} __packed;
struct hci_pdn_table_ind {
__dev16 cmd_evt;
__dev16 len;
u8 activate;
__dev32 dft_eps_id;
__dev32 nic_type;
u8 pdn_type;
u8 ipv4_addr[4];
u8 ipv6_intf_id[8];
} __packed;
struct hci_connect_ind {
__dev16 cmd_evt;
__dev16 len;
__dev32 connect;
} __packed;
#endif /* _HCI_PACKET_H_ */

128
drivers/staging/gdm724x/netlink_k.c
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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved. */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/export.h>
#include <linux/mutex.h>
#include <linux/etherdevice.h>
#include <linux/netlink.h>
#include <asm/byteorder.h>
#include <net/sock.h>
#include "netlink_k.h"
static DEFINE_MUTEX(netlink_mutex);
#define ND_MAX_GROUP 30
#define ND_IFINDEX_LEN sizeof(int)
#define ND_NLMSG_SPACE(len) (NLMSG_SPACE(len) + ND_IFINDEX_LEN)
#define ND_NLMSG_DATA(nlh) ((void *)((char *)NLMSG_DATA(nlh) + \
ND_IFINDEX_LEN))
#define ND_NLMSG_S_LEN(len) ((len) + ND_IFINDEX_LEN)
#define ND_NLMSG_R_LEN(nlh) ((nlh)->nlmsg_len - ND_IFINDEX_LEN)
#define ND_NLMSG_IFIDX(nlh) NLMSG_DATA(nlh)
#define ND_MAX_MSG_LEN (1024 * 32)
static void (*rcv_cb)(struct net_device *dev, u16 type, void *msg, int len);
static void netlink_rcv_cb(struct sk_buff *skb)
{
struct nlmsghdr *nlh;
struct net_device *dev;
u32 mlen;
void *msg;
int ifindex;
if (!rcv_cb) {
pr_err("nl cb - unregistered\n");
return;
}
if (skb->len < NLMSG_HDRLEN) {
pr_err("nl cb - invalid skb length\n");
return;
}
nlh = (struct nlmsghdr *)skb->data;
if (skb->len < nlh->nlmsg_len || nlh->nlmsg_len > ND_MAX_MSG_LEN) {
pr_err("nl cb - invalid length (%d,%d)\n",
skb->len, nlh->nlmsg_len);
return;
}
memcpy(&ifindex, ND_NLMSG_IFIDX(nlh), ND_IFINDEX_LEN);
msg = ND_NLMSG_DATA(nlh);
mlen = ND_NLMSG_R_LEN(nlh);
dev = dev_get_by_index(&init_net, ifindex);
if (dev) {
rcv_cb(dev, nlh->nlmsg_type, msg, mlen);
dev_put(dev);
} else {
pr_err("nl cb - dev (%d) not found\n", ifindex);
}
}
static void netlink_rcv(struct sk_buff *skb)
{
mutex_lock(&netlink_mutex);
netlink_rcv_cb(skb);
mutex_unlock(&netlink_mutex);
}
struct sock *netlink_init(int unit,
void (*cb)(struct net_device *dev, u16 type,
void *msg, int len))
{
struct sock *sock;
struct netlink_kernel_cfg cfg = {
.input = netlink_rcv,
};
sock = netlink_kernel_create(&init_net, unit, &cfg);
if (sock)
rcv_cb = cb;
return sock;
}
int netlink_send(struct sock *sock, int group, u16 type, void *msg, int len,
struct net_device *dev)
{
static u32 seq;
struct sk_buff *skb = NULL;
struct nlmsghdr *nlh;
int ret = 0;
if (group > ND_MAX_GROUP)
return -EINVAL;
if (!netlink_has_listeners(sock, group + 1))
return -ESRCH;
skb = alloc_skb(NLMSG_SPACE(len), GFP_ATOMIC);
if (!skb)
return -ENOMEM;
seq++;
nlh = nlmsg_put(skb, 0, seq, type, len, 0);
memcpy(NLMSG_DATA(nlh), msg, len);
NETLINK_CB(skb).portid = 0;
NETLINK_CB(skb).dst_group = 0;
ret = netlink_broadcast(sock, skb, 0, group + 1, GFP_ATOMIC);
if (!ret)
return len;
if (ret != -ESRCH)
netdev_err(dev, "nl broadcast g=%d, t=%d, l=%d, r=%d\n",
group, type, len, ret);
else if (netlink_has_listeners(sock, group + 1))
return -EAGAIN;
return ret;
}

16
drivers/staging/gdm724x/netlink_k.h
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@ -1,16 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved. */
#ifndef _NETLINK_K_H
#define _NETLINK_K_H
#include <linux/netdevice.h>
#include <net/sock.h>
struct sock *netlink_init(int unit,
void (*cb)(struct net_device *dev,
u16 type, void *msg, int len));
int netlink_send(struct sock *sock, int group, u16 type, void *msg, int len,
struct net_device *dev);
#endif /* _NETLINK_K_H_ */