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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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staging: gdm7240: adding LTE USB driver
GCT Semiconductor GDM7240 is 4G LTE chip. This driver supports GCT reference platform as a USB device. Signed-off-by: Won Kang <wonkang@gctsemi.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Won Kang
Greg Kroah-Hartman
parent
17dc1597c5
commit
61e1210476
@ -118,6 +118,8 @@ source "drivers/staging/ozwpan/Kconfig"
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source "drivers/staging/gdm72xx/Kconfig"
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source "drivers/staging/gdm724x/Kconfig"
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source "drivers/staging/silicom/Kconfig"
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source "drivers/staging/ced1401/Kconfig"
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@ -52,6 +52,7 @@ obj-$(CONFIG_MFD_NVEC) += nvec/
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obj-$(CONFIG_ANDROID) += android/
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obj-$(CONFIG_USB_WPAN_HCD) += ozwpan/
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obj-$(CONFIG_WIMAX_GDM72XX) += gdm72xx/
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obj-$(CONFIG_LTE_GDM724X) += gdm724x/
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obj-$(CONFIG_NET_VENDOR_SILICOM) += silicom/
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obj-$(CONFIG_CED1401) += ced1401/
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obj-$(CONFIG_DRM_IMX) += imx-drm/
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15
drivers/staging/gdm724x/Kconfig
Normal file
15
drivers/staging/gdm724x/Kconfig
Normal file
@ -0,0 +1,15 @@
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#
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# GCT GDM724x LTE driver configuration
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#
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config LTE_GDM724X
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tristate "GCT GDM724x LTE support"
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depends on NET && USB
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help
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This driver supports GCT GDM724x LTE chip based USB modem devices.
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It exposes 4 network devices to be used per PDN and 2 tty devices to be
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used for AT commands and DM monitoring applications.
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The modules will be called gdmulte.ko and gdmtty.ko
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GCT-ATCx can be used for AT Commands
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GCT-DMx can be used for LTE protocol monitoring
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7
drivers/staging/gdm724x/Makefile
Normal file
7
drivers/staging/gdm724x/Makefile
Normal file
@ -0,0 +1,7 @@
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obj-$(CONFIG_LTE_GDM724X) := gdmulte.o
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gdmulte-y += gdm_lte.o netlink_k.o
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gdmulte-y += gdm_usb.o gdm_endian.o
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obj-$(CONFIG_LTE_GDM724X) += gdmtty.o
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gdmtty-y := gdm_tty.o gdm_mux.o
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15
drivers/staging/gdm724x/TODO
Normal file
15
drivers/staging/gdm724x/TODO
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@ -0,0 +1,15 @@
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TODO:
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- Clean up coding style to meet kernel standard. (80 line limit, netdev_err)
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- Remove test for host endian
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- Remove confusing macros (endian, hci_send, sdu_send, rcv_with_cb)
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- Fixes for every instances of function returning -1
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- Check for skb->len in gdm_lte_emulate_arp()
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- Use ALIGN() macro for dummy_cnt in up_to_host()
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- Error handling in init_usb()
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- Explain reason for multiples of 512 bytes in alloc_tx_struct()
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- Review use of atomic allocation for tx structs
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- No error checking for alloc_tx_struct in do_tx()
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Patches to:
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Jonathan Kim <jonathankim@gctsemi.com>
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Dean ahn <deanahn@gctsemi.com>
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67
drivers/staging/gdm724x/gdm_endian.c
Normal file
67
drivers/staging/gdm724x/gdm_endian.c
Normal file
@ -0,0 +1,67 @@
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/*
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* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/slab.h>
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#include "gdm_endian.h"
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void set_endian(struct gdm_endian *ed, u8 dev_endian)
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{
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u8 a[2] = {0x12, 0x34};
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u8 b[2] = {0, };
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u16 c = 0x1234;
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if (dev_endian == ENDIANNESS_BIG)
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ed->dev_ed = ENDIANNESS_BIG;
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else
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ed->dev_ed = ENDIANNESS_LITTLE;
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memcpy(b, &c, 2);
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if (a[0] != b[0])
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ed->host_ed = ENDIANNESS_LITTLE;
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else
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ed->host_ed = ENDIANNESS_BIG;
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}
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u16 gdm_cpu_to_dev16(struct gdm_endian *ed, u16 x)
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{
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if (ed->dev_ed == ed->host_ed)
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return x;
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return Endian16_Swap(x);
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}
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u16 gdm_dev16_to_cpu(struct gdm_endian *ed, u16 x)
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{
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if (ed->dev_ed == ed->host_ed)
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return x;
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return Endian16_Swap(x);
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}
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u32 gdm_cpu_to_dev32(struct gdm_endian *ed, u32 x)
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{
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if (ed->dev_ed == ed->host_ed)
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return x;
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return Endian32_Swap(x);
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}
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u32 gdm_dev32_to_cpu(struct gdm_endian *ed, u32 x)
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{
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if (ed->dev_ed == ed->host_ed)
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return x;
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return Endian32_Swap(x);
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}
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49
drivers/staging/gdm724x/gdm_endian.h
Normal file
49
drivers/staging/gdm724x/gdm_endian.h
Normal file
@ -0,0 +1,49 @@
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/*
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* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __GDM_ENDIAN_H__
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#define __GDM_ENDIAN_H__
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#include <linux/types.h>
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#define Endian16_Swap(value) \
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((((u16)((value) & 0x00FF)) << 8) | \
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(((u16)((value) & 0xFF00)) >> 8))
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#define Endian32_Swap(value) \
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((((u32)((value) & 0x000000FF)) << 24) | \
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(((u32)((value) & 0x0000FF00)) << 8) | \
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(((u32)((value) & 0x00FF0000)) >> 8) | \
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(((u32)((value) & 0xFF000000)) >> 24))
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enum {
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ENDIANNESS_MIN = 0,
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ENDIANNESS_UNKNOWN,
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ENDIANNESS_LITTLE,
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ENDIANNESS_BIG,
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ENDIANNESS_MIDDLE,
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ENDIANNESS_MAX
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};
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struct gdm_endian {
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u8 dev_ed;
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u8 host_ed;
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};
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void set_endian(struct gdm_endian *ed, u8 dev_endian);
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u16 gdm_cpu_to_dev16(struct gdm_endian *ed, u16 x);
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u16 gdm_dev16_to_cpu(struct gdm_endian *ed, u16 x);
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u32 gdm_cpu_to_dev32(struct gdm_endian *ed, u32 x);
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u32 gdm_dev32_to_cpu(struct gdm_endian *ed, u32 x);
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#endif /*__GDM_ENDIAN_H__*/
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920
drivers/staging/gdm724x/gdm_lte.c
Normal file
920
drivers/staging/gdm724x/gdm_lte.c
Normal file
@ -0,0 +1,920 @@
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/*
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* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/version.h>
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#include <linux/etherdevice.h>
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#include <linux/ip.h>
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#include <linux/ipv6.h>
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#include <linux/udp.h>
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#include <linux/in.h>
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#include <linux/if_arp.h>
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#include <linux/if_ether.h>
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#include <linux/if_vlan.h>
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#include <linux/in.h>
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#include <linux/in6.h>
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#include <linux/udp.h>
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#include <linux/tcp.h>
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#include <linux/icmp.h>
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#include <linux/icmpv6.h>
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#include <linux/uaccess.h>
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#include <net/ndisc.h>
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#include "gdm_lte.h"
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#include "netlink_k.h"
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#include "hci.h"
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#include "hci_packet.h"
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#include "gdm_endian.h"
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#include "lte_ioctl.h"
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/*
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* Netlink protocol number
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*/
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#define NETLINK_LTE 30
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/*
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* Default MTU Size
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*/
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#define DEFAULT_MTU_SIZE 1500
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#define gdm_dev_endian(n) (\
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n->phy_dev->get_endian(n->phy_dev->priv_dev))
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#define gdm_lte_hci_send(n, d, l) (\
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n->phy_dev->send_hci_func(n->phy_dev->priv_dev, d, l, NULL, NULL))
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#define gdm_lte_sdu_send(n, d, l, c, b, i, t) (\
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n->phy_dev->send_sdu_func(n->phy_dev->priv_dev, d, l, n->pdn_table.dft_eps_id, 0, c, b, i, t))
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#define gdm_lte_rcv_with_cb(n, c, b, e) (\
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n->rcv_func(n->priv_dev, c, b, e))
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#define IP_VERSION_4 4
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#define IP_VERSION_6 6
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static struct {
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int ref_cnt;
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struct sock *sock;
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} lte_event;
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static struct device_type wwan_type = {
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.name = "wwan",
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};
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static int gdm_lte_open(struct net_device *dev)
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{
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netif_start_queue(dev);
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return 0;
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}
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static int gdm_lte_close(struct net_device *dev)
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{
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netif_stop_queue(dev);
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return 0;
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}
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static int gdm_lte_set_config(struct net_device *dev, struct ifmap *map)
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{
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if (dev->flags & IFF_UP)
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return -EBUSY;
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return 0;
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}
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static void tx_complete(void *arg)
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{
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struct nic *nic = arg;
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if (netif_queue_stopped(nic->netdev))
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netif_wake_queue(nic->netdev);
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}
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static int gdm_lte_rx(struct sk_buff *skb, struct nic *nic, int nic_type)
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{
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int ret;
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ret = netif_rx_ni(skb);
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if (ret == NET_RX_DROP) {
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printk(KERN_ERR "glte: rx - dropped\n");
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nic->stats.rx_dropped++;
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} else {
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nic->stats.rx_packets++;
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nic->stats.rx_bytes += skb->len + ETH_HLEN;
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}
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return 0;
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}
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int gdm_lte_emulate_arp(struct sk_buff *skb_in, u32 nic_type)
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{
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struct nic *nic = netdev_priv(skb_in->dev);
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struct sk_buff *skb_out;
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struct ethhdr eth;
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struct vlan_ethhdr vlan_eth;
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struct arphdr *arp_in;
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struct arphdr *arp_out;
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struct arpdata {
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u8 ar_sha[ETH_ALEN];
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u8 ar_sip[4];
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u8 ar_tha[ETH_ALEN];
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u8 ar_tip[4];
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};
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struct arpdata *arp_data_in;
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struct arpdata *arp_data_out;
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u8 arp_temp[60];
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void *mac_header_data;
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u32 mac_header_len;
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/* Format the mac header so that it can be put to skb */
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if (ntohs(((struct ethhdr *)skb_in->data)->h_proto) == ETH_P_8021Q) {
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memcpy(&vlan_eth, skb_in->data, sizeof(struct vlan_ethhdr));
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mac_header_data = &vlan_eth;
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mac_header_len = VLAN_ETH_HLEN;
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} else {
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memcpy(ð, skb_in->data, sizeof(struct ethhdr));
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mac_header_data = ð
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mac_header_len = ETH_HLEN;
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}
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/* Get the pointer of the original request */
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arp_in = (struct arphdr *)(skb_in->data + mac_header_len);
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arp_data_in = (struct arpdata *)(skb_in->data + mac_header_len + sizeof(struct arphdr));
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/* Get the pointer of the outgoing response */
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arp_out = (struct arphdr *)arp_temp;
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arp_data_out = (struct arpdata *)(arp_temp + sizeof(struct arphdr));
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/* Copy the arp header */
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memcpy(arp_out, arp_in, sizeof(struct arphdr));
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arp_out->ar_op = htons(ARPOP_REPLY);
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/* Copy the arp payload: based on 2 bytes of mac and fill the IP */
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arp_data_out->ar_sha[0] = arp_data_in->ar_sha[0];
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arp_data_out->ar_sha[1] = arp_data_in->ar_sha[1];
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memcpy(&arp_data_out->ar_sha[2], &arp_data_in->ar_tip[0], 4);
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memcpy(&arp_data_out->ar_sip[0], &arp_data_in->ar_tip[0], 4);
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memcpy(&arp_data_out->ar_tha[0], &arp_data_in->ar_sha[0], 6);
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memcpy(&arp_data_out->ar_tip[0], &arp_data_in->ar_sip[0], 4);
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/* Fill the destination mac with source mac of the received packet */
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memcpy(mac_header_data, mac_header_data + ETH_ALEN, ETH_ALEN);
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/* Fill the source mac with nic's source mac */
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memcpy(mac_header_data + ETH_ALEN, nic->src_mac_addr, ETH_ALEN);
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/* Alloc skb and reserve align */
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skb_out = dev_alloc_skb(skb_in->len);
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if (!skb_out)
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return -ENOMEM;
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skb_reserve(skb_out, NET_IP_ALIGN);
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memcpy(skb_put(skb_out, mac_header_len), mac_header_data, mac_header_len);
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memcpy(skb_put(skb_out, sizeof(struct arphdr)), arp_out, sizeof(struct arphdr));
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memcpy(skb_put(skb_out, sizeof(struct arpdata)), arp_data_out, sizeof(struct arpdata));
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skb_out->protocol = ((struct ethhdr *)mac_header_data)->h_proto;
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skb_out->dev = skb_in->dev;
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skb_reset_mac_header(skb_out);
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skb_pull(skb_out, ETH_HLEN);
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gdm_lte_rx(skb_out, nic, nic_type);
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return 0;
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}
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int icmp6_checksum(struct ipv6hdr *ipv6, u16 *ptr, int len)
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{
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unsigned short *w = ptr;
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int sum = 0;
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int i;
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union {
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struct {
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u8 ph_src[16];
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u8 ph_dst[16];
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u32 ph_len;
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u8 ph_zero[3];
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u8 ph_nxt;
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} ph __packed;
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u16 pa[20];
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} pseudo_header;
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memset(&pseudo_header, 0, sizeof(pseudo_header));
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memcpy(&pseudo_header.ph.ph_src, &ipv6->saddr.in6_u.u6_addr8, 16);
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memcpy(&pseudo_header.ph.ph_dst, &ipv6->daddr.in6_u.u6_addr8, 16);
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pseudo_header.ph.ph_len = ipv6->payload_len;
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pseudo_header.ph.ph_nxt = ipv6->nexthdr;
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w = (u16 *)&pseudo_header;
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for (i = 0; i < sizeof(pseudo_header.pa) / sizeof(pseudo_header.pa[0]); i++)
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sum += pseudo_header.pa[i];
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w = ptr;
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while (len > 1) {
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sum += *w++;
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len -= 2;
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}
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sum = (sum >> 16) + (sum & 0xFFFF);
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sum += (sum >> 16);
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sum = ~sum & 0xffff;
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return sum;
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}
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int gdm_lte_emulate_ndp(struct sk_buff *skb_in, u32 nic_type)
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{
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struct nic *nic = netdev_priv(skb_in->dev);
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struct sk_buff *skb_out;
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struct ethhdr eth;
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struct vlan_ethhdr vlan_eth;
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struct neighbour_advertisement {
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u8 target_address[16];
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u8 type;
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u8 length;
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u8 link_layer_address[6];
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};
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struct neighbour_advertisement na;
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struct neighbour_solicitation {
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u8 target_address[16];
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};
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struct neighbour_solicitation *ns;
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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 -1;
|
||||
mac_header_data = &vlan_eth;
|
||||
mac_header_len = VLAN_ETH_HLEN;
|
||||
} else {
|
||||
memcpy(ð, skb_in->data, sizeof(struct ethhdr));
|
||||
if (ntohs(eth.h_proto) != ETH_P_IPV6)
|
||||
return -1;
|
||||
mac_header_data = ð
|
||||
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 -1;
|
||||
|
||||
/* 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 -1;
|
||||
} 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;
|
||||
icmp6_out.icmp6_dataun.un_data32[0] = htonl(0x60000000); /* R=0, S=1, O=1 */
|
||||
|
||||
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 -1;
|
||||
}
|
||||
|
||||
/* 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);
|
||||
|
||||
memcpy(skb_put(skb_out, mac_header_len), mac_header_data, mac_header_len);
|
||||
memcpy(skb_put(skb_out, sizeof(struct ipv6hdr)), &ipv6_out, sizeof(struct ipv6hdr));
|
||||
memcpy(skb_put(skb_out, sizeof(struct icmp6hdr)), &icmp6_out, sizeof(struct icmp6hdr));
|
||||
memcpy(skb_put(skb_out, sizeof(struct neighbour_advertisement)), &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 = 0;
|
||||
|
||||
/* 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 = (struct vlan_ethhdr *)skb->data;
|
||||
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 = (struct iphdr *)network_data;
|
||||
|
||||
/* Check DHCPv4 */
|
||||
if (ip->protocol == IPPROTO_UDP) {
|
||||
struct udphdr *udp = (struct udphdr *)(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 = (struct ipv6hdr *)network_data;
|
||||
|
||||
if (ipv6->nexthdr == IPPROTO_ICMPV6) /* Check NDP request */ {
|
||||
struct icmp6hdr *icmp6 = (struct icmp6hdr *)(network_data + sizeof(struct ipv6hdr));
|
||||
if (/*icmp6->icmp6_type == NDISC_ROUTER_SOLICITATION || */
|
||||
icmp6->icmp6_type == NDISC_NEIGHBOUR_SOLICITATION)
|
||||
nic_type |= NIC_TYPE_ICMPV6;
|
||||
} else if (ipv6->nexthdr == IPPROTO_UDP) /* Check DHCPv6 */ {
|
||||
struct udphdr *udp = (struct udphdr *)(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 int 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) {
|
||||
printk(KERN_ERR "glte: tx - invalid nic_type\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
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 reponse 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 = (struct vlan_ethhdr *)skb->data;
|
||||
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 compatibilty 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;
|
||||
|
||||
sscanf(dev->name, "lte%d", &idx);
|
||||
|
||||
ret = gdm_lte_sdu_send(nic,
|
||||
data_buf,
|
||||
data_len,
|
||||
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 void get_dev_endian(struct data_t *data, struct net_device *dev)
|
||||
{
|
||||
struct nic *nic = netdev_priv(dev);
|
||||
unsigned long ret;
|
||||
|
||||
ret = copy_to_user(data->buf, gdm_dev_endian(nic), sizeof(struct dev_endian_t));
|
||||
if (ret)
|
||||
printk(KERN_INFO "glte: state - failed to copy\n");
|
||||
}
|
||||
|
||||
static int gdm_lte_ioctl_get_data(struct wm_req_t *req, struct net_device *dev)
|
||||
{
|
||||
u16 id = req->data_id;
|
||||
|
||||
switch (id) {
|
||||
case GET_ENDIAN_INFO:
|
||||
/* required for the user space application to find out device endian */
|
||||
get_dev_endian(&req->data, dev);
|
||||
break;
|
||||
default:
|
||||
printk(KERN_ERR "glte: ioctl - unknown type %d\n", id);
|
||||
break;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int gdm_lte_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
|
||||
{
|
||||
struct wm_req_t *req = (struct wm_req_t *)ifr;
|
||||
|
||||
if (cmd != SIOCLTEIOCTL || req->cmd != SIOCG_DATA || req->data_id >= 100)
|
||||
return -EOPNOTSUPP;
|
||||
|
||||
return gdm_lte_ioctl_get_data(req, dev);
|
||||
}
|
||||
|
||||
static int gdm_lte_event_send(struct net_device *dev, char *buf, int len)
|
||||
{
|
||||
struct nic *nic = netdev_priv(dev);
|
||||
struct hci_packet *hci = (struct hci_packet *)buf;
|
||||
int idx;
|
||||
|
||||
sscanf(dev->name, "lte%d", &idx);
|
||||
|
||||
return netlink_send(lte_event.sock, idx, 0, buf,
|
||||
gdm_dev16_to_cpu(gdm_dev_endian(nic), hci->len) + HCI_HEADER_SIZE);
|
||||
}
|
||||
|
||||
static void gdm_lte_event_rcv(struct net_device *dev, u16 type, void *msg, int len)
|
||||
{
|
||||
struct nic *nic = netdev_priv(dev);
|
||||
|
||||
gdm_lte_hci_send(nic, msg, len);
|
||||
}
|
||||
|
||||
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;
|
||||
}
|
||||
|
||||
printk(KERN_ERR "glte: event init failed\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
void gdm_lte_event_exit(void)
|
||||
{
|
||||
if (lte_event.sock && --lte_event.ref_cnt == 0) {
|
||||
netlink_exit(lte_event.sock);
|
||||
lte_event.sock = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
static u8 find_dev_index(u32 nic_type)
|
||||
{
|
||||
u8 index;
|
||||
|
||||
index = (u8)(nic_type & 0x0000000f);
|
||||
if (index > MAX_NIC_TYPE)
|
||||
index = 0;
|
||||
|
||||
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;
|
||||
void *addr = buf + sizeof(struct iphdr) + sizeof(struct udphdr) + offsetof(struct dhcp_packet, chaddr);
|
||||
memcpy(nic->dest_mac_addr, addr, ETH_ALEN);
|
||||
}
|
||||
}
|
||||
|
||||
if (nic->vlan_id > 0) {
|
||||
mac_header_data = (void *)&vlan_eth;
|
||||
mac_header_len = VLAN_ETH_HLEN;
|
||||
} else {
|
||||
mac_header_data = (void *)ð
|
||||
mac_header_len = ETH_HLEN;
|
||||
}
|
||||
|
||||
/* Format the data so that it can be put to skb */
|
||||
memcpy(mac_header_data, nic->dest_mac_addr, ETH_ALEN);
|
||||
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 {
|
||||
printk(KERN_ERR "glte: 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);
|
||||
|
||||
memcpy(skb_put(skb, mac_header_len), mac_header_data, mac_header_len);
|
||||
memcpy(skb_put(skb, len), 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 *data = (u8 *)multi_sdu->data;
|
||||
u16 i = 0;
|
||||
u16 num_packet;
|
||||
u16 hci_len;
|
||||
u16 cmd_evt;
|
||||
u32 nic_type;
|
||||
u8 index;
|
||||
|
||||
hci_len = gdm_dev16_to_cpu(phy_dev->get_endian(phy_dev->priv_dev), multi_sdu->len);
|
||||
num_packet = gdm_dev16_to_cpu(phy_dev->get_endian(phy_dev->priv_dev), multi_sdu->num_packet);
|
||||
|
||||
for (i = 0; i < num_packet; i++) {
|
||||
sdu = (struct sdu *)data;
|
||||
|
||||
cmd_evt = gdm_dev16_to_cpu(phy_dev->get_endian(phy_dev->priv_dev), sdu->cmd_evt);
|
||||
hci_len = gdm_dev16_to_cpu(phy_dev->get_endian(phy_dev->priv_dev), sdu->len);
|
||||
nic_type = gdm_dev32_to_cpu(phy_dev->get_endian(phy_dev->priv_dev), sdu->nic_type);
|
||||
|
||||
if (cmd_evt != LTE_RX_SDU) {
|
||||
printk(KERN_ERR "glte: rx sdu wrong hci %04x\n", cmd_evt);
|
||||
return;
|
||||
}
|
||||
if (hci_len < 12) {
|
||||
printk(KERN_ERR "glte: rx sdu invalid len %d\n", hci_len);
|
||||
return;
|
||||
}
|
||||
|
||||
index = find_dev_index(nic_type);
|
||||
if (index < MAX_NIC_TYPE) {
|
||||
dev = phy_dev->dev[index];
|
||||
gdm_lte_netif_rx(dev, (char *)sdu->data, (int)(hci_len-12), nic_type);
|
||||
} else {
|
||||
printk(KERN_ERR "glte: rx sdu invalid nic_type : %x\n", 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;
|
||||
|
||||
if (pdn_table->activate) {
|
||||
nic->pdn_table.activate = pdn_table->activate;
|
||||
nic->pdn_table.dft_eps_id = gdm_dev32_to_cpu(gdm_dev_endian(nic), pdn_table->dft_eps_id);
|
||||
nic->pdn_table.nic_type = gdm_dev32_to_cpu(gdm_dev_endian(nic), pdn_table->nic_type);
|
||||
|
||||
printk(KERN_INFO "glte: pdn %s activated, nic_type=0x%x\n",
|
||||
dev->name, nic->pdn_table.nic_type);
|
||||
} else {
|
||||
memset(&nic->pdn_table, 0x00, sizeof(struct pdn_table));
|
||||
printk(KERN_INFO "glte: pdn %s deactivated\n",
|
||||
dev->name);
|
||||
}
|
||||
}
|
||||
|
||||
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;
|
||||
int ret = 0;
|
||||
u16 cmd_evt;
|
||||
u32 nic_type;
|
||||
u8 index;
|
||||
|
||||
if (!len)
|
||||
return ret;
|
||||
|
||||
cmd_evt = gdm_dev16_to_cpu(phy_dev->get_endian(phy_dev->priv_dev), hci->cmd_evt);
|
||||
|
||||
dev = phy_dev->dev[0];
|
||||
if (dev == NULL)
|
||||
return 0;
|
||||
|
||||
switch (cmd_evt) {
|
||||
case LTE_RX_SDU:
|
||||
sdu = (struct sdu *)hci->data;
|
||||
nic_type = gdm_dev32_to_cpu(phy_dev->get_endian(phy_dev->priv_dev), sdu->nic_type);
|
||||
index = find_dev_index(nic_type);
|
||||
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:
|
||||
{
|
||||
struct hci_connect_ind *connect_ind = (struct hci_connect_ind *)buf;
|
||||
printk(KERN_INFO "glte: link %s\n",
|
||||
connect_ind->connect ? "on" : "off");
|
||||
}
|
||||
break;
|
||||
case LTE_PDN_TABLE_IND:
|
||||
pdn_table = (struct hci_pdn_table_ind *)buf;
|
||||
nic_type = gdm_dev32_to_cpu(phy_dev->get_endian(phy_dev->priv_dev), pdn_table->nic_type);
|
||||
index = find_dev_index(nic_type);
|
||||
dev = phy_dev->dev[index];
|
||||
gdm_lte_pdn_table(dev, buf, len);
|
||||
/* Fall through */
|
||||
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 = (struct phy_dev *)arg;
|
||||
|
||||
return gdm_lte_receive_pkt(phy_dev, (char *)data, len);
|
||||
}
|
||||
|
||||
void start_rx_proc(struct phy_dev *phy_dev)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < MAX_RX_SUBMIT_COUNT; i++)
|
||||
gdm_lte_rcv_with_cb(phy_dev, rx_complete, phy_dev, USB_COMPLETE);
|
||||
}
|
||||
|
||||
static 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,
|
||||
.ndo_do_ioctl = gdm_lte_ioctl,
|
||||
};
|
||||
|
||||
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)
|
||||
memcpy(dev_addr, gdm_lte_macaddr, ETH_ALEN);
|
||||
else
|
||||
memcpy(dev_addr, mac_address, ETH_ALEN);
|
||||
|
||||
/* 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 */
|
||||
random_ether_addr(nic_src);
|
||||
memcpy(nic_src, dev_addr, 3);
|
||||
|
||||
/* Copy the nic_dest from dev_addr*/
|
||||
memcpy(nic_dest, dev_addr, ETH_ALEN);
|
||||
}
|
||||
|
||||
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)) {
|
||||
printk(KERN_ERR "glte: 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];
|
||||
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, ether_setup);
|
||||
if (net == NULL) {
|
||||
printk(KERN_ERR "glte: alloc_netdev failed\n");
|
||||
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(
|
||||
net->dev_addr,
|
||||
nic->src_mac_addr,
|
||||
nic->dest_mac_addr,
|
||||
mac_address,
|
||||
index);
|
||||
|
||||
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 == NULL)
|
||||
continue;
|
||||
|
||||
unregister_netdev(net);
|
||||
free_netdev(net);
|
||||
}
|
||||
}
|
||||
80
drivers/staging/gdm724x/gdm_lte.h
Normal file
80
drivers/staging/gdm724x/gdm_lte.h
Normal file
@ -0,0 +1,80 @@
|
||||
/*
|
||||
* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
|
||||
*
|
||||
* This software is licensed under the terms of the GNU General Public
|
||||
* License version 2, as published by the Free Software Foundation, and
|
||||
* may be copied, distributed, and modified under those terms.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#ifndef _GDM_LTE_H_
|
||||
#define _GDM_LTE_H_
|
||||
|
||||
#include <linux/netdevice.h>
|
||||
#include <linux/version.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 dftEpsId, unsigned int epsId,
|
||||
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);
|
||||
struct gdm_endian *(*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_ */
|
||||
700
drivers/staging/gdm724x/gdm_mux.c
Normal file
700
drivers/staging/gdm724x/gdm_mux.c
Normal file
@ -0,0 +1,700 @@
|
||||
/*
|
||||
* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
|
||||
*
|
||||
* This software is licensed under the terms of the GNU General Public
|
||||
* License version 2, as published by the Free Software Foundation, and
|
||||
* may be copied, distributed, and modified under those terms.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/version.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"
|
||||
#include "gdm_tty.h"
|
||||
|
||||
struct workqueue_struct *mux_rx_wq;
|
||||
|
||||
static u16 packet_type[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);
|
||||
|
||||
int packet_type_to_index(u16 packetType)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < TTY_MAX_COUNT; i++) {
|
||||
if (packet_type[i] == packetType)
|
||||
return i;
|
||||
}
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
static struct mux_tx *alloc_mux_tx(int len)
|
||||
{
|
||||
struct mux_tx *t = NULL;
|
||||
|
||||
t = kzalloc(sizeof(struct mux_tx), 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 = NULL;
|
||||
|
||||
r = kzalloc(sizeof(struct mux_rx), GFP_ATOMIC);
|
||||
if (!r)
|
||||
return NULL;
|
||||
|
||||
r->urb = usb_alloc_urb(0, GFP_ATOMIC);
|
||||
r->buf = kmalloc(MUX_RX_MAX_SIZE, GFP_ATOMIC);
|
||||
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 = (struct mux_dev *)r->mux_dev;
|
||||
struct mux_pkt_header *mux_header;
|
||||
unsigned int start_flag;
|
||||
unsigned int payload_size;
|
||||
unsigned short packet_type;
|
||||
int remain;
|
||||
int dummy_cnt;
|
||||
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) {
|
||||
printk(KERN_ERR "glte: invalid START_FLAG %x\n",
|
||||
start_flag);
|
||||
break;
|
||||
}
|
||||
|
||||
remain = (MUX_HEADER_SIZE + payload_size) % 4;
|
||||
dummy_cnt = remain ? (4-remain) : 0;
|
||||
|
||||
if (len - packet_size_sum <
|
||||
MUX_HEADER_SIZE + payload_size + dummy_cnt) {
|
||||
printk(KERN_ERR "glte: invalid payload : %d %d %04x\n",
|
||||
payload_size, len,
|
||||
packet_type
|
||||
);
|
||||
break;
|
||||
}
|
||||
|
||||
index = packet_type_to_index(packet_type);
|
||||
if (index < 0) {
|
||||
printk(KERN_ERR "glte: invalid index %d\n", index);
|
||||
break;
|
||||
}
|
||||
|
||||
ret = r->callback(mux_header->data,
|
||||
payload_size,
|
||||
index,
|
||||
mux_dev->minor[index],
|
||||
RECV_PACKET_PROCESS_CONTINUE
|
||||
);
|
||||
if (ret == TO_HOST_BUFFER_REQUEST_FAIL) {
|
||||
r->offset += packet_size_sum;
|
||||
break;
|
||||
}
|
||||
|
||||
packet_size_sum += MUX_HEADER_SIZE + payload_size + dummy_cnt;
|
||||
if (len - packet_size_sum <= MUX_HEADER_SIZE + 2) {
|
||||
ret = r->callback(NULL,
|
||||
0,
|
||||
index,
|
||||
mux_dev->minor[index],
|
||||
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 = (struct rx_cxt *)&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)
|
||||
printk(KERN_ERR "glte: 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 = (struct 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)
|
||||
printk(KERN_ERR "glte: gdm_mux_rcv_complete urb status error %d\n", 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);
|
||||
queue_work(mux_rx_wq, &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, int minor, 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) {
|
||||
printk(KERN_ERR "glte: device is disconnected\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
r = get_rx_struct(rx);
|
||||
if (!r) {
|
||||
printk(KERN_ERR "glte: 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);
|
||||
|
||||
printk(KERN_ERR "glte: 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) {
|
||||
printk(KERN_INFO "glte: 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 remain;
|
||||
int dummy_cnt;
|
||||
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);
|
||||
|
||||
remain = (MUX_HEADER_SIZE + len) % 4;
|
||||
dummy_cnt = remain ? (4 - remain) : 0;
|
||||
|
||||
total_len = len + MUX_HEADER_SIZE + dummy_cnt;
|
||||
|
||||
t = alloc_mux_tx(total_len);
|
||||
if (!t) {
|
||||
printk(KERN_ERR "glte: 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[tty_index]);
|
||||
|
||||
memcpy(t->buf+MUX_HEADER_SIZE, data, len);
|
||||
memset(t->buf+MUX_HEADER_SIZE+len, 0, dummy_cnt);
|
||||
|
||||
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_KERNEL);
|
||||
|
||||
spin_unlock_irqrestore(&mux_dev->write_lock, flags);
|
||||
|
||||
if (ret)
|
||||
printk(KERN_ERR "glte: 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)
|
||||
printk(KERN_ERR "glte: usb_control_msg error : %d\n", ret);
|
||||
|
||||
return ret < 0 ? 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 == NULL) {
|
||||
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 = NULL;
|
||||
struct tty_dev *tty_dev = NULL;
|
||||
u16 idVendor, idProduct;
|
||||
int bInterfaceNumber;
|
||||
int ret = 0;
|
||||
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);
|
||||
|
||||
printk(KERN_INFO "glte: mux vid = 0x%04x pid = 0x%04x\n",
|
||||
idVendor, idProduct);
|
||||
|
||||
if (bInterfaceNumber != 2) {
|
||||
ret = -ENODEV;
|
||||
goto out;
|
||||
}
|
||||
|
||||
mux_dev = kzalloc(sizeof(struct mux_dev), GFP_KERNEL);
|
||||
if (!mux_dev) {
|
||||
ret = -ENOMEM;
|
||||
goto out;
|
||||
}
|
||||
|
||||
tty_dev = kzalloc(sizeof(struct tty_dev), GFP_KERNEL);
|
||||
if (!tty_dev) {
|
||||
kfree(mux_dev);
|
||||
ret = -ENOMEM;
|
||||
goto out;
|
||||
}
|
||||
|
||||
mux_dev->usbdev = usbdev;
|
||||
mux_dev->control_intf = intf;
|
||||
|
||||
ret = init_usb(mux_dev);
|
||||
if (ret < 0)
|
||||
goto out;
|
||||
|
||||
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;
|
||||
|
||||
if (register_lte_tty_device(tty_dev, &intf->dev) < 0) {
|
||||
unregister_lte_tty_device(tty_dev);
|
||||
mux_dev = tty_dev->priv_dev;
|
||||
|
||||
ret = -1;
|
||||
goto out;
|
||||
}
|
||||
for (i = 0; i < TTY_MAX_COUNT; i++)
|
||||
mux_dev->minor[i] = tty_dev->minor[i];
|
||||
|
||||
out:
|
||||
if (ret < 0) {
|
||||
kfree(tty_dev);
|
||||
if (mux_dev) {
|
||||
release_usb(mux_dev);
|
||||
kfree(mux_dev);
|
||||
}
|
||||
} else {
|
||||
mux_dev->intf = intf;
|
||||
mux_dev->usb_state = PM_NORMAL;
|
||||
}
|
||||
|
||||
usb_get_dev(usbdev);
|
||||
usb_set_intfdata(intf, tty_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;
|
||||
|
||||
if (mux_dev->usb_state != PM_NORMAL) {
|
||||
printk(KERN_ERR "glte: usb suspend - invalid state\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
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) {
|
||||
printk(KERN_ERR "glte: usb resume - invalid state\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
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)
|
||||
{
|
||||
|
||||
mux_rx_wq = create_workqueue("mux_rx_wq");
|
||||
if (mux_rx_wq == NULL) {
|
||||
printk(KERN_ERR "glte: work queue create fail");
|
||||
return -1;
|
||||
}
|
||||
|
||||
register_lte_tty_driver();
|
||||
|
||||
return usb_register(&gdm_mux_driver);
|
||||
}
|
||||
|
||||
static void __exit gdm_usb_mux_exit(void)
|
||||
{
|
||||
unregister_lte_tty_driver();
|
||||
|
||||
if (mux_rx_wq) {
|
||||
flush_workqueue(mux_rx_wq);
|
||||
destroy_workqueue(mux_rx_wq);
|
||||
}
|
||||
|
||||
usb_deregister(&gdm_mux_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
Normal file
85
drivers/staging/gdm724x/gdm_mux.h
Normal file
@ -0,0 +1,85 @@
|
||||
/*
|
||||
* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
|
||||
*
|
||||
* This software is licensed under the terms of the GNU General Public
|
||||
* License version 2, as published by the Free Software Foundation, and
|
||||
* may be copied, distributed, and modified under those terms.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#ifndef _GDM_MUX_H_
|
||||
#define _GDM_MUX_H_
|
||||
|
||||
#include <linux/types.h>
|
||||
#include <linux/usb.h>
|
||||
#include <linux/list.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 {
|
||||
unsigned int start_flag;
|
||||
unsigned int seq_num;
|
||||
unsigned int payload_size;
|
||||
unsigned short packet_type;
|
||||
unsigned char data[0];
|
||||
};
|
||||
|
||||
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, int minor, 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, int minor, int complete);
|
||||
spinlock_t write_lock;
|
||||
u8 minor[2];
|
||||
};
|
||||
|
||||
#endif /* _GDM_MUX_H_ */
|
||||
367
drivers/staging/gdm724x/gdm_tty.c
Normal file
367
drivers/staging/gdm724x/gdm_tty.c
Normal file
@ -0,0 +1,367 @@
|
||||
/*
|
||||
* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
|
||||
*
|
||||
* This software is licensed under the terms of the GNU General Public
|
||||
* License version 2, as published by the Free Software Foundation, and
|
||||
* may be copied, distributed, and modified under those terms.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#include <linux/version.h>
|
||||
#include <linux/kernel.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/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 ACM_CTRL_DTR 0x01
|
||||
#define ACM_CTRL_RTS 0x02
|
||||
#define ACM_CTRL_DSR 0x02
|
||||
#define ACM_CTRL_RI 0x08
|
||||
#define ACM_CTRL_DCD 0x01
|
||||
|
||||
#define WRITE_SIZE 2048
|
||||
|
||||
#define MUX_TX_MAX_SIZE 2048
|
||||
|
||||
#define gdm_tty_send(n, d, l, i, c, b) (\
|
||||
n->tty_dev->send_func(n->tty_dev->priv_dev, d, l, i, c, b))
|
||||
#define gdm_tty_recv(n, c) (\
|
||||
n->tty_dev->recv_func(n->tty_dev->priv_dev, c))
|
||||
#define gdm_tty_send_control(n, r, v, d, l) (\
|
||||
n->tty_dev->send_control(n->tty_dev->priv_dev, r, v, d, l))
|
||||
|
||||
#define acm_set_comm_feature(n, v) \
|
||||
gdm_tty_send_control(n, 0x02, v, NULL, 0)
|
||||
|
||||
#define GDM_TTY_READY(tty_str) (tty_str && tty_str->tty_dev && tty_str->port.count)
|
||||
|
||||
struct tty_driver *g_tty_drv[TTY_MAX_COUNT] = {NULL, };
|
||||
struct tty_str *g_tty_str[TTY_MAX_COUNT][GDM_TTY_MINOR] = {{NULL, }, };
|
||||
|
||||
static char *DRIVER_STRING[TTY_MAX_COUNT] = {"GCTATC", "GCTDM"};
|
||||
static char *DEVICE_STRING[TTY_MAX_COUNT] = {"GCT-ATC", "GCT-DM"};
|
||||
|
||||
static DEFINE_MUTEX(open_mutex);
|
||||
|
||||
static struct tty_port_operations gdm_tty_port_ops = {
|
||||
};
|
||||
|
||||
static int gdm_tty_open(struct tty_struct *tty, struct file *filp)
|
||||
{
|
||||
struct tty_str *tty_str = NULL;
|
||||
int i;
|
||||
int ret = 0;
|
||||
|
||||
mutex_lock(&open_mutex);
|
||||
|
||||
for (i = 0; i < TTY_MAX_COUNT; i++) {
|
||||
if (!strcmp(tty->driver->driver_name, DRIVER_STRING[i])) {
|
||||
tty_str = g_tty_str[i][tty->index];
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (!tty_str) {
|
||||
printk(KERN_INFO "glte: no tty device\n");
|
||||
mutex_unlock(&open_mutex);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
set_bit(TTY_NO_WRITE_SPLIT, &tty->flags);
|
||||
|
||||
tty->driver_data = tty_str;
|
||||
tty_port_tty_set(&tty_str->port, tty);
|
||||
tty_str->port.count++;
|
||||
set_bit(ASYNCB_INITIALIZED, &tty_str->port.flags);
|
||||
ret = tty_port_block_til_ready(&tty_str->port, tty, filp);
|
||||
|
||||
mutex_unlock(&open_mutex);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void gdm_tty_close(struct tty_struct *tty, struct file *filp)
|
||||
{
|
||||
struct tty_str *tty_str = tty->driver_data;
|
||||
int i;
|
||||
|
||||
if (!tty_str) {
|
||||
printk(KERN_INFO "glte: tty device already close\n");
|
||||
return;
|
||||
}
|
||||
|
||||
if (tty_str->port.count != 0) {
|
||||
tty_port_close_start(&tty_str->port, tty, filp);
|
||||
tty_port_close_end(&tty_str->port, tty);
|
||||
|
||||
if (tty_str->port.count == 0)
|
||||
tty_port_tty_set(&tty_str->port, NULL);
|
||||
tty_str->port.tty = NULL;
|
||||
}
|
||||
|
||||
if (!tty_str->tty_dev) {
|
||||
for (i = 0; i < TTY_MAX_COUNT; i++) {
|
||||
if (!strcmp(tty->driver->driver_name, DRIVER_STRING[i]))
|
||||
break;
|
||||
}
|
||||
|
||||
if (i < TTY_MAX_COUNT) {
|
||||
tty_unregister_device(g_tty_drv[i], tty->index);
|
||||
tty_port_tty_set(&tty_str->port, NULL);
|
||||
kfree(tty_str);
|
||||
g_tty_str[i][tty->index] = NULL;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static int gdm_tty_recv_complete(void *data, int len, int index, int minor, int complete)
|
||||
{
|
||||
struct tty_str *tty_str = g_tty_str[index][minor];
|
||||
struct tty_struct *tty;
|
||||
|
||||
if (!GDM_TTY_READY(tty_str)) {
|
||||
if (complete == RECV_PACKET_PROCESS_COMPLETE)
|
||||
gdm_tty_recv(tty_str, gdm_tty_recv_complete);
|
||||
return TO_HOST_PORT_CLOSE;
|
||||
}
|
||||
|
||||
if (!data || !len)
|
||||
goto complete_routine;
|
||||
|
||||
tty = tty_port_tty_get(&tty_str->port);
|
||||
|
||||
if (tty_buffer_request_room(tty, len) == len) {
|
||||
tty_insert_flip_string(tty, data, len);
|
||||
tty_flip_buffer_push(tty);
|
||||
} else {
|
||||
tty_kref_put(tty);
|
||||
return TO_HOST_BUFFER_REQUEST_FAIL;
|
||||
}
|
||||
|
||||
tty_kref_put(tty);
|
||||
complete_routine:
|
||||
if (complete == RECV_PACKET_PROCESS_COMPLETE)
|
||||
gdm_tty_recv(tty_str, gdm_tty_recv_complete);
|
||||
|
||||
return TO_HOST_SUCCESS;
|
||||
}
|
||||
|
||||
static void gdm_tty_send_complete(void *arg)
|
||||
{
|
||||
struct tty_str *tty_str = (struct tty_str *)arg;
|
||||
struct tty_struct *tty;
|
||||
|
||||
if (!GDM_TTY_READY(tty_str))
|
||||
return;
|
||||
|
||||
tty = tty_port_tty_get(&tty_str->port);
|
||||
tty_wakeup(tty);
|
||||
tty_kref_put(tty);
|
||||
}
|
||||
|
||||
static int gdm_tty_write(struct tty_struct *tty, const unsigned char *buf, int len)
|
||||
{
|
||||
struct tty_str *tty_str = tty->driver_data;
|
||||
int remain = len;
|
||||
int sent_len = 0;
|
||||
int sending_len = 0;
|
||||
|
||||
if (!GDM_TTY_READY(tty_str))
|
||||
return -ENODEV;
|
||||
|
||||
if (!len)
|
||||
return 0;
|
||||
|
||||
while (1) {
|
||||
sending_len = remain > MUX_TX_MAX_SIZE ? MUX_TX_MAX_SIZE : remain;
|
||||
gdm_tty_send(tty_str,
|
||||
(void *)(buf+sent_len),
|
||||
sending_len,
|
||||
tty_str->tty_drv_index,
|
||||
gdm_tty_send_complete,
|
||||
tty_str
|
||||
);
|
||||
sent_len += sending_len;
|
||||
remain -= sending_len;
|
||||
if (remain <= 0)
|
||||
break;
|
||||
}
|
||||
|
||||
return len;
|
||||
}
|
||||
|
||||
static int gdm_tty_write_room(struct tty_struct *tty)
|
||||
{
|
||||
struct tty_str *tty_str = tty->driver_data;
|
||||
|
||||
if (!GDM_TTY_READY(tty_str))
|
||||
return -ENODEV;
|
||||
|
||||
return WRITE_SIZE;
|
||||
}
|
||||
|
||||
static int gdm_tty_tiocmget(struct tty_struct *tty)
|
||||
{
|
||||
struct tty_str *tty_str = tty->driver_data;
|
||||
|
||||
if (!GDM_TTY_READY(tty_str))
|
||||
return -ENODEV;
|
||||
|
||||
return (0 & ACM_CTRL_DTR ? TIOCM_DTR : 0) |
|
||||
(0 & ACM_CTRL_RTS ? TIOCM_RTS : 0) |
|
||||
(0 & ACM_CTRL_DSR ? TIOCM_DSR : 0) |
|
||||
(0 & ACM_CTRL_RI ? TIOCM_RI : 0) |
|
||||
(0 & ACM_CTRL_DCD ? TIOCM_CD : 0) |
|
||||
TIOCM_CTS;
|
||||
}
|
||||
|
||||
static int gdm_tty_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear)
|
||||
{
|
||||
struct tty_str *tty_str = tty->driver_data;
|
||||
|
||||
if (!GDM_TTY_READY(tty_str))
|
||||
return -ENODEV;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
int register_lte_tty_device(struct tty_dev *tty_dev, struct device *dev)
|
||||
{
|
||||
struct tty_str *tty_str;
|
||||
int i, j;
|
||||
|
||||
for (i = 0; i < TTY_MAX_COUNT; i++) {
|
||||
for (j = 0; j < GDM_TTY_MINOR; j++) {
|
||||
if (!g_tty_str[i][j])
|
||||
break;
|
||||
}
|
||||
|
||||
if (j == GDM_TTY_MINOR) {
|
||||
tty_dev->minor[i] = j;
|
||||
return -1;
|
||||
}
|
||||
|
||||
tty_str = kmalloc(sizeof(struct tty_str), GFP_KERNEL);
|
||||
if (!tty_str)
|
||||
return -ENOMEM;
|
||||
|
||||
g_tty_str[i][j] = tty_str;
|
||||
|
||||
tty_str->tty_dev = tty_dev;
|
||||
tty_str->tty_drv_index = i;
|
||||
tty_dev->minor[i] = j;
|
||||
tty_port_init(&tty_str->port);
|
||||
tty_str->port.ops = &gdm_tty_port_ops;
|
||||
|
||||
if (strcmp(DEVICE_STRING[i], "GCT-ATC") != 0)
|
||||
dev = NULL;
|
||||
tty_register_device(g_tty_drv[i], j, dev);
|
||||
}
|
||||
|
||||
acm_set_comm_feature(tty_str, 1);
|
||||
|
||||
for (i = 0; i < MAX_ISSUE_NUM; i++)
|
||||
gdm_tty_recv(tty_str, gdm_tty_recv_complete);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void unregister_lte_tty_device(struct tty_dev *tty_dev)
|
||||
{
|
||||
struct tty_str *tty_str;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < TTY_MAX_COUNT; i++) {
|
||||
if (tty_dev->minor[i] >= GDM_TTY_MINOR)
|
||||
continue;
|
||||
|
||||
tty_str = g_tty_str[i][tty_dev->minor[i]];
|
||||
if (!tty_str)
|
||||
continue;
|
||||
|
||||
tty_str->tty_dev = NULL;
|
||||
|
||||
if (!tty_str->port.count) {
|
||||
tty_unregister_device(g_tty_drv[i], tty_dev->minor[i]);
|
||||
tty_port_tty_set(&tty_str->port, NULL);
|
||||
kfree(tty_str);
|
||||
g_tty_str[i][tty_dev->minor[i]] = NULL;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void gdm_tty_set_termios(struct tty_struct *tty, struct ktermios *termios_old)
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
static const struct tty_operations gdm_tty_ops = {
|
||||
.open = gdm_tty_open,
|
||||
.close = gdm_tty_close,
|
||||
.write = gdm_tty_write,
|
||||
.write_room = gdm_tty_write_room,
|
||||
.tiocmget = gdm_tty_tiocmget,
|
||||
.tiocmset = gdm_tty_tiocmset,
|
||||
.set_termios = gdm_tty_set_termios,
|
||||
};
|
||||
|
||||
int register_lte_tty_driver(void)
|
||||
{
|
||||
struct tty_driver *tty_driver = NULL;
|
||||
int i;
|
||||
int ret;
|
||||
|
||||
for (i = 0; i < TTY_MAX_COUNT; i++) {
|
||||
tty_driver = alloc_tty_driver(GDM_TTY_MINOR);
|
||||
if (!tty_driver) {
|
||||
printk(KERN_ERR "glte: alloc_tty_driver fail\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
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->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
|
||||
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);
|
||||
|
||||
g_tty_drv[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 = g_tty_drv[i];
|
||||
if (tty_driver) {
|
||||
tty_unregister_driver(tty_driver);
|
||||
put_tty_driver(tty_driver);
|
||||
}
|
||||
}
|
||||
}
|
||||
59
drivers/staging/gdm724x/gdm_tty.h
Normal file
59
drivers/staging/gdm724x/gdm_tty.h
Normal file
@ -0,0 +1,59 @@
|
||||
/*
|
||||
* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
|
||||
*
|
||||
* This software is licensed under the terms of the GNU General Public
|
||||
* License version 2, as published by the Free Software Foundation, and
|
||||
* may be copied, distributed, and modified under those terms.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#ifndef _GDM_TTY_H_
|
||||
#define _GDM_TTY_H_
|
||||
|
||||
#include <linux/version.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_SUCCESS = 0,
|
||||
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 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, int minor, int complete));
|
||||
int (*send_control)(void *priv_dev, int request, int value, void *data, int len);
|
||||
u8 minor[2];
|
||||
};
|
||||
|
||||
struct tty_str {
|
||||
struct tty_dev *tty_dev;
|
||||
int tty_drv_index;
|
||||
struct tty_port port;
|
||||
};
|
||||
|
||||
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_ */
|
||||
|
||||
1047
drivers/staging/gdm724x/gdm_usb.c
Normal file
1047
drivers/staging/gdm724x/gdm_usb.c
Normal file
File diff suppressed because it is too large
Load Diff
110
drivers/staging/gdm724x/gdm_usb.h
Normal file
110
drivers/staging/gdm724x/gdm_usb.h
Normal file
@ -0,0 +1,110 @@
|
||||
/*
|
||||
* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
|
||||
*
|
||||
* This software is licensed under the terms of the GNU General Public
|
||||
* License version 2, as published by the Free Software Foundation, and
|
||||
* may be copied, distributed, and modified under those terms.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#ifndef _GDM_USB_H_
|
||||
#define _GDM_USB_H_
|
||||
|
||||
#include <linux/version.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 gdm_endian gdm_ed;
|
||||
struct tx_cxt tx;
|
||||
struct rx_cxt rx;
|
||||
struct delayed_work work_tx;
|
||||
struct delayed_work work_rx;
|
||||
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_ */
|
||||
55
drivers/staging/gdm724x/hci.h
Normal file
55
drivers/staging/gdm724x/hci.h
Normal file
@ -0,0 +1,55 @@
|
||||
/*
|
||||
* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
|
||||
*
|
||||
* This software is licensed under the terms of the GNU General Public
|
||||
* License version 2, as published by the Free Software Foundation, and
|
||||
* may be copied, distributed, and modified under those terms.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#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_ */
|
||||
93
drivers/staging/gdm724x/hci_packet.h
Normal file
93
drivers/staging/gdm724x/hci_packet.h
Normal file
@ -0,0 +1,93 @@
|
||||
/*
|
||||
* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
|
||||
*
|
||||
* This software is licensed under the terms of the GNU General Public
|
||||
* License version 2, as published by the Free Software Foundation, and
|
||||
* may be copied, distributed, and modified under those terms.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#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 {
|
||||
u16 cmd_evt;
|
||||
u16 len;
|
||||
u8 data[0];
|
||||
} __packed;
|
||||
|
||||
struct tlv {
|
||||
u8 type;
|
||||
u8 len;
|
||||
u8 *data[1];
|
||||
} __packed;
|
||||
|
||||
struct sdu_header {
|
||||
u16 cmd_evt;
|
||||
u16 len;
|
||||
u32 dftEpsId;
|
||||
u32 bearer_ID;
|
||||
u32 nic_type;
|
||||
} __packed;
|
||||
|
||||
struct sdu {
|
||||
u16 cmd_evt;
|
||||
u16 len;
|
||||
u32 dftEpsId;
|
||||
u32 bearer_ID;
|
||||
u32 nic_type;
|
||||
u8 data[0];
|
||||
} __packed;
|
||||
|
||||
struct multi_sdu {
|
||||
u16 cmd_evt;
|
||||
u16 len;
|
||||
u16 num_packet;
|
||||
u16 reserved;
|
||||
u8 data[0];
|
||||
} __packed;
|
||||
|
||||
struct hci_pdn_table_ind {
|
||||
u16 cmd_evt;
|
||||
u16 len;
|
||||
u8 activate;
|
||||
u32 dft_eps_id;
|
||||
u32 nic_type;
|
||||
u8 pdn_type;
|
||||
u8 ipv4_addr[4];
|
||||
u8 ipv6_intf_id[8];
|
||||
} __packed;
|
||||
|
||||
struct hci_connect_ind {
|
||||
u16 cmd_evt;
|
||||
u16 len;
|
||||
u32 connect;
|
||||
} __packed;
|
||||
|
||||
|
||||
#endif /* _HCI_PACKET_H_ */
|
||||
58
drivers/staging/gdm724x/lte_ioctl.h
Normal file
58
drivers/staging/gdm724x/lte_ioctl.h
Normal file
@ -0,0 +1,58 @@
|
||||
/*
|
||||
* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
|
||||
*
|
||||
* This software is licensed under the terms of the GNU General Public
|
||||
* License version 2, as published by the Free Software Foundation, and
|
||||
* may be copied, distributed, and modified under those terms.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#ifndef _LTE_IOCTL_H_
|
||||
#define _LTE_IOCTL_H_
|
||||
|
||||
#define SIOCLTEIOCTL SIOCDEVPRIVATE
|
||||
#define SIOCG_DATA 0x8D10
|
||||
#define SIOCS_DATA 0x8D11
|
||||
|
||||
/*
|
||||
* For historical reason, ioctl number and structure must be maintained
|
||||
*/
|
||||
enum {
|
||||
LINK_ON,
|
||||
LINK_OFF,
|
||||
GET_NETWORK_STATICS,
|
||||
RX_STOP,
|
||||
RX_RESUME,
|
||||
GET_DRV_VER,
|
||||
GET_SDIO_DEVICE_STATUS,
|
||||
GET_ENDIAN_INFO,
|
||||
};
|
||||
|
||||
struct dev_endian_t {
|
||||
unsigned char dev_endian;
|
||||
unsigned char host_endian;
|
||||
} __packed;
|
||||
|
||||
struct data_t {
|
||||
long len;
|
||||
void *buf;
|
||||
} __packed;
|
||||
|
||||
struct wm_req_t {
|
||||
union {
|
||||
char ifrn_name[IFNAMSIZ];
|
||||
} ifr_ifrn;
|
||||
unsigned short cmd;
|
||||
unsigned short data_id;
|
||||
struct data_t data;
|
||||
} __packed;
|
||||
|
||||
#ifndef ifr_name
|
||||
#define ifr_name (ifr_ifrn.ifrm_name)
|
||||
#endif
|
||||
|
||||
#endif /* _LTE_IOCTL_H_ */
|
||||
161
drivers/staging/gdm724x/netlink_k.c
Normal file
161
drivers/staging/gdm724x/netlink_k.c
Normal file
@ -0,0 +1,161 @@
|
||||
/*
|
||||
* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
|
||||
*
|
||||
* This software is licensed under the terms of the GNU General Public
|
||||
* License version 2, as published by the Free Software Foundation, and
|
||||
* may be copied, distributed, and modified under those terms.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#include <linux/version.h>
|
||||
#include <linux/export.h>
|
||||
#include <linux/etherdevice.h>
|
||||
#include <linux/netlink.h>
|
||||
#include <asm/byteorder.h>
|
||||
#include <net/sock.h>
|
||||
|
||||
#include "netlink_k.h"
|
||||
|
||||
#if defined(DEFINE_MUTEX)
|
||||
static DEFINE_MUTEX(netlink_mutex);
|
||||
#else
|
||||
static struct semaphore netlink_mutex;
|
||||
#define mutex_lock(x) down(x)
|
||||
#define mutex_unlock(x) up(x)
|
||||
#endif
|
||||
|
||||
#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) {
|
||||
printk(KERN_ERR "glte: nl cb - unregistered\n");
|
||||
return;
|
||||
}
|
||||
|
||||
if (skb->len < NLMSG_SPACE(0)) {
|
||||
printk(KERN_ERR "glte: 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) {
|
||||
printk(KERN_ERR "glte: 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 {
|
||||
printk(KERN_ERR "glte: 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;
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0)
|
||||
struct netlink_kernel_cfg cfg = {
|
||||
.input = netlink_rcv,
|
||||
};
|
||||
#endif
|
||||
|
||||
#if !defined(DEFINE_MUTEX)
|
||||
init_MUTEX(&netlink_mutex);
|
||||
#endif
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 6, 0)
|
||||
sock = netlink_kernel_create(&init_net, unit, 0, netlink_rcv, NULL,
|
||||
THIS_MODULE);
|
||||
#elif LINUX_VERSION_CODE < KERNEL_VERSION(3, 7, 0)
|
||||
sock = netlink_kernel_create(&init_net, unit, THIS_MODULE, &cfg);
|
||||
#else
|
||||
sock = netlink_kernel_create(&init_net, unit, &cfg);
|
||||
#endif
|
||||
|
||||
if (sock)
|
||||
rcv_cb = cb;
|
||||
|
||||
return sock;
|
||||
}
|
||||
|
||||
void netlink_exit(struct sock *sock)
|
||||
{
|
||||
sock_release(sock->sk_socket);
|
||||
}
|
||||
|
||||
int netlink_send(struct sock *sock, int group, u16 type, void *msg, int len)
|
||||
{
|
||||
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);
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 7, 0)
|
||||
NETLINK_CB(skb).pid = 0;
|
||||
#else
|
||||
NETLINK_CB(skb).portid = 0;
|
||||
#endif
|
||||
NETLINK_CB(skb).dst_group = 0;
|
||||
|
||||
ret = netlink_broadcast(sock, skb, 0, group+1, GFP_ATOMIC);
|
||||
if (!ret)
|
||||
return len;
|
||||
|
||||
if (ret != -ESRCH)
|
||||
printk(KERN_ERR "glte: 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;
|
||||
}
|
||||
25
drivers/staging/gdm724x/netlink_k.h
Normal file
25
drivers/staging/gdm724x/netlink_k.h
Normal file
@ -0,0 +1,25 @@
|
||||
/*
|
||||
* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
|
||||
*
|
||||
* This software is licensed under the terms of the GNU General Public
|
||||
* License version 2, as published by the Free Software Foundation, and
|
||||
* may be copied, distributed, and modified under those terms.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#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));
|
||||
void netlink_exit(struct sock *sock);
|
||||
int netlink_send(struct sock *sock, int group, u16 type, void *msg, int len);
|
||||
|
||||
#endif /* _NETLINK_K_H_ */
|
||||
Loading…
Reference in New Issue
Block a user