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| author | M Chetan Kumar <m.chetan.kumar@linux.intel.com> | 2022-02-10 21:04:45 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-02-13 11:55:28 +0000 |
| commit | 1f52d7b622854b8bd7a1be3de095ca2e1f77098e (patch) | |
| tree | ac8432ad3174813c258564f15b7a47f9134de6bc /drivers/net/wwan/iosm/iosm_ipc_imem.h | |
| parent | f126ec9d6e57729b3f7fad5d0e38bacfb81c8254 (diff) | |
| download | linux-1f52d7b622854b8bd7a1be3de095ca2e1f77098e.tar.gz linux-1f52d7b622854b8bd7a1be3de095ca2e1f77098e.tar.bz2 linux-1f52d7b622854b8bd7a1be3de095ca2e1f77098e.zip | |
net: wwan: iosm: Enable M.2 7360 WWAN card support
This patch enables Intel M.2 7360 WWAN card support on
IOSM Driver.
Control path implementation is a reuse whereas data path
implementation it uses a different protocol called as MUX
Aggregation. The major portion of this patch covers the MUX
Aggregation protocol implementation used for IP traffic
communication.
For M.2 7360 WWAN card, driver exposes 2 wwan AT ports for
control communication. The user space application or the
modem manager to use wwan AT port for data path establishment.
During probe, driver reads the mux protocol device capability
register to know the mux protocol version supported by device.
Base on which the right mux protocol is initialized for data
path communication.
An overview of an Aggregation Protocol
1> An IP packet is encapsulated with 16 octet padding header
to form a Datagram & the start offset of the Datagram is
indexed into Datagram Header (DH).
2> Multiple such Datagrams are composed & the start offset of
each DH is indexed into Datagram Table Header (DTH).
3> The Datagram Table (DT) is IP session specific & table_length
item in DTH holds the number of composed datagram pertaining
to that particular IP session.
4> And finally the offset of first DTH is indexed into DBH (Datagram
Block Header).
So in TX/RX flow Datagram Block (Datagram Block Header + Payload)is
exchanged between driver & device.
Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/wwan/iosm/iosm_ipc_imem.h')
| -rw-r--r-- | drivers/net/wwan/iosm/iosm_ipc_imem.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/wwan/iosm/iosm_ipc_imem.h b/drivers/net/wwan/iosm/iosm_ipc_imem.h index 98554e9beb01..5682e8d6be7b 100644 --- a/drivers/net/wwan/iosm/iosm_ipc_imem.h +++ b/drivers/net/wwan/iosm/iosm_ipc_imem.h @@ -317,6 +317,7 @@ enum ipc_phase { * @tdupdate_timer: Delay the TD update doorbell. * @fast_update_timer: forced head pointer update delay timer. * @td_alloc_timer: Timer for DL pipe TD allocation retry + * @adb_timer: Timer for finishing the ADB. * @rom_exit_code: Mapped boot rom exit code. * @enter_runtime: 1 means the transition to runtime phase was * executed. @@ -364,6 +365,7 @@ struct iosm_imem { struct hrtimer tdupdate_timer; struct hrtimer fast_update_timer; struct hrtimer td_alloc_timer; + struct hrtimer adb_timer; enum rom_exit_code rom_exit_code; u32 enter_runtime; struct completion ul_pend_sem; @@ -593,4 +595,7 @@ void ipc_imem_channel_init(struct iosm_imem *ipc_imem, enum ipc_ctype ctype, * Returns: 0 on success, -1 on failure */ int ipc_imem_devlink_trigger_chip_info(struct iosm_imem *ipc_imem); + +void ipc_imem_adb_timer_start(struct iosm_imem *ipc_imem); + #endif |