Messages in this thread Patch in this message | | | From | Sjur Brændeland <> | Subject | [RFCv2 2/9] xshm: Channel config definitions for ST-E M7400 driver. | Date | Tue, 29 Nov 2011 20:39:03 +0100 |
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Netlink parameters used for configuring channels from user space.
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> --- include/linux/xshm/xshm_netlink.h | 95 +++++++++++++++++++++++++++++++++++++ 1 files changed, 95 insertions(+), 0 deletions(-) create mode 100644 include/linux/xshm/xshm_netlink.h
diff --git a/include/linux/xshm/xshm_netlink.h b/include/linux/xshm/xshm_netlink.h new file mode 100644 index 0000000..80b01de --- /dev/null +++ b/include/linux/xshm/xshm_netlink.h @@ -0,0 +1,95 @@ +/* + * Copyright (C) ST-Ericsson AB 2011 + * Author: Sjur Brendeland / sjur.brandeland@stericsson.com + * License terms: GNU General Public License (GPL) version 2 + */ + +#ifndef XSHM_NL_H_ +#define XSHM_NL_H_ + +#define XSHM_PROTO_VERSION 1 +#define XSHM_PROTO_SUB_VERSION 0 +#define XSHM_NETLINK_VERSION 1 +/** + * enum XSHM_COMMANDS - Attributes used for configuring XSHM device. + * + * @XSHM_C_ADD_STREAM_CHANNEL: Adds a Stream Channel. + * This will cause an instance of XSHM-CHR to be created. + * @XSHM_C_ADD_PACKET_CHANNEL: Adds a Packet Channel. + * This will cause an instance of CAIF-SHM to be created. + * @XSHM_C_COMMIT: formats and write Channel configuration data to + * Shared Memory. + * @XSHM_C_SET_ADDR: Writes the TOC address to GENO register. + * @XSHM_C_REGISTER: Initiates registration of the channel devices. + * This will cause xshm - character devices or + * CAIF network instances to be created. + * @XSHM_C_RESET: Reset the configuration data and removes the + * platform devices and their associated channel configuration. + * ipc_ready and caif_ready is set to false. + * + * A normal sequence of events is: [XSHM_C_RESET], [XSHM_C_ADD_X_CHANNEL], + * XSHM_C_COMMIT, XSHM_C_REGISTER, XSHM_C_SET_ADDR. + */ +enum XSHM_COMMANDS { + XSHM_C_ADD_STREAM_CHANNEL = 1, + XSHM_C_ADD_PACKET_CHANNEL, + XSHM_C_RESET, + XSHM_C_SET_ADDR, + XSHM_C_COMMIT, + XSHM_C_REGISTER, + __XSHM_C_VERIFY, + __XSHM_C_MAX +}; + +/** + * enum XSHM_ATTRIBUTES - Attributes used for configuring XSHM device. + * @XSHM_A_VERSION: Version of XSHM netlink protocol. Type NLA_U8 + * @XSHM_A_SUB_VERSION: Sub-version of XSHM netlink protocol. Type NLA_U8 + * @XSHM_A_NAME: Name of the channel, max 15 characters. Type NLA_NUL_STRING + * @XSHM_A_EXCL_GROUP: Devices may be part of a group. Devices from the + * same group are allowed to be open simultaneously, + * but devices from different groups cannot be opened + * at the same time. Type NLA_U8. + * @XSHM_A_RX_CHANNEL: The RX direction attributes. Type NLA_NESTED. + * Each channel may contain the attributes - XSHM_A_CHANNEL_SIZE, + * XSHM_A_CHANNEL_BUFFERS, XSHM_A_ALIGNMENT, XSHM_A_MTU. + * + * @XSHM_A_TX_CHANNEL: The TX direction attributes. Type NLA_NESTED. + * + * @XSHM_A_CHANNEL_SIZE: Size of the data area for a channel. Specified + * for RX, TX. Type NLA_U32, + * @XSHM_A_CHANNEL_BUFFERS: Numer of buffers for a packet channel. + * This attribute is only used for packet channels. Specified for RX, TX. + * Type NLA_U32, + * @XSHM_A_ALIGNMENT: Alignment for each packet in a buffer. This attribute + * is only used for packet channels. Specified for RX, TX.Type NLA_U8, + * @XSHM_A_MTU: Maximum Transfer Unit for packets in a buffer. + * This is only appplicable for packet channels. + * Specified for RX, TX.Type NLA_U16, + * @XSHM_A_PACKETS: Maximum number of packets in a buffer. Type NLA_U8 + * @XSHM_A_PRIORITY: Priority of the channel, legal range is 0-7 where + * 0 is lowest priority. Type NLA_U8. + * @XSHM_A_LATENCY: Latency for channel, value:0 means low latency + * and low bandwidth, + * value 1 means high latency and high bandwidth. Type NLA_U8. + */ +enum XSHM_ATTRIBUTES { + __XSHM_A_FLAGS = 1, /* Test flags: NLA_U32 */ + XSHM_A_VERSION, + XSHM_A_SUB_VERSION, + XSHM_A_NAME, + XSHM_A_EXCL_GROUP, + XSHM_A_RX_CHANNEL, + XSHM_A_TX_CHANNEL, + XSHM_A_CHANNEL_SIZE, + XSHM_A_CHANNEL_BUFFERS, + XSHM_A_ALIGNMENT, + XSHM_A_MTU, + XSHM_A_PACKETS, + XSHM_A_PRIORITY, + XSHM_A_LATENCY, + __XSHM_A_MAX, +}; +#define XSHM_A_MAX (__XSHM_A_MAX - 1) + +#endif /* XSHM_NL_H_ */ -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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