81a54b5e19
Currently the control channel (ctl.c) handles the one supported notification (PLUG_EVENT) and sends back ACK accordingly. However, we are going to add support for the internal connection manager (ICM) that needs to handle a different notifications. So instead of dealing everything in the control channel, we change the callback to take an arbitrary thunderbolt packet and convert the native connection manager to handle the event itself. In addition we only push replies we know of to the response FIFO. Everything else is treated as notification (or request) and is expected to be dealt by the connection manager implementation. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Yehezkel Bernat <yehezkel.bernat@intel.com> Reviewed-by: Michael Jamet <michael.jamet@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
/*
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* Thunderbolt Cactus Ridge driver - control channel and configuration commands
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*
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* Copyright (c) 2014 Andreas Noever <andreas.noever@gmail.com>
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*/
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#ifndef _TB_CFG
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#define _TB_CFG
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#include "nhi.h"
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#include "tb_msgs.h"
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/* control channel */
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struct tb_ctl;
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typedef void (*event_cb)(void *data, enum tb_cfg_pkg_type type,
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const void *buf, size_t size);
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struct tb_ctl *tb_ctl_alloc(struct tb_nhi *nhi, event_cb cb, void *cb_data);
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void tb_ctl_start(struct tb_ctl *ctl);
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void tb_ctl_stop(struct tb_ctl *ctl);
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void tb_ctl_free(struct tb_ctl *ctl);
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/* configuration commands */
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#define TB_CFG_DEFAULT_TIMEOUT 5000 /* msec */
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struct tb_cfg_result {
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u64 response_route;
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u32 response_port; /*
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* If err = 1 then this is the port that send the
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* error.
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* If err = 0 and if this was a cfg_read/write then
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* this is the the upstream port of the responding
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* switch.
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* Otherwise the field is set to zero.
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*/
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int err; /* negative errors, 0 for success, 1 for tb errors */
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enum tb_cfg_error tb_error; /* valid if err == 1 */
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};
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static inline u64 tb_cfg_get_route(const struct tb_cfg_header *header)
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{
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return (u64) header->route_hi << 32 | header->route_lo;
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}
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static inline struct tb_cfg_header tb_cfg_make_header(u64 route)
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{
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struct tb_cfg_header header = {
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.route_hi = route >> 32,
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.route_lo = route,
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};
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/* check for overflow, route_hi is not 32 bits! */
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WARN_ON(tb_cfg_get_route(&header) != route);
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return header;
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}
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int tb_cfg_error(struct tb_ctl *ctl, u64 route, u32 port,
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enum tb_cfg_error error);
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struct tb_cfg_result tb_cfg_reset(struct tb_ctl *ctl, u64 route,
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int timeout_msec);
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struct tb_cfg_result tb_cfg_read_raw(struct tb_ctl *ctl, void *buffer,
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u64 route, u32 port,
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enum tb_cfg_space space, u32 offset,
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u32 length, int timeout_msec);
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struct tb_cfg_result tb_cfg_write_raw(struct tb_ctl *ctl, const void *buffer,
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u64 route, u32 port,
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enum tb_cfg_space space, u32 offset,
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u32 length, int timeout_msec);
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int tb_cfg_read(struct tb_ctl *ctl, void *buffer, u64 route, u32 port,
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enum tb_cfg_space space, u32 offset, u32 length);
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int tb_cfg_write(struct tb_ctl *ctl, const void *buffer, u64 route, u32 port,
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enum tb_cfg_space space, u32 offset, u32 length);
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int tb_cfg_get_upstream_port(struct tb_ctl *ctl, u64 route);
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#endif
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