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thunderbolt: Expose get_route() to other files

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We are going to use it when we change the connection manager to handle
events itself. Also rename it to follow naming convention used in
functions exposed in ctl.h.

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>
This commit is contained in:
Mika Westerberg 2017-06-06 15:25:07 +03:00 committed by Greg Kroah-Hartman
parent 32af9434f0
commit ac6c44de50
2 changed files with 11 additions and 12 deletions
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19
drivers/thunderbolt/ctl.c
View file

@ -54,11 +54,6 @@ struct tb_ctl {
/* utility functions */
static u64 get_route(struct tb_cfg_header header)
{
return (u64) header.route_hi << 32 | header.route_lo;
}
static struct tb_cfg_header make_header(u64 route)
{
struct tb_cfg_header header = {
@ -66,7 +61,7 @@ static struct tb_cfg_header make_header(u64 route)
.route_lo = route,
};
/* check for overflow, route_hi is not 32 bits! */
WARN_ON(get_route(header) != route);
WARN_ON(tb_cfg_get_route(&header) != route);
return header;
}
@ -91,9 +86,9 @@ static int check_header(struct ctl_pkg *pkg, u32 len, enum tb_cfg_pkg_type type,
if (WARN(header->unknown != 1 << 9,
"header->unknown is %#x\n", header->unknown))
return -EIO;
if (WARN(route != get_route(*header),
if (WARN(route != tb_cfg_get_route(header),
"wrong route (expected %llx, got %llx)",
route, get_route(*header)))
route, tb_cfg_get_route(header)))
return -EIO;
return 0;
}
@ -126,10 +121,10 @@ static struct tb_cfg_result decode_error(struct ctl_pkg *response)
{
struct cfg_error_pkg *pkg = response->buffer;
struct tb_cfg_result res = { 0 };
res.response_route = get_route(pkg->header);
res.response_route = tb_cfg_get_route(&pkg->header);
res.response_port = 0;
res.err = check_header(response, sizeof(*pkg), TB_CFG_PKG_ERROR,
get_route(pkg->header));
tb_cfg_get_route(&pkg->header));
if (res.err)
return res;
@ -153,7 +148,7 @@ static struct tb_cfg_result parse_header(struct ctl_pkg *pkg, u32 len,
return decode_error(pkg);
res.response_port = 0; /* will be updated later for cfg_read/write */
res.response_route = get_route(*header);
res.response_route = tb_cfg_get_route(header);
res.err = check_header(pkg, len, type, route);
return res;
}
@ -294,7 +289,7 @@ static void tb_ctl_handle_plug_event(struct tb_ctl *ctl,
struct ctl_pkg *response)
{
struct cfg_event_pkg *pkg = response->buffer;
u64 route = get_route(pkg->header);
u64 route = tb_cfg_get_route(&pkg->header);
if (check_header(response, sizeof(*pkg), TB_CFG_PKG_EVENT, route)) {
tb_ctl_warn(ctl, "malformed TB_CFG_PKG_EVENT\n");

4
drivers/thunderbolt/ctl.h
View file

@ -38,6 +38,10 @@ struct tb_cfg_result {
enum tb_cfg_error tb_error; /* valid if err == 1 */
};
static inline u64 tb_cfg_get_route(const struct tb_cfg_header *header)
{
return (u64) header->route_hi << 32 | header->route_lo;
}
int tb_cfg_error(struct tb_ctl *ctl, u64 route, u32 port,
enum tb_cfg_error error);