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thunderbolt: Move driver ready handling to struct icm 

Intel Titan Ridge uses slightly different format for ICM driver ready
response, so add a new ->driver_ready() callback to struct icm and move
the existing handling to a separate function which we then use in Falcon
Ridge and Alpine Ridge.

No functional changes intended.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
This commit is contained in:
Mika Westerberg 2017-10-06 18:14:13 +03:00
parent 0b0a0bd06e
commit 3080e197e9
2 changed files with 35 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
drivers/thunderbolt/icm.c
View File

@ -59,6 +59,7 @@
* @is_supported: Checks if we can support ICM on this controller
* @get_mode: Read and return the ICM firmware mode (optional)
* @get_route: Find a route string for given switch
* @driver_ready: Send driver ready message to ICM
* @device_connected: Handle device connected ICM message
* @device_disconnected: Handle device disconnected ICM message
* @xdomain_connected - Handle XDomain connected ICM message
@ -73,6 +74,8 @@ struct icm {
bool (*is_supported)(struct tb *tb);
int (*get_mode)(struct tb *tb);
int (*get_route)(struct tb *tb, u8 link, u8 depth, u64 *route);
int (*driver_ready)(struct tb *tb,
enum tb_security_level *security_level);
void (*device_connected)(struct tb *tb,
const struct icm_pkg_header *hdr);
void (*device_disconnected)(struct tb *tb,
@ -246,6 +249,27 @@ err_free:
return ret;
}
static int
icm_fr_driver_ready(struct tb *tb, enum tb_security_level *security_level)
{
struct icm_fr_pkg_driver_ready_response reply;
struct icm_pkg_driver_ready request = {
.hdr.code = ICM_DRIVER_READY,
};
int ret;
memset(&reply, 0, sizeof(reply));
ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
1, ICM_TIMEOUT);
if (ret)
return ret;
if (security_level)
*security_level = reply.security_level & ICM_FR_SLEVEL_MASK;
return 0;
}
static int icm_fr_approve_switch(struct tb *tb, struct tb_switch *sw)
{
struct icm_fr_pkg_approve_device request;
@ -869,21 +893,15 @@ static void icm_handle_event(struct tb *tb, enum tb_cfg_pkg_type type,
static int
__icm_driver_ready(struct tb *tb, enum tb_security_level *security_level)
{
struct icm_pkg_driver_ready_response reply;
struct icm_pkg_driver_ready request = {
.hdr.code = ICM_DRIVER_READY,
};
struct icm *icm = tb_priv(tb);
unsigned int retries = 50;
int ret;
memset(&reply, 0, sizeof(reply));
ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
1, ICM_TIMEOUT);
if (ret)
ret = icm->driver_ready(tb, security_level);
if (ret) {
tb_err(tb, "failed to send driver ready to ICM\n");
return ret;
if (security_level)
*security_level = reply.security_level & 0xf;
}
/*
* Hold on here until the switch config space is accessible so
@ -1329,6 +1347,7 @@ struct tb *icm_probe(struct tb_nhi *nhi)
case PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_NHI:
icm->is_supported = icm_fr_is_supported;
icm->get_route = icm_fr_get_route;
icm->driver_ready = icm_fr_driver_ready;
icm->device_connected = icm_fr_device_connected;
icm->device_disconnected = icm_fr_device_disconnected;
icm->xdomain_connected = icm_fr_xdomain_connected;
@ -1344,6 +1363,7 @@ struct tb *icm_probe(struct tb_nhi *nhi)
icm->is_supported = icm_ar_is_supported;
icm->get_mode = icm_ar_get_mode;
icm->get_route = icm_ar_get_route;
icm->driver_ready = icm_fr_driver_ready;
icm->device_connected = icm_fr_device_connected;
icm->device_disconnected = icm_fr_device_disconnected;
icm->xdomain_connected = icm_fr_xdomain_connected;

6
drivers/thunderbolt/tb_msgs.h
View File

@ -127,14 +127,16 @@ struct icm_pkg_driver_ready {
struct icm_pkg_header hdr;
};
struct icm_pkg_driver_ready_response {
/* Falcon Ridge & Alpine Ridge common messages */
struct icm_fr_pkg_driver_ready_response {
struct icm_pkg_header hdr;
u8 romver;
u8 ramver;
u16 security_level;
};
/* Falcon Ridge & Alpine Ridge common messages */
#define ICM_FR_SLEVEL_MASK 0xf
struct icm_fr_pkg_get_topology {
struct icm_pkg_header hdr;