diff options
Diffstat (limited to 'drivers/thunderbolt/icm.c')
| -rw-r--r-- | drivers/thunderbolt/icm.c | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/drivers/thunderbolt/icm.c b/drivers/thunderbolt/icm.c index 0ffa4ec249ac..8ee340290219 100644 --- a/drivers/thunderbolt/icm.c +++ b/drivers/thunderbolt/icm.c @@ -54,6 +54,7 @@ * where ICM needs to be started manually * @vnd_cap: Vendor defined capability where PCIe2CIO mailbox resides * (only set when @upstream_port is not %NULL) + * @safe_mode: ICM is in safe mode * @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 @@ -65,6 +66,7 @@ struct icm { struct delayed_work rescan_work; struct pci_dev *upstream_port; int vnd_cap; + bool safe_mode; bool (*is_supported)(struct tb *tb); int (*get_mode)(struct tb *tb); int (*get_route)(struct tb *tb, u8 link, u8 depth, u64 *route); @@ -852,6 +854,10 @@ static int icm_firmware_init(struct tb *tb) ret = icm->get_mode(tb); switch (ret) { + case NHI_FW_SAFE_MODE: + icm->safe_mode = true; + break; + case NHI_FW_CM_MODE: /* Ask ICM to accept all Thunderbolt devices */ nhi_mailbox_cmd(nhi, NHI_MAILBOX_ALLOW_ALL_DEVS, 0); @@ -879,12 +885,20 @@ static int icm_firmware_init(struct tb *tb) static int icm_driver_ready(struct tb *tb) { + struct icm *icm = tb_priv(tb); int ret; ret = icm_firmware_init(tb); if (ret) return ret; + if (icm->safe_mode) { + tb_info(tb, "Thunderbolt host controller is in safe mode.\n"); + tb_info(tb, "You need to update NVM firmware of the controller before it can be used.\n"); + tb_info(tb, "For latest updates check https://thunderbolttechnology.net/updates.\n"); + return 0; + } + return __icm_driver_ready(tb, &tb->security_level); } @@ -975,12 +989,23 @@ static void icm_complete(struct tb *tb) static int icm_start(struct tb *tb) { + struct icm *icm = tb_priv(tb); int ret; - tb->root_switch = tb_switch_alloc(tb, &tb->dev, 0); + if (icm->safe_mode) + tb->root_switch = tb_switch_alloc_safe_mode(tb, &tb->dev, 0); + else + tb->root_switch = tb_switch_alloc(tb, &tb->dev, 0); if (!tb->root_switch) return -ENODEV; + /* + * NVM upgrade has not been tested on Apple systems and they + * don't provide images publicly either. To be on the safe side + * prevent root switch NVM upgrade on Macs for now. + */ + tb->root_switch->no_nvm_upgrade = is_apple(); + ret = tb_switch_add(tb->root_switch); if (ret) tb_switch_put(tb->root_switch); @@ -998,6 +1023,11 @@ static void icm_stop(struct tb *tb) nhi_mailbox_cmd(tb->nhi, NHI_MAILBOX_DRV_UNLOADS, 0); } +static int icm_disconnect_pcie_paths(struct tb *tb) +{ + return nhi_mailbox_cmd(tb->nhi, NHI_MAILBOX_DISCONNECT_PCIE_PATHS, 0); +} + /* Falcon Ridge and Alpine Ridge */ static const struct tb_cm_ops icm_fr_ops = { .driver_ready = icm_driver_ready, @@ -1009,6 +1039,7 @@ static const struct tb_cm_ops icm_fr_ops = { .approve_switch = icm_fr_approve_switch, .add_switch_key = icm_fr_add_switch_key, .challenge_switch_key = icm_fr_challenge_switch_key, + .disconnect_pcie_paths = icm_disconnect_pcie_paths, }; struct tb *icm_probe(struct tb_nhi *nhi) |