diff options
Diffstat (limited to 'drivers/thunderbolt/switch.c')
| -rw-r--r-- | drivers/thunderbolt/switch.c | 82 |
1 files changed, 53 insertions, 29 deletions
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index 5668a44e0653..0439ab5ba5cc 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -168,7 +168,7 @@ static int nvm_validate_and_write(struct tb_switch *sw) static int nvm_authenticate_host(struct tb_switch *sw) { - int ret; + int ret = 0; /* * Root switch NVM upgrade requires that we disconnect the @@ -176,6 +176,8 @@ static int nvm_authenticate_host(struct tb_switch *sw) * already). */ if (!sw->safe_mode) { + u32 status; + ret = tb_domain_disconnect_all_paths(sw->tb); if (ret) return ret; @@ -184,7 +186,16 @@ static int nvm_authenticate_host(struct tb_switch *sw) * everything goes well so getting timeout is expected. */ ret = dma_port_flash_update_auth(sw->dma_port); - return ret == -ETIMEDOUT ? 0 : ret; + if (!ret || ret == -ETIMEDOUT) + return 0; + + /* + * Any error from update auth operation requires power + * cycling of the host router. + */ + tb_sw_warn(sw, "failed to authenticate NVM, power cycling\n"); + if (dma_port_flash_update_auth_status(sw->dma_port, &status) > 0) + nvm_set_auth_status(sw, status); } /* @@ -192,7 +203,7 @@ static int nvm_authenticate_host(struct tb_switch *sw) * switch. */ dma_port_power_cycle(sw->dma_port); - return 0; + return ret; } static int nvm_authenticate_device(struct tb_switch *sw) @@ -200,8 +211,16 @@ static int nvm_authenticate_device(struct tb_switch *sw) int ret, retries = 10; ret = dma_port_flash_update_auth(sw->dma_port); - if (ret && ret != -ETIMEDOUT) + switch (ret) { + case 0: + case -ETIMEDOUT: + case -EACCES: + case -EINVAL: + /* Power cycle is required */ + break; + default: return ret; + } /* * Poll here for the authentication status. It takes some time @@ -887,12 +906,13 @@ int tb_dp_port_set_hops(struct tb_port *port, unsigned int video, */ bool tb_dp_port_is_enabled(struct tb_port *port) { - u32 data; + u32 data[2]; - if (tb_port_read(port, &data, TB_CFG_PORT, port->cap_adap, 1)) + if (tb_port_read(port, data, TB_CFG_PORT, port->cap_adap, + ARRAY_SIZE(data))) return false; - return !!(data & (TB_DP_VIDEO_EN | TB_DP_AUX_EN)); + return !!(data[0] & (TB_DP_VIDEO_EN | TB_DP_AUX_EN)); } /** @@ -905,19 +925,21 @@ bool tb_dp_port_is_enabled(struct tb_port *port) */ int tb_dp_port_enable(struct tb_port *port, bool enable) { - u32 data; + u32 data[2]; int ret; - ret = tb_port_read(port, &data, TB_CFG_PORT, port->cap_adap, 1); + ret = tb_port_read(port, data, TB_CFG_PORT, port->cap_adap, + ARRAY_SIZE(data)); if (ret) return ret; if (enable) - data |= TB_DP_VIDEO_EN | TB_DP_AUX_EN; + data[0] |= TB_DP_VIDEO_EN | TB_DP_AUX_EN; else - data &= ~(TB_DP_VIDEO_EN | TB_DP_AUX_EN); + data[0] &= ~(TB_DP_VIDEO_EN | TB_DP_AUX_EN); - return tb_port_write(port, &data, TB_CFG_PORT, port->cap_adap, 1); + return tb_port_write(port, data, TB_CFG_PORT, port->cap_adap, + ARRAY_SIZE(data)); } /* switch utility functions */ @@ -1022,13 +1044,6 @@ static int tb_switch_set_authorized(struct tb_switch *sw, unsigned int val) if (sw->authorized) goto unlock; - /* - * Make sure there is no PCIe rescan ongoing when a new PCIe - * tunnel is created. Otherwise the PCIe rescan code might find - * the new tunnel too early. - */ - pci_lock_rescan_remove(); - switch (val) { /* Approve switch */ case 1: @@ -1048,8 +1063,6 @@ static int tb_switch_set_authorized(struct tb_switch *sw, unsigned int val) break; } - pci_unlock_rescan_remove(); - if (!ret) { sw->authorized = val; /* Notify status change to the userspace */ @@ -1243,8 +1256,6 @@ static ssize_t nvm_authenticate_store(struct device *dev, */ nvm_authenticate_start(sw); ret = nvm_authenticate_host(sw); - if (ret) - nvm_authenticate_complete(sw); } else { ret = nvm_authenticate_device(sw); } @@ -1670,13 +1681,16 @@ static int tb_switch_add_dma_port(struct tb_switch *sw) int ret; switch (sw->generation) { - case 3: - break; - case 2: /* Only root switch can be upgraded */ if (tb_route(sw)) return 0; + + /* fallthrough */ + case 3: + ret = tb_switch_set_uuid(sw); + if (ret) + return ret; break; default: @@ -1697,6 +1711,19 @@ static int tb_switch_add_dma_port(struct tb_switch *sw) return 0; /* + * If there is status already set then authentication failed + * when the dma_port_flash_update_auth() returned. Power cycling + * is not needed (it was done already) so only thing we do here + * is to unblock runtime PM of the root port. + */ + nvm_get_auth_status(sw, &status); + if (status) { + if (!tb_route(sw)) + nvm_authenticate_complete(sw); + return 0; + } + + /* * Check status of the previous flash authentication. If there * is one we need to power cycle the switch in any case to make * it functional again. @@ -1711,9 +1738,6 @@ static int tb_switch_add_dma_port(struct tb_switch *sw) if (status) { tb_sw_info(sw, "switch flash authentication failed\n"); - ret = tb_switch_set_uuid(sw); - if (ret) - return ret; nvm_set_auth_status(sw, status); } |