Lines Matching +full:dma +full:- +full:router
1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Thunderbolt driver - bus logic (NHI independent)
12 #include <linux/nvmem-provider.h>
30 * struct tb_nvm - Structure holding NVM information
37 * @non_active: Non-active portion NVMem device
46 * @vops: Router vendor specific NVM operations (optional)
78 * enum tb_switch_tmu_mode - TMU mode
80 * @TB_SWITCH_TMU_MODE_LOWRES: Uni-directional, normal mode
81 * @TB_SWITCH_TMU_MODE_HIFI_UNI: Uni-directional, HiFi mode
82 * @TB_SWITCH_TMU_MODE_HIFI_BI: Bi-directional, HiFi mode
83 * @TB_SWITCH_TMU_MODE_MEDRES_ENHANCED_UNI: Enhanced Uni-directional, MedRes mode
96 * struct tb_switch_tmu - Structure holding router TMU configuration
98 * @has_ucap: Does the switch support uni-directional mode
99 * @mode: TMU mode related to the upstream router. Reflects the HW
100 * setting. Don't care for host router.
101 * @mode_request: TMU mode requested to set. Related to upstream router.
102 * Don't care for host router.
112 * struct tb_switch - a thunderbolt switch
116 * @dma_port: If the switch has port supporting DMA configuration based
140 * @safe_mode: The switch is in safe-mode
156 * @max_usb3_credits: Router preferred number of buffers for USB 3.x
157 * @min_dp_aux_credits: Router preferred minimum number of buffers for DP AUX
158 * @min_dp_main_credits: Router preferred minimum number of buffers for DP MAIN
159 * @max_pcie_credits: Router preferred number of buffers for PCIe
160 * @max_dma_credits: Router preferred number of buffers for DMA/P2P
161 * @clx: CLx states on the upstream link of the router
166 * In USB4 terminology this structure represents a router.
216 * struct tb_bandwidth_group - Bandwidth management group
218 * @index: Index of the group (aka Group_ID). Valid values %1-%7
233 * struct tb_port - a thunderbolt port, part of a tb_switch
254 * @dma_credits: Number of credits allocated for DMA tunneling for all
255 * DMA paths through this port.
260 * non-zero.
294 * struct usb4_port - USB4 port device
316 * @index: Retimer index facing the router USB4 port
337 * struct tb_path_hop - routing information for a tb_path
344 * currently, %-1 to disable)
348 * @nfc_credits: Number of non-flow controlled buffers allocated for the
354 * next hop to take (on out_port->remote) is determined by
355 * next_hop_index. When routing packet to another switch (out->remote is
373 * enum tb_path_port - path options mask
389 * struct tb_path - a unidirectional path between two ports
428 /* HopIDs 0-7 are reserved by the Thunderbolt protocol */
431 * Support paths from the farthest (depth 6) router to the host and back
432 * to the same level (not necessarily to the same router).
450 * struct tb_cm_ops - Connection manager specific operations vector
473 * @approve_xdomain_paths: Approve (establish) XDomain DMA paths
474 * @disconnect_xdomain_paths: Disconnect XDomain DMA paths
475 * @usb4_switch_op: Optional proxy for USB4 router operations. If set
476 * this will be called whenever USB4 router operation is
477 * performed. If this returns %-EOPNOTSUPP then the
478 * native USB4 router operation is called.
482 * router operation.
523 return (void *)tb->privdata; in tb_priv()
531 * tb_upstream_port() - return the upstream port of a switch
535 * During switch alloc/init tb_upstream_port()->remote may be NULL, even for
542 return &sw->ports[sw->config.upstream_port_number]; in tb_upstream_port()
546 * tb_is_upstream_port() - Is the port upstream facing
554 const struct tb_port *upstream_port = tb_upstream_port(port->sw); in tb_is_upstream_port()
555 return port == upstream_port || port->dual_link_port == upstream_port; in tb_is_upstream_port()
560 return ((u64) sw->config.route_hi) << 32 | sw->config.route_lo; in tb_route()
567 port = route >> (sw->config.depth * 8); in tb_port_at()
568 if (WARN_ON(port > sw->config.max_port_number)) in tb_port_at()
570 return &sw->ports[port]; in tb_port_at()
574 * tb_port_has_remote() - Does the port have switch connected downstream
583 if (!port->remote) in tb_port_has_remote()
585 if (port->dual_link_port && port->link_nr) in tb_port_has_remote()
593 return port && port->port && port->config.type == TB_TYPE_PORT; in tb_port_is_null()
598 return port && port->config.type == TB_TYPE_NHI; in tb_port_is_nhi()
603 return port && port->config.type == TB_TYPE_PCIE_DOWN; in tb_port_is_pcie_down()
608 return port && port->config.type == TB_TYPE_PCIE_UP; in tb_port_is_pcie_up()
613 return port && port->config.type == TB_TYPE_DP_HDMI_IN; in tb_port_is_dpin()
618 return port && port->config.type == TB_TYPE_DP_HDMI_OUT; in tb_port_is_dpout()
623 return port && port->config.type == TB_TYPE_USB3_DOWN; in tb_port_is_usb3_down()
628 return port && port->config.type == TB_TYPE_USB3_UP; in tb_port_is_usb3_up()
634 if (sw->is_unplugged) in tb_sw_read()
635 return -ENODEV; in tb_sw_read()
636 return tb_cfg_read(sw->tb->ctl, in tb_sw_read()
648 if (sw->is_unplugged) in tb_sw_write()
649 return -ENODEV; in tb_sw_write()
650 return tb_cfg_write(sw->tb->ctl, in tb_sw_write()
662 if (port->sw->is_unplugged) in tb_port_read()
663 return -ENODEV; in tb_port_read()
664 return tb_cfg_read(port->sw->tb->ctl, in tb_port_read()
666 tb_route(port->sw), in tb_port_read()
667 port->port, in tb_port_read()
676 if (port->sw->is_unplugged) in tb_port_write()
677 return -ENODEV; in tb_port_write()
678 return tb_cfg_write(port->sw->tb->ctl, in tb_port_write()
680 tb_route(port->sw), in tb_port_write()
681 port->port, in tb_port_write()
687 #define tb_err(tb, fmt, arg...) dev_err(&(tb)->nhi->pdev->dev, fmt, ## arg)
688 #define tb_WARN(tb, fmt, arg...) dev_WARN(&(tb)->nhi->pdev->dev, fmt, ## arg)
689 #define tb_warn(tb, fmt, arg...) dev_warn(&(tb)->nhi->pdev->dev, fmt, ## arg)
690 #define tb_info(tb, fmt, arg...) dev_info(&(tb)->nhi->pdev->dev, fmt, ## arg)
691 #define tb_dbg(tb, fmt, arg...) dev_dbg(&(tb)->nhi->pdev->dev, fmt, ## arg)
696 level(__sw->tb, "%llx: " fmt, \
707 level(__port->sw->tb, "%llx:%u: " fmt, \
708 tb_route(__port->sw), __port->port, ## arg); \
759 get_device(&tb->dev); in tb_domain_get()
765 put_device(&tb->dev); in tb_domain_put()
813 * tb_switch_for_each_port() - Iterate over each switch port
820 for ((p) = &(sw)->ports[1]; \
821 (p) <= &(sw)->ports[(sw)->config.max_port_number]; (p)++)
826 get_device(&sw->dev); in tb_switch_get()
832 put_device(&sw->dev); in tb_switch_put()
837 return dev->type == &tb_switch_type; in tb_is_switch()
849 return tb_to_switch(sw->dev.parent); in tb_switch_parent()
853 * tb_switch_downstream_port() - Return downstream facing port of parent router
854 * @sw: Device router pointer
857 * the parent router.
867 * tb_switch_depth() - Returns depth of the connected router
868 * @sw: Router
872 return sw->config.depth; in tb_switch_depth()
877 return sw->config.vendor_id == PCI_VENDOR_ID_INTEL && in tb_switch_is_light_ridge()
878 sw->config.device_id == PCI_DEVICE_ID_INTEL_LIGHT_RIDGE; in tb_switch_is_light_ridge()
883 return sw->config.vendor_id == PCI_VENDOR_ID_INTEL && in tb_switch_is_eagle_ridge()
884 sw->config.device_id == PCI_DEVICE_ID_INTEL_EAGLE_RIDGE; in tb_switch_is_eagle_ridge()
889 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) { in tb_switch_is_cactus_ridge()
890 switch (sw->config.device_id) { in tb_switch_is_cactus_ridge()
901 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) { in tb_switch_is_falcon_ridge()
902 switch (sw->config.device_id) { in tb_switch_is_falcon_ridge()
913 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) { in tb_switch_is_alpine_ridge()
914 switch (sw->config.device_id) { in tb_switch_is_alpine_ridge()
928 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) { in tb_switch_is_titan_ridge()
929 switch (sw->config.device_id) { in tb_switch_is_titan_ridge()
941 if (sw->config.vendor_id == PCI_VENDOR_ID_INTEL) { in tb_switch_is_tiger_lake()
942 switch (sw->config.device_id) { in tb_switch_is_tiger_lake()
954 * tb_switch_is_icm() - Is the switch handled by ICM firmware
964 return !sw->config.enabled; in tb_switch_is_icm()
982 * tb_switch_tmu_is_configured() - Is given TMU mode configured
983 * @sw: Router whose mode to check
986 * Checks if given router TMU mode is configured to @mode. Note the
987 * router TMU might not be enabled to this mode.
992 return sw->tmu.mode_request == mode; in tb_switch_tmu_is_configured()
996 * tb_switch_tmu_is_enabled() - Checks if the specified TMU mode is enabled
997 * @sw: Router whose TMU mode to check
1004 return sw->tmu.mode != TB_SWITCH_TMU_MODE_OFF && in tb_switch_tmu_is_enabled()
1005 sw->tmu.mode == sw->tmu.mode_request; in tb_switch_tmu_is_enabled()
1016 * tb_switch_clx_is_enabled() - Checks if the CLx is enabled
1017 * @sw: Router to check for the CLx
1020 * Checks if the specified CLx is enabled on the router upstream link.
1023 * Not applicable for a host router.
1028 return sw->clx & clx; in tb_switch_clx_is_enabled()
1051 * tb_port_path_direction_downstream() - Checks if path directed downstream
1062 return src->sw->config.depth < dst->sw->config.depth; in tb_port_path_direction_downstream()
1067 return tb_port_is_null(port) && port->sw->credit_allocation; in tb_port_use_credit_allocation()
1071 * tb_for_each_port_on_path() - Iterate over each port on path
1083 * tb_for_each_upstream_port_on_path() - Iterate over each upstreamm port on path
1144 * tb_path_for_each_hop() - Iterate over each hop on path
1151 for ((hop) = &(path)->hops[0]; \
1152 (hop) <= &(path)->hops[(path)->path_length - 1]; (hop)++)
1179 return (fls64(route) + TB_ROUTE_SHIFT - 1) / TB_ROUTE_SHIFT; in tb_route_length()
1183 * tb_downstream_route() - get route to downstream switch
1191 return tb_route(port->sw) in tb_downstream_route()
1192 | ((u64) port->port << (port->sw->config.depth * 8)); in tb_downstream_route()
1208 return tb_to_switch(xd->dev.parent); in tb_xdomain_parent()
1212 * tb_xdomain_downstream_port() - Return downstream facing port of parent router
1219 return tb_port_at(xd->route, tb_xdomain_parent(xd)); in tb_xdomain_downstream_port()
1229 return dev->type == &tb_retimer_type; in tb_is_retimer()
1240 * usb4_switch_version() - Returns USB4 version of the router
1241 * @sw: Router to check
1243 * Returns major version of USB4 router (%1 for v1, %2 for v2 and so
1244 * on). Can be called to pre-USB4 router too and in that case returns %0.
1248 return FIELD_GET(USB4_VERSION_MAJOR_MASK, sw->config.thunderbolt_version); in usb4_switch_version()
1252 * tb_switch_is_usb4() - Is the switch USB4 compliant
1255 * Returns true if the @sw is USB4 compliant router, false otherwise.
1362 return dev->type == &usb4_port_device_type; in tb_is_usb4_port_device()
1378 return usb4->offline; in usb4_port_device_is_offline()