#include <linux/delay.h>
#include <linux/mutex.h>
#include <linux/pci.h>
+#include <linux/pm_runtime.h>
#include <linux/platform_data/x86/apple.h>
#include <linux/sizes.h>
#include <linux/slab.h>
#define PHY_PORT_CS1_LINK_STATE_MASK GENMASK(29, 26)
#define PHY_PORT_CS1_LINK_STATE_SHIFT 26
-#define ICM_TIMEOUT 5000 /* ms */
+#define ICM_TIMEOUT 5000 /* ms */
+#define ICM_APPROVE_TIMEOUT 10000 /* ms */
#define ICM_MAX_LINK 4
#define ICM_MAX_DEPTH 6
* @vnd_cap: Vendor defined capability where PCIe2CIO mailbox resides
* (only set when @upstream_port is not %NULL)
* @safe_mode: ICM is in safe mode
+ * @max_boot_acl: Maximum number of preboot ACL entries (%0 if not supported)
+ * @rpm: Does the controller support runtime PM (RTD3)
* @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
+ * @save_devices: Ask ICM to save devices to ACL when suspending (optional)
+ * @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
struct mutex request_lock;
struct delayed_work rescan_work;
struct pci_dev *upstream_port;
+ size_t max_boot_acl;
int vnd_cap;
bool safe_mode;
+ bool rpm;
bool (*is_supported)(struct tb *tb);
int (*get_mode)(struct tb *tb);
int (*get_route)(struct tb *tb, u8 link, u8 depth, u64 *route);
+ void (*save_devices)(struct tb *tb);
+ int (*driver_ready)(struct tb *tb,
+ enum tb_security_level *security_level,
+ size_t *nboot_acl, bool *rpm);
void (*device_connected)(struct tb *tb,
const struct icm_pkg_header *hdr);
void (*device_disconnected)(struct tb *tb,
struct tb *tb;
};
+struct ep_name_entry {
+ u8 len;
+ u8 type;
+ u8 data[0];
+};
+
+#define EP_NAME_INTEL_VSS 0x10
+
+/* Intel Vendor specific structure */
+struct intel_vss {
+ u16 vendor;
+ u16 model;
+ u8 mc;
+ u8 flags;
+ u16 pci_devid;
+ u32 nvm_version;
+};
+
+#define INTEL_VSS_FLAGS_RTD3 BIT(0)
+
+static const struct intel_vss *parse_intel_vss(const void *ep_name, size_t size)
+{
+ const void *end = ep_name + size;
+
+ while (ep_name < end) {
+ const struct ep_name_entry *ep = ep_name;
+
+ if (!ep->len)
+ break;
+ if (ep_name + ep->len > end)
+ break;
+
+ if (ep->type == EP_NAME_INTEL_VSS)
+ return (const struct intel_vss *)ep->data;
+
+ ep_name += ep->len;
+ }
+
+ return NULL;
+}
+
static inline struct tb *icm_to_tb(struct icm *icm)
{
return ((void *)icm - sizeof(struct tb));
return (u64)route_hi << 32 | route_lo;
}
+static inline u64 get_parent_route(u64 route)
+{
+ int depth = tb_route_length(route);
+ return depth ? route & ~(0xffULL << (depth - 1) * TB_ROUTE_SHIFT) : 0;
+}
+
static bool icm_match(const struct tb_cfg_request *req,
const struct ctl_pkg *pkg)
{
return ret;
}
+static void icm_fr_save_devices(struct tb *tb)
+{
+ nhi_mailbox_cmd(tb->nhi, NHI_MAILBOX_SAVE_DEVS, 0);
+}
+
+static int
+icm_fr_driver_ready(struct tb *tb, enum tb_security_level *security_level,
+ size_t *nboot_acl, bool *rpm)
+{
+ 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;
memset(&reply, 0, sizeof(reply));
/* Use larger timeout as establishing tunnels can take some time */
ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
- 1, 10000);
+ 1, ICM_APPROVE_TIMEOUT);
if (ret)
return ret;
return 0;
}
+static void add_switch(struct tb_switch *parent_sw, u64 route,
+ const uuid_t *uuid, const u8 *ep_name,
+ size_t ep_name_size, u8 connection_id, u8 connection_key,
+ u8 link, u8 depth, enum tb_security_level security_level,
+ bool authorized, bool boot)
+{
+ const struct intel_vss *vss;
+ struct tb_switch *sw;
+
+ pm_runtime_get_sync(&parent_sw->dev);
+
+ sw = tb_switch_alloc(parent_sw->tb, &parent_sw->dev, route);
+ if (!sw)
+ goto out;
+
+ sw->uuid = kmemdup(uuid, sizeof(*uuid), GFP_KERNEL);
+ sw->connection_id = connection_id;
+ sw->connection_key = connection_key;
+ sw->link = link;
+ sw->depth = depth;
+ sw->authorized = authorized;
+ sw->security_level = security_level;
+ sw->boot = boot;
+
+ vss = parse_intel_vss(ep_name, ep_name_size);
+ if (vss)
+ sw->rpm = !!(vss->flags & INTEL_VSS_FLAGS_RTD3);
+
+ /* Link the two switches now */
+ tb_port_at(route, parent_sw)->remote = tb_upstream_port(sw);
+ tb_upstream_port(sw)->remote = tb_port_at(route, parent_sw);
+
+ if (tb_switch_add(sw)) {
+ tb_port_at(tb_route(sw), parent_sw)->remote = NULL;
+ tb_switch_put(sw);
+ }
+
+out:
+ pm_runtime_mark_last_busy(&parent_sw->dev);
+ pm_runtime_put_autosuspend(&parent_sw->dev);
+}
+
+static void update_switch(struct tb_switch *parent_sw, struct tb_switch *sw,
+ u64 route, u8 connection_id, u8 connection_key,
+ u8 link, u8 depth, bool boot)
+{
+ /* Disconnect from parent */
+ tb_port_at(tb_route(sw), parent_sw)->remote = NULL;
+ /* Re-connect via updated port*/
+ tb_port_at(route, parent_sw)->remote = tb_upstream_port(sw);
+
+ /* Update with the new addressing information */
+ sw->config.route_hi = upper_32_bits(route);
+ sw->config.route_lo = lower_32_bits(route);
+ sw->connection_id = connection_id;
+ sw->connection_key = connection_key;
+ sw->link = link;
+ sw->depth = depth;
+ sw->boot = boot;
+
+ /* This switch still exists */
+ sw->is_unplugged = false;
+}
+
static void remove_switch(struct tb_switch *sw)
{
struct tb_switch *parent_sw;
tb_switch_remove(sw);
}
+static void add_xdomain(struct tb_switch *sw, u64 route,
+ const uuid_t *local_uuid, const uuid_t *remote_uuid,
+ u8 link, u8 depth)
+{
+ struct tb_xdomain *xd;
+
+ pm_runtime_get_sync(&sw->dev);
+
+ xd = tb_xdomain_alloc(sw->tb, &sw->dev, route, local_uuid, remote_uuid);
+ if (!xd)
+ goto out;
+
+ xd->link = link;
+ xd->depth = depth;
+
+ tb_port_at(route, sw)->xdomain = xd;
+
+ tb_xdomain_add(xd);
+
+out:
+ pm_runtime_mark_last_busy(&sw->dev);
+ pm_runtime_put_autosuspend(&sw->dev);
+}
+
+static void update_xdomain(struct tb_xdomain *xd, u64 route, u8 link)
+{
+ xd->link = link;
+ xd->route = route;
+ xd->is_unplugged = false;
+}
+
+static void remove_xdomain(struct tb_xdomain *xd)
+{
+ struct tb_switch *sw;
+
+ sw = tb_to_switch(xd->dev.parent);
+ tb_port_at(xd->route, sw)->xdomain = NULL;
+ tb_xdomain_remove(xd);
+}
+
static void
icm_fr_device_connected(struct tb *tb, const struct icm_pkg_header *hdr)
{
const struct icm_fr_event_device_connected *pkg =
(const struct icm_fr_event_device_connected *)hdr;
+ enum tb_security_level security_level;
struct tb_switch *sw, *parent_sw;
struct icm *icm = tb_priv(tb);
bool authorized = false;
+ struct tb_xdomain *xd;
u8 link, depth;
+ bool boot;
u64 route;
int ret;
depth = (pkg->link_info & ICM_LINK_INFO_DEPTH_MASK) >>
ICM_LINK_INFO_DEPTH_SHIFT;
authorized = pkg->link_info & ICM_LINK_INFO_APPROVED;
+ security_level = (pkg->hdr.flags & ICM_FLAGS_SLEVEL_MASK) >>
+ ICM_FLAGS_SLEVEL_SHIFT;
+ boot = pkg->link_info & ICM_LINK_INFO_BOOT;
- ret = icm->get_route(tb, link, depth, &route);
- if (ret) {
- tb_err(tb, "failed to find route string for switch at %u.%u\n",
- link, depth);
+ if (pkg->link_info & ICM_LINK_INFO_REJECTED) {
+ tb_info(tb, "switch at %u.%u was rejected by ICM firmware because topology limit exceeded\n",
+ link, depth);
return;
}
u8 phy_port, sw_phy_port;
parent_sw = tb_to_switch(sw->dev.parent);
- sw_phy_port = phy_port_from_route(tb_route(sw), sw->depth);
- phy_port = phy_port_from_route(route, depth);
+ sw_phy_port = tb_phy_port_from_link(sw->link);
+ phy_port = tb_phy_port_from_link(link);
/*
* On resume ICM will send us connected events for the
*/
if (sw->depth == depth && sw_phy_port == phy_port &&
!!sw->authorized == authorized) {
- tb_port_at(tb_route(sw), parent_sw)->remote = NULL;
- tb_port_at(route, parent_sw)->remote =
- tb_upstream_port(sw);
- sw->config.route_hi = upper_32_bits(route);
- sw->config.route_lo = lower_32_bits(route);
- sw->connection_id = pkg->connection_id;
- sw->connection_key = pkg->connection_key;
- sw->link = link;
- sw->depth = depth;
- sw->is_unplugged = false;
+ /*
+ * It was enumerated through another link so update
+ * route string accordingly.
+ */
+ if (sw->link != link) {
+ ret = icm->get_route(tb, link, depth, &route);
+ if (ret) {
+ tb_err(tb, "failed to update route string for switch at %u.%u\n",
+ link, depth);
+ tb_switch_put(sw);
+ return;
+ }
+ } else {
+ route = tb_route(sw);
+ }
+
+ update_switch(parent_sw, sw, route, pkg->connection_id,
+ pkg->connection_key, link, depth, boot);
tb_switch_put(sw);
return;
}
if (!sw) {
u8 dual_link;
- dual_link = dual_link_from_link(link);
- if (dual_link)
- sw = tb_switch_find_by_link_depth(tb, dual_link, depth);
+ dual_link = dual_link_from_link(link);
+ if (dual_link)
+ sw = tb_switch_find_by_link_depth(tb, dual_link, depth);
+ }
+ if (sw) {
+ remove_switch(sw);
+ tb_switch_put(sw);
+ }
+
+ /* Remove existing XDomain connection if found */
+ xd = tb_xdomain_find_by_link_depth(tb, link, depth);
+ if (xd) {
+ remove_xdomain(xd);
+ tb_xdomain_put(xd);
+ }
+
+ parent_sw = tb_switch_find_by_link_depth(tb, link, depth - 1);
+ if (!parent_sw) {
+ tb_err(tb, "failed to find parent switch for %u.%u\n",
+ link, depth);
+ return;
+ }
+
+ ret = icm->get_route(tb, link, depth, &route);
+ if (ret) {
+ tb_err(tb, "failed to find route string for switch at %u.%u\n",
+ link, depth);
+ tb_switch_put(parent_sw);
+ return;
+ }
+
+ add_switch(parent_sw, route, &pkg->ep_uuid, (const u8 *)pkg->ep_name,
+ sizeof(pkg->ep_name), pkg->connection_id,
+ pkg->connection_key, link, depth, security_level,
+ authorized, boot);
+
+ tb_switch_put(parent_sw);
+}
+
+static void
+icm_fr_device_disconnected(struct tb *tb, const struct icm_pkg_header *hdr)
+{
+ const struct icm_fr_event_device_disconnected *pkg =
+ (const struct icm_fr_event_device_disconnected *)hdr;
+ struct tb_switch *sw;
+ u8 link, depth;
+
+ link = pkg->link_info & ICM_LINK_INFO_LINK_MASK;
+ depth = (pkg->link_info & ICM_LINK_INFO_DEPTH_MASK) >>
+ ICM_LINK_INFO_DEPTH_SHIFT;
+
+ if (link > ICM_MAX_LINK || depth > ICM_MAX_DEPTH) {
+ tb_warn(tb, "invalid topology %u.%u, ignoring\n", link, depth);
+ return;
+ }
+
+ sw = tb_switch_find_by_link_depth(tb, link, depth);
+ if (!sw) {
+ tb_warn(tb, "no switch exists at %u.%u, ignoring\n", link,
+ depth);
+ return;
+ }
+
+ remove_switch(sw);
+ tb_switch_put(sw);
+}
+
+static void
+icm_fr_xdomain_connected(struct tb *tb, const struct icm_pkg_header *hdr)
+{
+ const struct icm_fr_event_xdomain_connected *pkg =
+ (const struct icm_fr_event_xdomain_connected *)hdr;
+ struct tb_xdomain *xd;
+ struct tb_switch *sw;
+ u8 link, depth;
+ bool approved;
+ u64 route;
+
+ /*
+ * After NVM upgrade adding root switch device fails because we
+ * initiated reset. During that time ICM might still send
+ * XDomain connected message which we ignore here.
+ */
+ if (!tb->root_switch)
+ return;
+
+ link = pkg->link_info & ICM_LINK_INFO_LINK_MASK;
+ depth = (pkg->link_info & ICM_LINK_INFO_DEPTH_MASK) >>
+ ICM_LINK_INFO_DEPTH_SHIFT;
+ approved = pkg->link_info & ICM_LINK_INFO_APPROVED;
+
+ if (link > ICM_MAX_LINK || depth > ICM_MAX_DEPTH) {
+ tb_warn(tb, "invalid topology %u.%u, ignoring\n", link, depth);
+ return;
+ }
+
+ route = get_route(pkg->local_route_hi, pkg->local_route_lo);
+
+ xd = tb_xdomain_find_by_uuid(tb, &pkg->remote_uuid);
+ if (xd) {
+ u8 xd_phy_port, phy_port;
+
+ xd_phy_port = phy_port_from_route(xd->route, xd->depth);
+ phy_port = phy_port_from_route(route, depth);
+
+ if (xd->depth == depth && xd_phy_port == phy_port) {
+ update_xdomain(xd, route, link);
+ tb_xdomain_put(xd);
+ return;
+ }
+
+ /*
+ * If we find an existing XDomain connection remove it
+ * now. We need to go through login handshake and
+ * everything anyway to be able to re-establish the
+ * connection.
+ */
+ remove_xdomain(xd);
+ tb_xdomain_put(xd);
+ }
+
+ /*
+ * Look if there already exists an XDomain in the same place
+ * than the new one and in that case remove it because it is
+ * most likely another host that got disconnected.
+ */
+ xd = tb_xdomain_find_by_link_depth(tb, link, depth);
+ if (!xd) {
+ u8 dual_link;
+
+ dual_link = dual_link_from_link(link);
+ if (dual_link)
+ xd = tb_xdomain_find_by_link_depth(tb, dual_link,
+ depth);
+ }
+ if (xd) {
+ remove_xdomain(xd);
+ tb_xdomain_put(xd);
+ }
+
+ /*
+ * If the user disconnected a switch during suspend and
+ * connected another host to the same port, remove the switch
+ * first.
+ */
+ sw = get_switch_at_route(tb->root_switch, route);
+ if (sw)
+ remove_switch(sw);
+
+ sw = tb_switch_find_by_link_depth(tb, link, depth);
+ if (!sw) {
+ tb_warn(tb, "no switch exists at %u.%u, ignoring\n", link,
+ depth);
+ return;
+ }
+
+ add_xdomain(sw, route, &pkg->local_uuid, &pkg->remote_uuid, link,
+ depth);
+ tb_switch_put(sw);
+}
+
+static void
+icm_fr_xdomain_disconnected(struct tb *tb, const struct icm_pkg_header *hdr)
+{
+ const struct icm_fr_event_xdomain_disconnected *pkg =
+ (const struct icm_fr_event_xdomain_disconnected *)hdr;
+ struct tb_xdomain *xd;
+
+ /*
+ * If the connection is through one or multiple devices, the
+ * XDomain device is removed along with them so it is fine if we
+ * cannot find it here.
+ */
+ xd = tb_xdomain_find_by_uuid(tb, &pkg->remote_uuid);
+ if (xd) {
+ remove_xdomain(xd);
+ tb_xdomain_put(xd);
+ }
+}
+
+static int
+icm_tr_driver_ready(struct tb *tb, enum tb_security_level *security_level,
+ size_t *nboot_acl, bool *rpm)
+{
+ struct icm_tr_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, 20000);
+ if (ret)
+ return ret;
+
+ if (security_level)
+ *security_level = reply.info & ICM_TR_INFO_SLEVEL_MASK;
+ if (nboot_acl)
+ *nboot_acl = (reply.info & ICM_TR_INFO_BOOT_ACL_MASK) >>
+ ICM_TR_INFO_BOOT_ACL_SHIFT;
+ if (rpm)
+ *rpm = !!(reply.hdr.flags & ICM_TR_FLAGS_RTD3);
+
+ return 0;
+}
+
+static int icm_tr_approve_switch(struct tb *tb, struct tb_switch *sw)
+{
+ struct icm_tr_pkg_approve_device request;
+ struct icm_tr_pkg_approve_device reply;
+ int ret;
+
+ memset(&request, 0, sizeof(request));
+ memcpy(&request.ep_uuid, sw->uuid, sizeof(request.ep_uuid));
+ request.hdr.code = ICM_APPROVE_DEVICE;
+ request.route_lo = sw->config.route_lo;
+ request.route_hi = sw->config.route_hi;
+ request.connection_id = sw->connection_id;
+
+ memset(&reply, 0, sizeof(reply));
+ ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
+ 1, ICM_APPROVE_TIMEOUT);
+ if (ret)
+ return ret;
+
+ if (reply.hdr.flags & ICM_FLAGS_ERROR) {
+ tb_warn(tb, "PCIe tunnel creation failed\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int icm_tr_add_switch_key(struct tb *tb, struct tb_switch *sw)
+{
+ struct icm_tr_pkg_add_device_key_response reply;
+ struct icm_tr_pkg_add_device_key request;
+ int ret;
+
+ memset(&request, 0, sizeof(request));
+ memcpy(&request.ep_uuid, sw->uuid, sizeof(request.ep_uuid));
+ request.hdr.code = ICM_ADD_DEVICE_KEY;
+ request.route_lo = sw->config.route_lo;
+ request.route_hi = sw->config.route_hi;
+ request.connection_id = sw->connection_id;
+ memcpy(request.key, sw->key, TB_SWITCH_KEY_SIZE);
+
+ memset(&reply, 0, sizeof(reply));
+ ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
+ 1, ICM_TIMEOUT);
+ if (ret)
+ return ret;
+
+ if (reply.hdr.flags & ICM_FLAGS_ERROR) {
+ tb_warn(tb, "Adding key to switch failed\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int icm_tr_challenge_switch_key(struct tb *tb, struct tb_switch *sw,
+ const u8 *challenge, u8 *response)
+{
+ struct icm_tr_pkg_challenge_device_response reply;
+ struct icm_tr_pkg_challenge_device request;
+ int ret;
+
+ memset(&request, 0, sizeof(request));
+ memcpy(&request.ep_uuid, sw->uuid, sizeof(request.ep_uuid));
+ request.hdr.code = ICM_CHALLENGE_DEVICE;
+ request.route_lo = sw->config.route_lo;
+ request.route_hi = sw->config.route_hi;
+ request.connection_id = sw->connection_id;
+ memcpy(request.challenge, challenge, TB_SWITCH_KEY_SIZE);
+
+ memset(&reply, 0, sizeof(reply));
+ ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
+ 1, ICM_TIMEOUT);
+ if (ret)
+ return ret;
+
+ if (reply.hdr.flags & ICM_FLAGS_ERROR)
+ return -EKEYREJECTED;
+ if (reply.hdr.flags & ICM_FLAGS_NO_KEY)
+ return -ENOKEY;
+
+ memcpy(response, reply.response, TB_SWITCH_KEY_SIZE);
+
+ return 0;
+}
+
+static int icm_tr_approve_xdomain_paths(struct tb *tb, struct tb_xdomain *xd)
+{
+ struct icm_tr_pkg_approve_xdomain_response reply;
+ struct icm_tr_pkg_approve_xdomain request;
+ int ret;
+
+ memset(&request, 0, sizeof(request));
+ request.hdr.code = ICM_APPROVE_XDOMAIN;
+ request.route_hi = upper_32_bits(xd->route);
+ request.route_lo = lower_32_bits(xd->route);
+ request.transmit_path = xd->transmit_path;
+ request.transmit_ring = xd->transmit_ring;
+ request.receive_path = xd->receive_path;
+ request.receive_ring = xd->receive_ring;
+ memcpy(&request.remote_uuid, xd->remote_uuid, sizeof(*xd->remote_uuid));
+
+ memset(&reply, 0, sizeof(reply));
+ ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
+ 1, ICM_TIMEOUT);
+ if (ret)
+ return ret;
+
+ if (reply.hdr.flags & ICM_FLAGS_ERROR)
+ return -EIO;
+
+ return 0;
+}
+
+static int icm_tr_xdomain_tear_down(struct tb *tb, struct tb_xdomain *xd,
+ int stage)
+{
+ struct icm_tr_pkg_disconnect_xdomain_response reply;
+ struct icm_tr_pkg_disconnect_xdomain request;
+ int ret;
+
+ memset(&request, 0, sizeof(request));
+ request.hdr.code = ICM_DISCONNECT_XDOMAIN;
+ request.stage = stage;
+ request.route_hi = upper_32_bits(xd->route);
+ request.route_lo = lower_32_bits(xd->route);
+ memcpy(&request.remote_uuid, xd->remote_uuid, sizeof(*xd->remote_uuid));
+
+ memset(&reply, 0, sizeof(reply));
+ ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
+ 1, ICM_TIMEOUT);
+ if (ret)
+ return ret;
+
+ if (reply.hdr.flags & ICM_FLAGS_ERROR)
+ return -EIO;
+
+ return 0;
+}
+
+static int icm_tr_disconnect_xdomain_paths(struct tb *tb, struct tb_xdomain *xd)
+{
+ int ret;
+
+ ret = icm_tr_xdomain_tear_down(tb, xd, 1);
+ if (ret)
+ return ret;
+
+ usleep_range(10, 50);
+ return icm_tr_xdomain_tear_down(tb, xd, 2);
+}
+
+static void
+icm_tr_device_connected(struct tb *tb, const struct icm_pkg_header *hdr)
+{
+ const struct icm_tr_event_device_connected *pkg =
+ (const struct icm_tr_event_device_connected *)hdr;
+ enum tb_security_level security_level;
+ struct tb_switch *sw, *parent_sw;
+ struct tb_xdomain *xd;
+ bool authorized, boot;
+ u64 route;
+
+ /*
+ * Currently we don't use the QoS information coming with the
+ * device connected message so simply just ignore that extra
+ * packet for now.
+ */
+ if (pkg->hdr.packet_id)
+ return;
+
+ /*
+ * After NVM upgrade adding root switch device fails because we
+ * initiated reset. During that time ICM might still send device
+ * connected message which we ignore here.
+ */
+ if (!tb->root_switch)
+ return;
+
+ route = get_route(pkg->route_hi, pkg->route_lo);
+ authorized = pkg->link_info & ICM_LINK_INFO_APPROVED;
+ security_level = (pkg->hdr.flags & ICM_FLAGS_SLEVEL_MASK) >>
+ ICM_FLAGS_SLEVEL_SHIFT;
+ boot = pkg->link_info & ICM_LINK_INFO_BOOT;
+
+ if (pkg->link_info & ICM_LINK_INFO_REJECTED) {
+ tb_info(tb, "switch at %llx was rejected by ICM firmware because topology limit exceeded\n",
+ route);
+ return;
+ }
+
+ sw = tb_switch_find_by_uuid(tb, &pkg->ep_uuid);
+ if (sw) {
+ /* Update the switch if it is still in the same place */
+ if (tb_route(sw) == route && !!sw->authorized == authorized) {
+ parent_sw = tb_to_switch(sw->dev.parent);
+ update_switch(parent_sw, sw, route, pkg->connection_id,
+ 0, 0, 0, boot);
+ tb_switch_put(sw);
+ return;
+ }
+
+ remove_switch(sw);
+ tb_switch_put(sw);
}
+
+ /* Another switch with the same address */
+ sw = tb_switch_find_by_route(tb, route);
if (sw) {
remove_switch(sw);
tb_switch_put(sw);
}
- parent_sw = tb_switch_find_by_link_depth(tb, link, depth - 1);
- if (!parent_sw) {
- tb_err(tb, "failed to find parent switch for %u.%u\n",
- link, depth);
- return;
+ /* XDomain connection with the same address */
+ xd = tb_xdomain_find_by_route(tb, route);
+ if (xd) {
+ remove_xdomain(xd);
+ tb_xdomain_put(xd);
}
- sw = tb_switch_alloc(tb, &parent_sw->dev, route);
- if (!sw) {
- tb_switch_put(parent_sw);
+ parent_sw = tb_switch_find_by_route(tb, get_parent_route(route));
+ if (!parent_sw) {
+ tb_err(tb, "failed to find parent switch for %llx\n", route);
return;
}
- sw->uuid = kmemdup(&pkg->ep_uuid, sizeof(pkg->ep_uuid), GFP_KERNEL);
- sw->connection_id = pkg->connection_id;
- sw->connection_key = pkg->connection_key;
- sw->link = link;
- sw->depth = depth;
- sw->authorized = authorized;
- sw->security_level = (pkg->hdr.flags & ICM_FLAGS_SLEVEL_MASK) >>
- ICM_FLAGS_SLEVEL_SHIFT;
-
- /* Link the two switches now */
- tb_port_at(route, parent_sw)->remote = tb_upstream_port(sw);
- tb_upstream_port(sw)->remote = tb_port_at(route, parent_sw);
+ add_switch(parent_sw, route, &pkg->ep_uuid, (const u8 *)pkg->ep_name,
+ sizeof(pkg->ep_name), pkg->connection_id,
+ 0, 0, 0, security_level, authorized, boot);
- ret = tb_switch_add(sw);
- if (ret) {
- tb_port_at(tb_route(sw), parent_sw)->remote = NULL;
- tb_switch_put(sw);
- }
tb_switch_put(parent_sw);
}
static void
-icm_fr_device_disconnected(struct tb *tb, const struct icm_pkg_header *hdr)
+icm_tr_device_disconnected(struct tb *tb, const struct icm_pkg_header *hdr)
{
- const struct icm_fr_event_device_disconnected *pkg =
- (const struct icm_fr_event_device_disconnected *)hdr;
+ const struct icm_tr_event_device_disconnected *pkg =
+ (const struct icm_tr_event_device_disconnected *)hdr;
struct tb_switch *sw;
- u8 link, depth;
-
- link = pkg->link_info & ICM_LINK_INFO_LINK_MASK;
- depth = (pkg->link_info & ICM_LINK_INFO_DEPTH_MASK) >>
- ICM_LINK_INFO_DEPTH_SHIFT;
+ u64 route;
- if (link > ICM_MAX_LINK || depth > ICM_MAX_DEPTH) {
- tb_warn(tb, "invalid topology %u.%u, ignoring\n", link, depth);
- return;
- }
+ route = get_route(pkg->route_hi, pkg->route_lo);
- sw = tb_switch_find_by_link_depth(tb, link, depth);
+ sw = tb_switch_find_by_route(tb, route);
if (!sw) {
- tb_warn(tb, "no switch exists at %u.%u, ignoring\n", link,
- depth);
+ tb_warn(tb, "no switch exists at %llx, ignoring\n", route);
return;
}
tb_switch_put(sw);
}
-static void remove_xdomain(struct tb_xdomain *xd)
-{
- struct tb_switch *sw;
-
- sw = tb_to_switch(xd->dev.parent);
- tb_port_at(xd->route, sw)->xdomain = NULL;
- tb_xdomain_remove(xd);
-}
-
static void
-icm_fr_xdomain_connected(struct tb *tb, const struct icm_pkg_header *hdr)
+icm_tr_xdomain_connected(struct tb *tb, const struct icm_pkg_header *hdr)
{
- const struct icm_fr_event_xdomain_connected *pkg =
- (const struct icm_fr_event_xdomain_connected *)hdr;
+ const struct icm_tr_event_xdomain_connected *pkg =
+ (const struct icm_tr_event_xdomain_connected *)hdr;
struct tb_xdomain *xd;
struct tb_switch *sw;
- u8 link, depth;
- bool approved;
u64 route;
- /*
- * After NVM upgrade adding root switch device fails because we
- * initiated reset. During that time ICM might still send
- * XDomain connected message which we ignore here.
- */
if (!tb->root_switch)
return;
- link = pkg->link_info & ICM_LINK_INFO_LINK_MASK;
- depth = (pkg->link_info & ICM_LINK_INFO_DEPTH_MASK) >>
- ICM_LINK_INFO_DEPTH_SHIFT;
- approved = pkg->link_info & ICM_LINK_INFO_APPROVED;
-
- if (link > ICM_MAX_LINK || depth > ICM_MAX_DEPTH) {
- tb_warn(tb, "invalid topology %u.%u, ignoring\n", link, depth);
- return;
- }
-
route = get_route(pkg->local_route_hi, pkg->local_route_lo);
xd = tb_xdomain_find_by_uuid(tb, &pkg->remote_uuid);
if (xd) {
- u8 xd_phy_port, phy_port;
-
- xd_phy_port = phy_port_from_route(xd->route, xd->depth);
- phy_port = phy_port_from_route(route, depth);
-
- if (xd->depth == depth && xd_phy_port == phy_port) {
- xd->link = link;
- xd->route = route;
- xd->is_unplugged = false;
+ if (xd->route == route) {
+ update_xdomain(xd, route, 0);
tb_xdomain_put(xd);
return;
}
- /*
- * If we find an existing XDomain connection remove it
- * now. We need to go through login handshake and
- * everything anyway to be able to re-establish the
- * connection.
- */
remove_xdomain(xd);
tb_xdomain_put(xd);
}
- /*
- * Look if there already exists an XDomain in the same place
- * than the new one and in that case remove it because it is
- * most likely another host that got disconnected.
- */
- xd = tb_xdomain_find_by_link_depth(tb, link, depth);
- if (!xd) {
- u8 dual_link;
-
- dual_link = dual_link_from_link(link);
- if (dual_link)
- xd = tb_xdomain_find_by_link_depth(tb, dual_link,
- depth);
- }
+ /* An existing xdomain with the same address */
+ xd = tb_xdomain_find_by_route(tb, route);
if (xd) {
remove_xdomain(xd);
tb_xdomain_put(xd);
if (sw)
remove_switch(sw);
- sw = tb_switch_find_by_link_depth(tb, link, depth);
+ sw = tb_switch_find_by_route(tb, get_parent_route(route));
if (!sw) {
- tb_warn(tb, "no switch exists at %u.%u, ignoring\n", link,
- depth);
- return;
- }
-
- xd = tb_xdomain_alloc(sw->tb, &sw->dev, route,
- &pkg->local_uuid, &pkg->remote_uuid);
- if (!xd) {
- tb_switch_put(sw);
+ tb_warn(tb, "no switch exists at %llx, ignoring\n", route);
return;
}
- xd->link = link;
- xd->depth = depth;
-
- tb_port_at(route, sw)->xdomain = xd;
-
- tb_xdomain_add(xd);
+ add_xdomain(sw, route, &pkg->local_uuid, &pkg->remote_uuid, 0, 0);
tb_switch_put(sw);
}
static void
-icm_fr_xdomain_disconnected(struct tb *tb, const struct icm_pkg_header *hdr)
+icm_tr_xdomain_disconnected(struct tb *tb, const struct icm_pkg_header *hdr)
{
- const struct icm_fr_event_xdomain_disconnected *pkg =
- (const struct icm_fr_event_xdomain_disconnected *)hdr;
+ const struct icm_tr_event_xdomain_disconnected *pkg =
+ (const struct icm_tr_event_xdomain_disconnected *)hdr;
struct tb_xdomain *xd;
+ u64 route;
- /*
- * If the connection is through one or multiple devices, the
- * XDomain device is removed along with them so it is fine if we
- * cannot find it here.
- */
- xd = tb_xdomain_find_by_uuid(tb, &pkg->remote_uuid);
+ route = get_route(pkg->route_hi, pkg->route_lo);
+
+ xd = tb_xdomain_find_by_route(tb, route);
if (xd) {
remove_xdomain(xd);
tb_xdomain_put(xd);
static int icm_ar_get_mode(struct tb *tb)
{
struct tb_nhi *nhi = tb->nhi;
- int retries = 5;
+ int retries = 60;
u32 val;
do {
val = ioread32(nhi->iobase + REG_FW_STS);
if (val & REG_FW_STS_NVM_AUTH_DONE)
break;
- msleep(30);
+ msleep(50);
} while (--retries);
if (!retries) {
return nhi_mailbox_mode(nhi);
}
+static int
+icm_ar_driver_ready(struct tb *tb, enum tb_security_level *security_level,
+ size_t *nboot_acl, bool *rpm)
+{
+ struct icm_ar_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.info & ICM_AR_INFO_SLEVEL_MASK;
+ if (nboot_acl && (reply.info & ICM_AR_INFO_BOOT_ACL_SUPPORTED))
+ *nboot_acl = (reply.info & ICM_AR_INFO_BOOT_ACL_MASK) >>
+ ICM_AR_INFO_BOOT_ACL_SHIFT;
+ if (rpm)
+ *rpm = !!(reply.hdr.flags & ICM_AR_FLAGS_RTD3);
+
+ return 0;
+}
+
static int icm_ar_get_route(struct tb *tb, u8 link, u8 depth, u64 *route)
{
struct icm_ar_pkg_get_route_response reply;
return 0;
}
+static int icm_ar_get_boot_acl(struct tb *tb, uuid_t *uuids, size_t nuuids)
+{
+ struct icm_ar_pkg_preboot_acl_response reply;
+ struct icm_ar_pkg_preboot_acl request = {
+ .hdr = { .code = ICM_PREBOOT_ACL },
+ };
+ int ret, i;
+
+ memset(&reply, 0, sizeof(reply));
+ ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
+ 1, ICM_TIMEOUT);
+ if (ret)
+ return ret;
+
+ if (reply.hdr.flags & ICM_FLAGS_ERROR)
+ return -EIO;
+
+ for (i = 0; i < nuuids; i++) {
+ u32 *uuid = (u32 *)&uuids[i];
+
+ uuid[0] = reply.acl[i].uuid_lo;
+ uuid[1] = reply.acl[i].uuid_hi;
+
+ if (uuid[0] == 0xffffffff && uuid[1] == 0xffffffff) {
+ /* Map empty entries to null UUID */
+ uuid[0] = 0;
+ uuid[1] = 0;
+ } else if (uuid[0] != 0 || uuid[1] != 0) {
+ /* Upper two DWs are always one's */
+ uuid[2] = 0xffffffff;
+ uuid[3] = 0xffffffff;
+ }
+ }
+
+ return ret;
+}
+
+static int icm_ar_set_boot_acl(struct tb *tb, const uuid_t *uuids,
+ size_t nuuids)
+{
+ struct icm_ar_pkg_preboot_acl_response reply;
+ struct icm_ar_pkg_preboot_acl request = {
+ .hdr = {
+ .code = ICM_PREBOOT_ACL,
+ .flags = ICM_FLAGS_WRITE,
+ },
+ };
+ int ret, i;
+
+ for (i = 0; i < nuuids; i++) {
+ const u32 *uuid = (const u32 *)&uuids[i];
+
+ if (uuid_is_null(&uuids[i])) {
+ /*
+ * Map null UUID to the empty (all one) entries
+ * for ICM.
+ */
+ request.acl[i].uuid_lo = 0xffffffff;
+ request.acl[i].uuid_hi = 0xffffffff;
+ } else {
+ /* Two high DWs need to be set to all one */
+ if (uuid[2] != 0xffffffff || uuid[3] != 0xffffffff)
+ return -EINVAL;
+
+ request.acl[i].uuid_lo = uuid[0];
+ request.acl[i].uuid_hi = uuid[1];
+ }
+ }
+
+ memset(&reply, 0, sizeof(reply));
+ ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
+ 1, ICM_TIMEOUT);
+ if (ret)
+ return ret;
+
+ if (reply.hdr.flags & ICM_FLAGS_ERROR)
+ return -EIO;
+
+ return 0;
+}
+
static void icm_handle_notification(struct work_struct *work)
{
struct icm_notification *n = container_of(work, typeof(*n), work);
}
static int
-__icm_driver_ready(struct tb *tb, enum tb_security_level *security_level)
+__icm_driver_ready(struct tb *tb, enum tb_security_level *security_level,
+ size_t *nboot_acl, bool *rpm)
{
- struct icm_pkg_driver_ready_response reply;
- struct icm_pkg_driver_ready request = {
- .hdr.code = ICM_DRIVER_READY,
- };
- unsigned int retries = 10;
+ 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, nboot_acl, rpm);
+ 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
msleep(50);
} while (--retries);
+ tb_err(tb, "failed to read root switch config space, giving up\n");
return -ETIMEDOUT;
}
struct icm *icm = tb_priv(tb);
u32 val;
+ if (!icm->upstream_port)
+ return -ENODEV;
+
/* Put ARC to wait for CIO reset event to happen */
val = ioread32(nhi->iobase + REG_FW_STS);
val |= REG_FW_STS_CIO_RESET_REQ;
break;
default:
+ if (ret < 0)
+ return ret;
+
tb_err(tb, "ICM firmware is in wrong mode: %u\n", ret);
return -ENODEV;
}
return 0;
}
- return __icm_driver_ready(tb, &tb->security_level);
+ ret = __icm_driver_ready(tb, &tb->security_level, &tb->nboot_acl,
+ &icm->rpm);
+ if (ret)
+ return ret;
+
+ /*
+ * Make sure the number of supported preboot ACL matches what we
+ * expect or disable the whole feature.
+ */
+ if (tb->nboot_acl > icm->max_boot_acl)
+ tb->nboot_acl = 0;
+
+ return 0;
}
static int icm_suspend(struct tb *tb)
{
- int ret;
+ struct icm *icm = tb_priv(tb);
- ret = nhi_mailbox_cmd(tb->nhi, NHI_MAILBOX_SAVE_DEVS, 0);
- if (ret)
- tb_info(tb, "Ignoring mailbox command error (%d) in %s\n",
- ret, __func__);
+ if (icm->save_devices)
+ icm->save_devices(tb);
+ nhi_mailbox_cmd(tb->nhi, NHI_MAILBOX_DRV_UNLOADS, 0);
return 0;
}
* Now all existing children should be resumed, start events
* from ICM to get updated status.
*/
- __icm_driver_ready(tb, NULL);
+ __icm_driver_ready(tb, NULL, NULL, NULL);
/*
* We do not get notifications of devices that have been
queue_delayed_work(tb->wq, &icm->rescan_work, msecs_to_jiffies(500));
}
+static int icm_runtime_suspend(struct tb *tb)
+{
+ nhi_mailbox_cmd(tb->nhi, NHI_MAILBOX_DRV_UNLOADS, 0);
+ return 0;
+}
+
+static int icm_runtime_resume(struct tb *tb)
+{
+ /*
+ * We can reuse the same resume functionality than with system
+ * suspend.
+ */
+ icm_complete(tb);
+ return 0;
+}
+
static int icm_start(struct tb *tb)
{
struct icm *icm = tb_priv(tb);
* prevent root switch NVM upgrade on Macs for now.
*/
tb->root_switch->no_nvm_upgrade = x86_apple_machine;
+ tb->root_switch->rpm = icm->rpm;
ret = tb_switch_add(tb->root_switch);
if (ret) {
return nhi_mailbox_cmd(tb->nhi, NHI_MAILBOX_DISCONNECT_PCIE_PATHS, 0);
}
-/* Falcon Ridge and Alpine Ridge */
+/* Falcon Ridge */
static const struct tb_cm_ops icm_fr_ops = {
.driver_ready = icm_driver_ready,
.start = icm_start,
.disconnect_xdomain_paths = icm_fr_disconnect_xdomain_paths,
};
+/* Alpine Ridge */
+static const struct tb_cm_ops icm_ar_ops = {
+ .driver_ready = icm_driver_ready,
+ .start = icm_start,
+ .stop = icm_stop,
+ .suspend = icm_suspend,
+ .complete = icm_complete,
+ .runtime_suspend = icm_runtime_suspend,
+ .runtime_resume = icm_runtime_resume,
+ .handle_event = icm_handle_event,
+ .get_boot_acl = icm_ar_get_boot_acl,
+ .set_boot_acl = icm_ar_set_boot_acl,
+ .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,
+ .approve_xdomain_paths = icm_fr_approve_xdomain_paths,
+ .disconnect_xdomain_paths = icm_fr_disconnect_xdomain_paths,
+};
+
+/* Titan Ridge */
+static const struct tb_cm_ops icm_tr_ops = {
+ .driver_ready = icm_driver_ready,
+ .start = icm_start,
+ .stop = icm_stop,
+ .suspend = icm_suspend,
+ .complete = icm_complete,
+ .runtime_suspend = icm_runtime_suspend,
+ .runtime_resume = icm_runtime_resume,
+ .handle_event = icm_handle_event,
+ .get_boot_acl = icm_ar_get_boot_acl,
+ .set_boot_acl = icm_ar_set_boot_acl,
+ .approve_switch = icm_tr_approve_switch,
+ .add_switch_key = icm_tr_add_switch_key,
+ .challenge_switch_key = icm_tr_challenge_switch_key,
+ .disconnect_pcie_paths = icm_disconnect_pcie_paths,
+ .approve_xdomain_paths = icm_tr_approve_xdomain_paths,
+ .disconnect_xdomain_paths = icm_tr_disconnect_xdomain_paths,
+};
+
struct tb *icm_probe(struct tb_nhi *nhi)
{
struct icm *icm;
case PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_NHI:
icm->is_supported = icm_fr_is_supported;
icm->get_route = icm_fr_get_route;
+ icm->save_devices = icm_fr_save_devices;
+ 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;
case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_LP_NHI:
case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_4C_NHI:
case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_2C_NHI:
+ icm->max_boot_acl = ICM_AR_PREBOOT_ACL_ENTRIES;
icm->is_supported = icm_ar_is_supported;
icm->get_mode = icm_ar_get_mode;
icm->get_route = icm_ar_get_route;
+ icm->save_devices = icm_fr_save_devices;
+ icm->driver_ready = icm_ar_driver_ready;
icm->device_connected = icm_fr_device_connected;
icm->device_disconnected = icm_fr_device_disconnected;
icm->xdomain_connected = icm_fr_xdomain_connected;
icm->xdomain_disconnected = icm_fr_xdomain_disconnected;
- tb->cm_ops = &icm_fr_ops;
+ tb->cm_ops = &icm_ar_ops;
+ break;
+
+ case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_2C_NHI:
+ case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_4C_NHI:
+ icm->max_boot_acl = ICM_AR_PREBOOT_ACL_ENTRIES;
+ icm->is_supported = icm_ar_is_supported;
+ icm->get_mode = icm_ar_get_mode;
+ icm->driver_ready = icm_tr_driver_ready;
+ icm->device_connected = icm_tr_device_connected;
+ icm->device_disconnected = icm_tr_device_disconnected;
+ icm->xdomain_connected = icm_tr_xdomain_connected;
+ icm->xdomain_disconnected = icm_tr_xdomain_disconnected;
+ tb->cm_ops = &icm_tr_ops;
break;
}
projects / mirror_ubuntu-bionic-kernel.git / blobdiff