ntb_hw(4): Add sysctls for administrative/test link config, state
dev.ntb_hw.0.admin_up=0/1: Like ifconfig UP/DOWN. dev.ntb_hw.0.active=0/1: Like ifconfig 'status' Reviewed by: ngie Sponsored by: EMC / Isilon Storage Division Differential Revision: https://reviews.freebsd.org/D6429
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00b8e9fe52
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2d3192783d
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=300100
@ -364,6 +364,8 @@ static bool ntb_poll_link(struct ntb_softc *ntb);
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static void save_bar_parameters(struct ntb_pci_bar_info *bar);
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static void ntb_sysctl_init(struct ntb_softc *);
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static int sysctl_handle_features(SYSCTL_HANDLER_ARGS);
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static int sysctl_handle_link_admin(SYSCTL_HANDLER_ARGS);
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static int sysctl_handle_link_status_human(SYSCTL_HANDLER_ARGS);
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static int sysctl_handle_link_status(SYSCTL_HANDLER_ARGS);
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static int sysctl_handle_register(SYSCTL_HANDLER_ARGS);
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@ -2132,6 +2134,8 @@ ntb_link_enable(struct ntb_softc *ntb, enum ntb_speed s __unused,
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{
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uint32_t cntl;
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ntb_printf(2, "%s\n", __func__);
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if (ntb->type == NTB_ATOM) {
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pci_write_config(ntb->device, NTB_PPD_OFFSET,
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ntb->ppd | ATOM_PPD_INIT_LINK, 4);
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@ -2170,6 +2174,8 @@ ntb_link_disable(struct ntb_softc *ntb)
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{
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uint32_t cntl;
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ntb_printf(2, "%s\n", __func__);
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if (ntb->conn_type == NTB_CONN_TRANSPARENT) {
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ntb_link_event(ntb);
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return (0);
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@ -2185,6 +2191,23 @@ ntb_link_disable(struct ntb_softc *ntb)
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return (0);
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}
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bool
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ntb_link_enabled(struct ntb_softc *ntb)
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{
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uint32_t cntl;
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if (ntb->type == NTB_ATOM) {
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cntl = pci_read_config(ntb->device, NTB_PPD_OFFSET, 4);
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return ((cntl & ATOM_PPD_INIT_LINK) != 0);
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}
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if (ntb->conn_type == NTB_CONN_TRANSPARENT)
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return (true);
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cntl = ntb_reg_read(4, ntb->reg->ntb_ctl);
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return ((cntl & NTB_CNTL_LINK_DISABLE) == 0);
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}
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static void
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recover_atom_link(void *arg)
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{
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@ -2304,16 +2327,26 @@ SYSCTL_NODE(_hw_ntb, OID_AUTO, debug_info, CTLFLAG_RW, 0,
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static void
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ntb_sysctl_init(struct ntb_softc *ntb)
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{
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struct sysctl_oid_list *tree_par, *regpar, *statpar, *errpar;
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struct sysctl_oid_list *globals, *tree_par, *regpar, *statpar, *errpar;
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struct sysctl_ctx_list *ctx;
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struct sysctl_oid *tree, *tmptree;
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ctx = device_get_sysctl_ctx(ntb->device);
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globals = SYSCTL_CHILDREN(device_get_sysctl_tree(ntb->device));
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tree = SYSCTL_ADD_NODE(ctx,
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SYSCTL_CHILDREN(device_get_sysctl_tree(ntb->device)), OID_AUTO,
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"debug_info", CTLFLAG_RD, NULL,
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"Driver state, statistics, and HW registers");
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SYSCTL_ADD_PROC(ctx, globals, OID_AUTO, "link_status",
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CTLFLAG_RD | CTLTYPE_STRING, ntb, 0,
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sysctl_handle_link_status_human, "A",
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"Link status (human readable)");
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SYSCTL_ADD_PROC(ctx, globals, OID_AUTO, "active",
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CTLFLAG_RD | CTLTYPE_UINT, ntb, 0, sysctl_handle_link_status,
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"IU", "Link status (1=active, 0=inactive)");
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SYSCTL_ADD_PROC(ctx, globals, OID_AUTO, "admin_up",
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CTLFLAG_RW | CTLTYPE_UINT, ntb, 0, sysctl_handle_link_admin,
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"IU", "Set/get interface status (1=UP, 0=DOWN)");
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tree = SYSCTL_ADD_NODE(ctx, globals, OID_AUTO, "debug_info",
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CTLFLAG_RD, NULL, "Driver state, statistics, and HW registers");
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tree_par = SYSCTL_CHILDREN(tree);
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SYSCTL_ADD_UINT(ctx, tree_par, OID_AUTO, "conn_type", CTLFLAG_RD,
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@ -2343,10 +2376,6 @@ ntb_sysctl_init(struct ntb_softc *ntb)
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__DEVOLATILE(uint32_t *, &ntb->lnk_sta), 0,
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"LNK STA register (cached)");
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SYSCTL_ADD_PROC(ctx, tree_par, OID_AUTO, "link_status",
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CTLFLAG_RD | CTLTYPE_STRING, ntb, 0, sysctl_handle_link_status,
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"A", "Link status");
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SYSCTL_ADD_U8(ctx, tree_par, OID_AUTO, "mw_count", CTLFLAG_RD,
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&ntb->mw_count, 0, "MW count");
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SYSCTL_ADD_U8(ctx, tree_par, OID_AUTO, "spad_count", CTLFLAG_RD,
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@ -2592,7 +2621,37 @@ sysctl_handle_features(SYSCTL_HANDLER_ARGS)
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}
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static int
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sysctl_handle_link_status(SYSCTL_HANDLER_ARGS)
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sysctl_handle_link_admin(SYSCTL_HANDLER_ARGS)
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{
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struct ntb_softc *ntb;
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unsigned old, new;
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int error;
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error = 0;
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ntb = arg1;
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old = ntb_link_enabled(ntb);
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error = SYSCTL_OUT(req, &old, sizeof(old));
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if (error != 0 || req->newptr == NULL)
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return (error);
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error = SYSCTL_IN(req, &new, sizeof(new));
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if (error != 0)
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return (error);
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ntb_printf(0, "Admin set interface state to '%sabled'\n",
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(new != 0)? "en" : "dis");
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if (new != 0)
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error = ntb_link_enable(ntb, NTB_SPEED_AUTO, NTB_WIDTH_AUTO);
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else
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error = ntb_link_disable(ntb);
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return (error);
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}
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static int
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sysctl_handle_link_status_human(SYSCTL_HANDLER_ARGS)
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{
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struct ntb_softc *ntb;
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struct sbuf sb;
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@ -2619,6 +2678,24 @@ sysctl_handle_link_status(SYSCTL_HANDLER_ARGS)
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return (EINVAL);
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}
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static int
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sysctl_handle_link_status(SYSCTL_HANDLER_ARGS)
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{
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struct ntb_softc *ntb;
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unsigned res;
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int error;
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error = 0;
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ntb = arg1;
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res = ntb_link_is_up(ntb, NULL, NULL);
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error = SYSCTL_OUT(req, &res, sizeof(res));
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if (error || !req->newptr)
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return (error);
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return (EINVAL);
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}
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static int
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sysctl_handle_register(SYSCTL_HANDLER_ARGS)
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{
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@ -70,6 +70,7 @@ bool ntb_link_is_up(struct ntb_softc *, enum ntb_speed *, enum ntb_width *);
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void ntb_link_event(struct ntb_softc *);
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int ntb_link_enable(struct ntb_softc *, enum ntb_speed, enum ntb_width);
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int ntb_link_disable(struct ntb_softc *);
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bool ntb_link_enabled(struct ntb_softc *);
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int ntb_set_ctx(struct ntb_softc *, void *, const struct ntb_ctx_ops *);
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void *ntb_get_ctx(struct ntb_softc *, const struct ntb_ctx_ops **);
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