1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
94 	    "Thunderbolt 3 PCI-PCI Bridge (Alpine Ridge 2C)" },
96 	    "Thunderbolt 3 PCI-PCI Bridge (Alpine Ridge LP)" },
98 	    "Thunderbolt 3 PCI-PCI Bridge (Alpine Ridge C 4C)" },
100 	    "Thunderbolt 3 PCI-PCI Bridge C (Alpine Ridge C 2C)" },
102 	    "Thunderbolt 3 PCI-PCI Bridge (IceLake)" },
104 	    "Thunderbolt 3 PCI-PCI Bridge (IceLake)" },
119 	for (n = tb_pcib_identifiers; n->vendor != 0; n++) {  in tb_pcib_find_ident()
120 		if ((n->vendor != v) || (n->device != d))  in tb_pcib_find_ident()
122 		if (((n->subvendor != 0xffff) && (n->subvendor != sv)) ||  in tb_pcib_find_ident()
123 		    ((n->subdevice != 0xffff) && (n->subdevice != sd)))  in tb_pcib_find_ident()
137 	sc->debug = 0;  in tb_pcib_get_tunables()
142 		tb_parse_debug(&sc->debug, oid);  in tb_pcib_get_tunables()
147 	    device_get_unit(sc->dev));  in tb_pcib_get_tunables()
149 		tb_parse_debug(&sc->debug, oid);  in tb_pcib_get_tunables()
160 	ctx = device_get_sysctl_ctx(sc->dev);  in tb_pcib_setup_sysctl()
162 		tree = device_get_sysctl_tree(sc->dev);  in tb_pcib_setup_sysctl()
168 	sc->sysctl_tree = tree;  in tb_pcib_setup_sysctl()
169 	sc->sysctl_ctx = ctx;  in tb_pcib_setup_sysctl()
173 	    &sc->debug, 0, tb_debug_sysctl, "A", "Thunderbolt debug level");  in tb_pcib_setup_sysctl()
195 		snprintf(desc, TB_DESC_MAX, "%s %s", n->desc, suffix);  in tb_pcib_probe_common()
223 	sc->dev = dev;  in tb_pcib_attach_common()
224 	sc->vsec = -1;  in tb_pcib_attach_common()
228 	sc->flags = n->flags;  in tb_pcib_attach_common()
240 	 * Determine if this is an upstream or downstream facing device, and  in tb_pcib_attach_common()
247 			sc->flags |= TB_FLAGS_ISUFP;  in tb_pcib_attach_common()
250 				sc->flags |= TB_FLAGS_ISROOT;  in tb_pcib_attach_common()
260 		error = pci_find_extcap(dev, PCIZ_VENDOR, &sc->vsec);  in tb_pcib_attach_common()
269 	 * Take the AR bridge out of low-power mode.  in tb_pcib_attach_common()
283 	/* The downstream facing port on AR needs some help */  in tb_pcib_attach_common()
286 		val = pci_read_config(dev, sc->vsec + AR_VSCAP_1C, 4);  in tb_pcib_attach_common()
289 		pci_write_config(dev, sc->vsec + AR_VSCAP_1C, val, 4);  in tb_pcib_attach_common()
291 		val = pci_read_config(dev, sc->vsec + AR_VSCAP_B0, 4);  in tb_pcib_attach_common()
294 		pci_write_config(dev, sc->vsec + AR_VSCAP_B0, val, 4);  in tb_pcib_attach_common()
348 	if (vsec == -1)  in tb_pcib_lc_mailbox()
360 	/* Set the valid bit to signal we're sending a command */  in tb_pcib_lc_mailbox()
361 	regcmd = LC_MBOXOUT_VALID | (cmd->cmd & LC_MBOXOUT_CMD_MASK);  in tb_pcib_lc_mailbox()
362 	regcmd |= (cmd->data_in << LC_MBOXOUT_DATA_SHIFT);  in tb_pcib_lc_mailbox()
378 	cmd->cmd_resp = result & LC_MBOXIN_CMD_MASK;  in tb_pcib_lc_mailbox()
379 	cmd->data_out = result >> LC_MBOXIN_CMD_SHIFT;  in tb_pcib_lc_mailbox()
419 	if (vsec == -1)  in tb_pcib_pcie2cio_read()
445 	if (vsec == -1)  in tb_pcib_pcie2cio_write()
461  * The Upstream Facing Port (UFP) in a switch is special, it's the function
463  * differentiated by PCI ID, so a heuristic approach to identifying it is
529 	*debug = sc->debug;  in tb_pcib_get_debug()
554     pci, tb_pcib, tb_pcib_identifiers, nitems(tb_pcib_identifiers) - 1);
562 		switch (n->flags & TB_GEN_MASK) {  in tb_pci_probe()