1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
52 #include <dev/pci/pcireg.h>
53 #include <dev/pci/pcivar.h>
54 #include <dev/pci/pcib_private.h>
55 #include <dev/pci/pci_private.h>
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()
179  * This is used for both the PCI and ACPI attachments.  It shouldn't return
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()
242 	 * that there aren't unique PCI ID's to help with this.  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()
256 	 * Find the PCI Vendor Specific Extended Capability.  It's the magic  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()
279 		tb_debug(sc, DBG_BRIDGE, "SXEXIT returned error= %d resp= 0x%x "  in tb_pcib_attach_common()
280 		    "data= 0x%x\n", error, cmd.cmd_resp, cmd.data_out);  in tb_pcib_attach_common()
286 		val = pci_read_config(dev, sc->vsec + AR_VSCAP_1C, 4);  in tb_pcib_attach_common()
287 		tb_debug(sc, DBG_BRIDGE|DBG_FULL, "VSEC+0x1c= 0x%08x\n", val);  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()
292 		tb_debug(sc, DBG_BRIDGE|DBG_FULL, "VSEC+0xb0= 0x%08x\n", val);  in tb_pcib_attach_common()
294 		pci_write_config(dev, sc->vsec + AR_VSCAP_B0, val, 4);  in tb_pcib_attach_common()
330 		tb_debug(sc, DBG_BRIDGE, "SXEXIT returned error= %d resp= 0x%x "  in tb_pcib_detach()
331 		    "data= 0x%x\n", error, cmd.cmd_resp, cmd.data_out);  in tb_pcib_detach()
348 	if (vsec == -1)  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()
363 	tb_debug(sc, DBG_BRIDGE|DBG_FULL, "Writing LC cmd 0x%x\n", regcmd);  in tb_pcib_lc_mailbox()
369 		tb_debug(sc, DBG_BRIDGE|DBG_FULL, "LC Mailbox= 0x%08x\n",  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()
463  * differentiated by PCI ID, so a heuristic approach to identifying it is
529 	*debug = sc->debug;  in tb_pcib_get_debug()
550 DRIVER_MODULE_ORDERED(tb_pcib, pci, tb_pcib_driver,
552 MODULE_DEPEND(tb_pcib, pci, 1, 1, 1);
554     pci, tb_pcib, tb_pcib_identifiers, nitems(tb_pcib_identifiers) - 1);
564 	 * This driver is only valid if the parent device is a PCI-PCI  in tb_pci_probe()
566 	 * PCI bus.  in tb_pci_probe()
570 	if (strcmp(devclass_get_name(dc), "pci") != 0)  in tb_pci_probe()
574 		switch (n->flags & TB_GEN_MASK) {  in tb_pci_probe()
622 DEFINE_CLASS_1(pci, tb_pci_driver, tb_pci_methods, sizeof(struct pci_softc),
625 MODULE_DEPEND(tb_pci, pci, 1, 1, 1);