1 // SPDX-License-Identifier: GPL-2.0
4  * Some of it includes work-arounds for PCI hardware and BIOS quirks.
5  * It may need to run early during booting -- before USB would normally
6  * initialize -- to ensure that Linux doesn't use any legacy modes.
22 #include "pci-quirks.h"
23 #include "xhci-ext-caps.h"
127 	enum amd_chipset_gen gen;  member
144  * amd_chipset_sb_type_init - initialize amd chipset southbridge type
154 	pinfo->sb_type.gen = AMD_CHIPSET_UNKNOWN;  in amd_chipset_sb_type_init()
156 	pinfo->smbus_dev = pci_get_device(PCI_VENDOR_ID_ATI,  in amd_chipset_sb_type_init()
158 	if (pinfo->smbus_dev) {  in amd_chipset_sb_type_init()
159 		rev = pinfo->smbus_dev->revision;  in amd_chipset_sb_type_init()
161 			pinfo->sb_type.gen = AMD_CHIPSET_SB600;  in amd_chipset_sb_type_init()
163 			pinfo->sb_type.gen = AMD_CHIPSET_SB700;  in amd_chipset_sb_type_init()
165 			pinfo->sb_type.gen = AMD_CHIPSET_SB800;  in amd_chipset_sb_type_init()
167 		pinfo->smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,  in amd_chipset_sb_type_init()
170 		if (pinfo->smbus_dev) {  in amd_chipset_sb_type_init()
171 			rev = pinfo->smbus_dev->revision;  in amd_chipset_sb_type_init()
173 				pinfo->sb_type.gen = AMD_CHIPSET_HUDSON2;  in amd_chipset_sb_type_init()
175 				pinfo->sb_type.gen = AMD_CHIPSET_BOLTON;  in amd_chipset_sb_type_init()
177 				pinfo->sb_type.gen = AMD_CHIPSET_YANGTZE;  in amd_chipset_sb_type_init()
179 			pinfo->smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,  in amd_chipset_sb_type_init()
181 			if (pinfo->smbus_dev) {  in amd_chipset_sb_type_init()
182 				rev = pinfo->smbus_dev->revision;  in amd_chipset_sb_type_init()
183 				pinfo->sb_type.gen = AMD_CHIPSET_TAISHAN;  in amd_chipset_sb_type_init()
185 				pinfo->sb_type.gen = NOT_AMD_CHIPSET;  in amd_chipset_sb_type_init()
190 	pinfo->sb_type.rev = rev;  in amd_chipset_sb_type_init()
228 	switch (info.sb_type.gen) {  in usb_amd_find_chipset_info()
271 		/* race - someone else was faster - drop devices */  in usb_amd_find_chipset_info()
282 		/* no race - commit the result */  in usb_amd_find_chipset_info()
293 	if (amd_chipset.sb_type.gen == AMD_CHIPSET_YANGTZE ||  in usb_hcd_amd_remote_wakeup_quirk()
294 	    amd_chipset.sb_type.gen == AMD_CHIPSET_TAISHAN) {  in usb_hcd_amd_remote_wakeup_quirk()
295 		dev_dbg(&pdev->dev, "QUIRK: Enable AMD remote wakeup fix\n");  in usb_hcd_amd_remote_wakeup_quirk()
309 	return amd_chipset.sb_type.gen == AMD_CHIPSET_SB600 ||  in usb_amd_hang_symptom_quirk()
310 			(amd_chipset.sb_type.gen == AMD_CHIPSET_SB700 &&  in usb_amd_hang_symptom_quirk()
318 	/* SB800 needs pre-fetch fix */  in usb_amd_prefetch_quirk()
319 	return amd_chipset.sb_type.gen == AMD_CHIPSET_SB800;  in usb_amd_prefetch_quirk()
331  * The hardware normally enables the A-link power management feature, which
355 		amd_chipset.isoc_reqs--;  in usb_amd_quirk_pll()
362 	if (amd_chipset.sb_type.gen == AMD_CHIPSET_SB800 ||  in usb_amd_quirk_pll()
363 			amd_chipset.sb_type.gen == AMD_CHIPSET_HUDSON2 ||  in usb_amd_quirk_pll()
364 			amd_chipset.sb_type.gen == AMD_CHIPSET_BOLTON) {  in usb_amd_quirk_pll()
375 	} else if (amd_chipset.sb_type.gen == AMD_CHIPSET_SB700 &&  in usb_amd_quirk_pll()
468 	for (retry_count = 1000; retry_count > 0; --retry_count) {  in usb_asmedia_wait_write()
473 			dev_err(&pdev->dev, "%s: check_ready ERROR", __func__);  in usb_asmedia_wait_write()
474 			return -EIO;  in usb_asmedia_wait_write()
483 	dev_warn(&pdev->dev, "%s: check_write_ready timeout", __func__);  in usb_asmedia_wait_write()
484 	return -ETIMEDOUT;  in usb_asmedia_wait_write()
520 	amd_chipset.probe_count--;  in usb_amd_dev_put()
582 	switch (pdev->device) {  in usb_amd_pt_check_port()
592 			port_shift = port - 7;  in usb_amd_pt_check_port()
606 			port_shift = port - 3;  in usb_amd_pt_check_port()
620 			port_shift = port - 4;  in usb_amd_pt_check_port()
647 	/* Reset the HC - this will force us to get a  in uhci_reset_hc()
656 		dev_warn(&pdev->dev, "HCRESET not completed yet!\n");  in uhci_reset_hc()
689 		dev_dbg(&pdev->dev, "%s: legsup = 0x%04x\n",  in uhci_check_and_reset_hc()
697 		dev_dbg(&pdev->dev, "%s: cmd = 0x%04x\n",  in uhci_check_and_reset_hc()
704 		dev_dbg(&pdev->dev, "%s: intr = 0x%04x\n",  in uhci_check_and_reset_hc()
711 	dev_dbg(&pdev->dev, "Performing full reset\n");  in uhci_check_and_reset_hc()
768 	if (pdev->vendor == PCI_VENDOR_ID_AL && pdev->device == 0x5237)  in quirk_usb_handoff_ohci()
773 /* On PA-RISC, PDC can leave IR set incorrectly; ignore it there. */  in quirk_usb_handoff_ohci()
785 			wait_time -= 10;  in quirk_usb_handoff_ohci()
789 			dev_warn(&pdev->dev,  in quirk_usb_handoff_ohci()
809 	for (cnt = 30; cnt > 0; --cnt) {	/* ... allow extra time */  in quirk_usb_handoff_ohci()
827 			DMI_MATCH(DMI_BIOS_VERSION, "Lucid-CE-133"),
834 			DMI_MATCH(DMI_BIOS_VERSION, "Lucid-"),
841 			DMI_MATCH(DMI_BIOS_VERSION, "Lucid-"),
867 	if (pdev->vendor == 0x8086 && (pdev->device == 0x283a ||  in ehci_bios_handoff()
868 			pdev->device == 0x27cc)) {  in ehci_bios_handoff()
874 		dev_dbg(&pdev->dev, "EHCI: BIOS handoff\n");  in ehci_bios_handoff()
882 		/* BIOS workaround (?): be sure the pre-Linux code  in ehci_bios_handoff()
903 			msec -= 10;  in ehci_bios_handoff()
913 			dev_warn(&pdev->dev,  in ehci_bios_handoff()
952 	while (offset && --count) {  in quirk_usb_disable_ehci()
963 			dev_warn(&pdev->dev,  in quirk_usb_disable_ehci()
970 		dev_printk(KERN_DEBUG, &pdev->dev, "EHCI: capability loop?\n");  in quirk_usb_disable_ehci()
985 			wait_time -= 100;  in quirk_usb_disable_ehci()
999  * handshake - spin reading a register until handshake completes
1008  * Returns -ETIMEDOUT if this condition is not true after
1033  * We write into the xHC's PCI configuration space in some Intel-specific
1045 	/* Sony VAIO t-series with subsystem device ID 90a8 is not capable of  in usb_enable_intel_xhci_ports()
1048 	if (xhci_pdev->subsystem_vendor == PCI_VENDOR_ID_SONY &&  in usb_enable_intel_xhci_ports()
1049 	    xhci_pdev->subsystem_device == 0x90a8)  in usb_enable_intel_xhci_ports()
1054 		if (companion->class == PCI_CLASS_SERIAL_USB_EHCI &&  in usb_enable_intel_xhci_ports()
1055 		    companion->vendor == PCI_VENDOR_ID_INTEL) {  in usb_enable_intel_xhci_ports()
1069 		dev_warn(&xhci_pdev->dev,  in usb_enable_intel_xhci_ports()
1071 		dev_warn(&xhci_pdev->dev,  in usb_enable_intel_xhci_ports()
1083 	dev_dbg(&xhci_pdev->dev, "Configurable ports to enable SuperSpeed: 0x%x\n",  in usb_enable_intel_xhci_ports()
1095 	dev_dbg(&xhci_pdev->dev,  in usb_enable_intel_xhci_ports()
1106 	dev_dbg(&xhci_pdev->dev, "Configurable USB 2.0 ports to hand over to xCHI: 0x%x\n",  in usb_enable_intel_xhci_ports()
1118 	dev_dbg(&xhci_pdev->dev,  in usb_enable_intel_xhci_ports()
1134  * Takes care of the handoff between the Pre-OS (i.e. BIOS) and the OS.
1156 	 * Find the Legacy Support Capability register -  in quirk_usb_handoff_xhci()
1166 		dev_warn(&pdev->dev, "xHCI controller failing to respond");  in quirk_usb_handoff_xhci()
1172 	if ((pdev->vendor == PCI_VENDOR_ID_TI && pdev->device == 0x8241) ||  in quirk_usb_handoff_xhci()
1173 			(pdev->vendor == PCI_VENDOR_ID_RENESAS  in quirk_usb_handoff_xhci()
1174 			 && pdev->device == 0x0014)) {  in quirk_usb_handoff_xhci()
1189 			dev_warn(&pdev->dev,  in quirk_usb_handoff_xhci()
1205 	if (pdev->vendor == PCI_VENDOR_ID_INTEL)  in quirk_usb_handoff_xhci()
1218 		dev_warn(&pdev->dev,  in quirk_usb_handoff_xhci()
1228 	/* Wait for the HC to halt - poll every 125 usec (one microframe). */  in quirk_usb_handoff_xhci()
1233 		dev_warn(&pdev->dev,  in quirk_usb_handoff_xhci()
1250 	if (pdev->vendor == 0x184e)	/* vendor Netlogic */  in quirk_usb_early_handoff()
1255 	 * taken care of by the board's co-processor.  in quirk_usb_early_handoff()
1257 	if (pdev->vendor == PCI_VENDOR_ID_VIA && pdev->device == 0x3483) {  in quirk_usb_early_handoff()
1258 		parent = of_get_parent(pdev->bus->dev.of_node);  in quirk_usb_early_handoff()
1259 		is_rpi = of_device_is_compatible(parent, "brcm,bcm2711-pcie");  in quirk_usb_early_handoff()
1265 	if (pdev->class != PCI_CLASS_SERIAL_USB_UHCI &&  in quirk_usb_early_handoff()
1266 			pdev->class != PCI_CLASS_SERIAL_USB_OHCI &&  in quirk_usb_early_handoff()
1267 			pdev->class != PCI_CLASS_SERIAL_USB_EHCI &&  in quirk_usb_early_handoff()
1268 			pdev->class != PCI_CLASS_SERIAL_USB_XHCI)  in quirk_usb_early_handoff()
1272 		dev_warn(&pdev->dev,  in quirk_usb_early_handoff()
1276 	if (pdev->class == PCI_CLASS_SERIAL_USB_UHCI)  in quirk_usb_early_handoff()
1278 	else if (pdev->class == PCI_CLASS_SERIAL_USB_OHCI)  in quirk_usb_early_handoff()
1280 	else if (pdev->class == PCI_CLASS_SERIAL_USB_EHCI)  in quirk_usb_early_handoff()
1282 	else if (pdev->class == PCI_CLASS_SERIAL_USB_XHCI)  in quirk_usb_early_handoff()