PCI: switchtec: Add support for PCIe Gen5 devices

Advertise support of Gen5 devices in the driver's device ID table and
add the same IDs for the switchtec quirks. Also update driver code to
accommodate them.

Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Kelvin Cao <[e-mail]>
Signed-off-by: Bjorn Helgaas <[e-mail]>
Reviewed-by: Logan Gunthorpe <[e-mail]>

drivers/pci/quirks.c

···
 SWITCHTEC_QUIRK(0x4552);  /* PAXA 52XG4 */
 SWITCHTEC_QUIRK(0x4536);  /* PAXA 36XG4 */
 SWITCHTEC_QUIRK(0x4528);  /* PAXA 28XG4 */
+SWITCHTEC_QUIRK(0x5000);  /* PFX 100XG5 */
+SWITCHTEC_QUIRK(0x5084);  /* PFX 84XG5 */
+SWITCHTEC_QUIRK(0x5068);  /* PFX 68XG5 */
+SWITCHTEC_QUIRK(0x5052);  /* PFX 52XG5 */
+SWITCHTEC_QUIRK(0x5036);  /* PFX 36XG5 */
+SWITCHTEC_QUIRK(0x5028);  /* PFX 28XG5 */
+SWITCHTEC_QUIRK(0x5100);  /* PSX 100XG5 */
+SWITCHTEC_QUIRK(0x5184);  /* PSX 84XG5 */
+SWITCHTEC_QUIRK(0x5168);  /* PSX 68XG5 */
+SWITCHTEC_QUIRK(0x5152);  /* PSX 52XG5 */
+SWITCHTEC_QUIRK(0x5136);  /* PSX 36XG5 */
+SWITCHTEC_QUIRK(0x5128);  /* PSX 28XG5 */
+SWITCHTEC_QUIRK(0x5200);  /* PAX 100XG5 */
+SWITCHTEC_QUIRK(0x5284);  /* PAX 84XG5 */
+SWITCHTEC_QUIRK(0x5268);  /* PAX 68XG5 */
+SWITCHTEC_QUIRK(0x5252);  /* PAX 52XG5 */
+SWITCHTEC_QUIRK(0x5236);  /* PAX 36XG5 */
+SWITCHTEC_QUIRK(0x5228);  /* PAX 28XG5 */
+SWITCHTEC_QUIRK(0x5300);  /* PFXA 100XG5 */
+SWITCHTEC_QUIRK(0x5384);  /* PFXA 84XG5 */
+SWITCHTEC_QUIRK(0x5368);  /* PFXA 68XG5 */
+SWITCHTEC_QUIRK(0x5352);  /* PFXA 52XG5 */
+SWITCHTEC_QUIRK(0x5336);  /* PFXA 36XG5 */
+SWITCHTEC_QUIRK(0x5328);  /* PFXA 28XG5 */
+SWITCHTEC_QUIRK(0x5400);  /* PSXA 100XG5 */
+SWITCHTEC_QUIRK(0x5484);  /* PSXA 84XG5 */
+SWITCHTEC_QUIRK(0x5468);  /* PSXA 68XG5 */
+SWITCHTEC_QUIRK(0x5452);  /* PSXA 52XG5 */
+SWITCHTEC_QUIRK(0x5436);  /* PSXA 36XG5 */
+SWITCHTEC_QUIRK(0x5428);  /* PSXA 28XG5 */
+SWITCHTEC_QUIRK(0x5500);  /* PAXA 100XG5 */
+SWITCHTEC_QUIRK(0x5584);  /* PAXA 84XG5 */
+SWITCHTEC_QUIRK(0x5568);  /* PAXA 68XG5 */
+SWITCHTEC_QUIRK(0x5552);  /* PAXA 52XG5 */
+SWITCHTEC_QUIRK(0x5536);  /* PAXA 36XG5 */
+SWITCHTEC_QUIRK(0x5528);  /* PAXA 28XG5 */
 
 /*
  * The PLX NTB uses devfn proxy IDs to move TLPs between NT endpoints.

drivers/pci/switch/switchtec.c

···
 	if (stdev->gen == SWITCHTEC_GEN3) \
 		return io_string_show(buf, &si->gen3.field, \
 				      sizeof(si->gen3.field)); \
-	else if (stdev->gen == SWITCHTEC_GEN4) \
+	else if (stdev->gen >= SWITCHTEC_GEN4) \
 		return io_string_show(buf, &si->gen4.field, \
 				      sizeof(si->gen4.field)); \
 	else \
···
 	if (stdev->gen == SWITCHTEC_GEN3) {
 		info.flash_length = ioread32(&fi->gen3.flash_length);
 		info.num_partitions = SWITCHTEC_NUM_PARTITIONS_GEN3;
-	} else if (stdev->gen == SWITCHTEC_GEN4) {
+	} else if (stdev->gen >= SWITCHTEC_GEN4) {
 		info.flash_length = ioread32(&fi->gen4.flash_length);
 		info.num_partitions = SWITCHTEC_NUM_PARTITIONS_GEN4;
 	} else {
···
 		ret = flash_part_info_gen3(stdev, &info);
 		if (ret)
 			return ret;
-	} else if (stdev->gen == SWITCHTEC_GEN4) {
+	} else if (stdev->gen >= SWITCHTEC_GEN4) {
 		ret = flash_part_info_gen4(stdev, &info);
 		if (ret)
 			return ret;
···
 
 	if (stdev->gen == SWITCHTEC_GEN3)
 		part_id = &stdev->mmio_sys_info->gen3.partition_id;
-	else if (stdev->gen == SWITCHTEC_GEN4)
+	else if (stdev->gen >= SWITCHTEC_GEN4)
 		part_id = &stdev->mmio_sys_info->gen4.partition_id;
 	else
 		return -EOPNOTSUPP;
···
 	SWITCHTEC_PCI_DEVICE(0x4552, SWITCHTEC_GEN4),  /* PAXA 52XG4 */
 	SWITCHTEC_PCI_DEVICE(0x4536, SWITCHTEC_GEN4),  /* PAXA 36XG4 */
 	SWITCHTEC_PCI_DEVICE(0x4528, SWITCHTEC_GEN4),  /* PAXA 28XG4 */
+	SWITCHTEC_PCI_DEVICE(0x5000, SWITCHTEC_GEN5),  /* PFX 100XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5084, SWITCHTEC_GEN5),  /* PFX 84XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5068, SWITCHTEC_GEN5),  /* PFX 68XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5052, SWITCHTEC_GEN5),  /* PFX 52XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5036, SWITCHTEC_GEN5),  /* PFX 36XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5028, SWITCHTEC_GEN5),  /* PFX 28XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5100, SWITCHTEC_GEN5),  /* PSX 100XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5184, SWITCHTEC_GEN5),  /* PSX 84XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5168, SWITCHTEC_GEN5),  /* PSX 68XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5152, SWITCHTEC_GEN5),  /* PSX 52XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5136, SWITCHTEC_GEN5),  /* PSX 36XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5128, SWITCHTEC_GEN5),  /* PSX 28XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5200, SWITCHTEC_GEN5),  /* PAX 100XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5284, SWITCHTEC_GEN5),  /* PAX 84XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5268, SWITCHTEC_GEN5),  /* PAX 68XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5252, SWITCHTEC_GEN5),  /* PAX 52XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5236, SWITCHTEC_GEN5),  /* PAX 36XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5228, SWITCHTEC_GEN5),  /* PAX 28XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5300, SWITCHTEC_GEN5),  /* PFXA 100XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5384, SWITCHTEC_GEN5),  /* PFXA 84XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5368, SWITCHTEC_GEN5),  /* PFXA 68XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5352, SWITCHTEC_GEN5),  /* PFXA 52XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5336, SWITCHTEC_GEN5),  /* PFXA 36XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5328, SWITCHTEC_GEN5),  /* PFXA 28XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5400, SWITCHTEC_GEN5),  /* PSXA 100XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5484, SWITCHTEC_GEN5),  /* PSXA 84XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5468, SWITCHTEC_GEN5),  /* PSXA 68XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5452, SWITCHTEC_GEN5),  /* PSXA 52XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5436, SWITCHTEC_GEN5),  /* PSXA 36XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5428, SWITCHTEC_GEN5),  /* PSXA 28XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5500, SWITCHTEC_GEN5),  /* PAXA 100XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5584, SWITCHTEC_GEN5),  /* PAXA 84XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5568, SWITCHTEC_GEN5),  /* PAXA 68XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5552, SWITCHTEC_GEN5),  /* PAXA 52XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5536, SWITCHTEC_GEN5),  /* PAXA 36XG5 */
+	SWITCHTEC_PCI_DEVICE(0x5528, SWITCHTEC_GEN5),  /* PAXA 28XG5 */
 	{0}
 };
 MODULE_DEVICE_TABLE(pci, switchtec_pci_tbl);

include/linux/switchtec.h

···
 enum switchtec_gen {
 	SWITCHTEC_GEN3,
 	SWITCHTEC_GEN4,
+	SWITCHTEC_GEN5,
 };
 
 struct mrpc_regs {