PCI: switchtec: Add Microchip PCI100X device IDs
[ Upstream commit a3282f84b2151d254dc4abf24d1255c6382be774 ] Add Microchip parts to the Device ID table so the driver supports PCI100x devices. Add a new macro to quirk the Microchip Switchtec PCI100x parts to allow DMA access via NTB to work when the IOMMU is turned on. PCI100x family has 6 variants; each variant is designed for different application usages, different port counts and lane counts: PCI1001 has 1 x4 upstream port and 3 x4 downstream ports PCI1002 has 1 x4 upstream port and 4 x2 downstream ports PCI1003 has 2 x4 upstream ports, 2 x2 upstream ports, and 2 x2 downstream ports PCI1004 has 4 x4 upstream ports PCI1005 has 1 x4 upstream port and 6 x2 downstream ports PCI1006 has 6 x2 upstream ports and 2 x2 downstream ports [Historical note: these parts use PCI_VENDOR_ID_EFAR (0x1055), from EFAR Microsystems, which was acquired in 1996 by Standard Microsystems Corp, which was acquired by Microchip Technology in 2012. The PCI-SIG confirms that Vendor ID 0x1055 is assigned to Microchip even though it's not visible via https://pcisig.com/membership/member-companies] Link: https://lore.kernel.org/r/20250120095524.243103-1-Saladi.Rakeshbabu@microchip.com Signed-off-by: Rakesh Babu Saladi <Saladi.Rakeshbabu@microchip.com> [bhelgaas: Vendor ID history] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-By: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -5870,6 +5870,17 @@ SWITCHTEC_QUIRK(0x5552); /* PAXA 52XG5 */
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SWITCHTEC_QUIRK(0x5536); /* PAXA 36XG5 */
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SWITCHTEC_QUIRK(0x5528); /* PAXA 28XG5 */
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#define SWITCHTEC_PCI100X_QUIRK(vid) \
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DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_EFAR, vid, \
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PCI_CLASS_BRIDGE_OTHER, 8, quirk_switchtec_ntb_dma_alias)
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SWITCHTEC_PCI100X_QUIRK(0x1001); /* PCI1001XG4 */
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SWITCHTEC_PCI100X_QUIRK(0x1002); /* PCI1002XG4 */
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SWITCHTEC_PCI100X_QUIRK(0x1003); /* PCI1003XG4 */
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SWITCHTEC_PCI100X_QUIRK(0x1004); /* PCI1004XG4 */
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SWITCHTEC_PCI100X_QUIRK(0x1005); /* PCI1005XG4 */
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SWITCHTEC_PCI100X_QUIRK(0x1006); /* PCI1006XG4 */
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/*
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* The PLX NTB uses devfn proxy IDs to move TLPs between NT endpoints.
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* These IDs are used to forward responses to the originator on the other
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@ -1739,6 +1739,26 @@ static void switchtec_pci_remove(struct pci_dev *pdev)
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.driver_data = gen, \
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}
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#define SWITCHTEC_PCI100X_DEVICE(device_id, gen) \
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{ \
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.vendor = PCI_VENDOR_ID_EFAR, \
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.device = device_id, \
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.subvendor = PCI_ANY_ID, \
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.subdevice = PCI_ANY_ID, \
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.class = (PCI_CLASS_MEMORY_OTHER << 8), \
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.class_mask = 0xFFFFFFFF, \
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.driver_data = gen, \
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}, \
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{ \
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.vendor = PCI_VENDOR_ID_EFAR, \
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.device = device_id, \
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.subvendor = PCI_ANY_ID, \
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.subdevice = PCI_ANY_ID, \
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.class = (PCI_CLASS_BRIDGE_OTHER << 8), \
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.class_mask = 0xFFFFFFFF, \
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.driver_data = gen, \
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}
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static const struct pci_device_id switchtec_pci_tbl[] = {
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SWITCHTEC_PCI_DEVICE(0x8531, SWITCHTEC_GEN3), /* PFX 24xG3 */
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SWITCHTEC_PCI_DEVICE(0x8532, SWITCHTEC_GEN3), /* PFX 32xG3 */
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@ -1833,6 +1853,12 @@ static const struct pci_device_id switchtec_pci_tbl[] = {
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SWITCHTEC_PCI_DEVICE(0x5552, SWITCHTEC_GEN5), /* PAXA 52XG5 */
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SWITCHTEC_PCI_DEVICE(0x5536, SWITCHTEC_GEN5), /* PAXA 36XG5 */
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SWITCHTEC_PCI_DEVICE(0x5528, SWITCHTEC_GEN5), /* PAXA 28XG5 */
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SWITCHTEC_PCI100X_DEVICE(0x1001, SWITCHTEC_GEN4), /* PCI1001 16XG4 */
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SWITCHTEC_PCI100X_DEVICE(0x1002, SWITCHTEC_GEN4), /* PCI1002 12XG4 */
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SWITCHTEC_PCI100X_DEVICE(0x1003, SWITCHTEC_GEN4), /* PCI1003 16XG4 */
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SWITCHTEC_PCI100X_DEVICE(0x1004, SWITCHTEC_GEN4), /* PCI1004 16XG4 */
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SWITCHTEC_PCI100X_DEVICE(0x1005, SWITCHTEC_GEN4), /* PCI1005 16XG4 */
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SWITCHTEC_PCI100X_DEVICE(0x1006, SWITCHTEC_GEN4), /* PCI1006 16XG4 */
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{0}
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};
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MODULE_DEVICE_TABLE(pci, switchtec_pci_tbl);
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