From 50a24291948a25a919147cea45eaa92bd8e401b8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Fri, 2 Aug 2024 18:49:55 +0200 Subject: [PATCH] hw/pci-host/gt64120: Set PCI base address register write mask MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When booting Linux we see: PCI host bridge to bus 0000:00 pci_bus 0000:00: root bus resource [mem 0x10000000-0x17ffffff] pci_bus 0000:00: root bus resource [io 0x1000-0x1fffff] pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff] pci 0000:00:00.0: [11ab:4620] type 00 class 0x060000 pci 0000:00:00.0: [Firmware Bug]: reg 0x14: invalid BAR (can't size) pci 0000:00:00.0: [Firmware Bug]: reg 0x18: invalid BAR (can't size) pci 0000:00:00.0: [Firmware Bug]: reg 0x1c: invalid BAR (can't size) pci 0000:00:00.0: [Firmware Bug]: reg 0x20: invalid BAR (can't size) pci 0000:00:00.0: [Firmware Bug]: reg 0x24: invalid BAR (can't size) This is due to missing base address register write mask. Add it to get: PCI host bridge to bus 0000:00 pci_bus 0000:00: root bus resource [mem 0x10000000-0x17ffffff] pci_bus 0000:00: root bus resource [io 0x1000-0x1fffff] pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff] pci 0000:00:00.0: [11ab:4620] type 00 class 0x060000 pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x00000fff pref] pci 0000:00:00.0: reg 0x14: [mem 0x01000000-0x01000fff pref] pci 0000:00:00.0: reg 0x18: [mem 0x1c000000-0x1c000fff] pci 0000:00:00.0: reg 0x1c: [mem 0x1f000000-0x1f000fff] pci 0000:00:00.0: reg 0x20: [mem 0x1be00000-0x1be00fff] pci 0000:00:00.0: reg 0x24: [io 0x14000000-0x14000fff] Since this device is only used by MIPS machines which aren't versioned, we don't need to update migration compat machinery. Mention the datasheet referenced. Remove the "Malta assumptions ahead" comment since the reset values from the datasheet are used. Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: BALATON Zoltan Message-Id: <20240802213122.86852-2-philmd@linaro.org> --- hw/pci-host/gt64120.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/hw/pci-host/gt64120.c b/hw/pci-host/gt64120.c index e02efc9e2e..573d2619ee 100644 --- a/hw/pci-host/gt64120.c +++ b/hw/pci-host/gt64120.c @@ -1,6 +1,8 @@ /* * QEMU GT64120 PCI host * + * (Datasheet GT-64120 Rev 1.4 from Sep 14, 1999) + * * Copyright (c) 2006,2007 Aurelien Jarno * * Permission is hereby granted, free of charge, to any person obtaining a copy @@ -1213,17 +1215,27 @@ static void gt64120_realize(DeviceState *dev, Error **errp) static void gt64120_pci_realize(PCIDevice *d, Error **errp) { - /* FIXME: Malta specific hw assumptions ahead */ + /* Values from chapter 17.16 "PCI Configuration" */ + pci_set_word(d->config + PCI_COMMAND, 0); pci_set_word(d->config + PCI_STATUS, PCI_STATUS_FAST_BACK | PCI_STATUS_DEVSEL_MEDIUM); pci_config_set_prog_interface(d->config, 0); + + pci_set_long(d->wmask + PCI_BASE_ADDRESS_0, 0xfffff008); /* SCS[1:0] */ + pci_set_long(d->wmask + PCI_BASE_ADDRESS_1, 0xfffff008); /* SCS[3:2] */ + pci_set_long(d->wmask + PCI_BASE_ADDRESS_2, 0xfffff008); /* CS[2:0] */ + pci_set_long(d->wmask + PCI_BASE_ADDRESS_3, 0xfffff008); /* CS[3], BootCS */ + pci_set_long(d->wmask + PCI_BASE_ADDRESS_4, 0xfffff000); /* ISD MMIO */ + pci_set_long(d->wmask + PCI_BASE_ADDRESS_5, 0xfffff001); /* ISD I/O */ + pci_set_long(d->config + PCI_BASE_ADDRESS_0, 0x00000008); pci_set_long(d->config + PCI_BASE_ADDRESS_1, 0x01000008); pci_set_long(d->config + PCI_BASE_ADDRESS_2, 0x1c000000); pci_set_long(d->config + PCI_BASE_ADDRESS_3, 0x1f000000); pci_set_long(d->config + PCI_BASE_ADDRESS_4, 0x14000000); pci_set_long(d->config + PCI_BASE_ADDRESS_5, 0x14000001); + pci_set_byte(d->config + 0x3d, 0x01); }