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[Qemu-devel] [PATCH 8/8] sun4u: move in-built devices behind PCI bridge
From: |
Mark Cave-Ayland |
Subject: |
[Qemu-devel] [PATCH 8/8] sun4u: move in-built devices behind PCI bridge A |
Date: |
Tue, 11 Jul 2017 22:53:27 +0100 |
This switches the sun4u model to being much closer to a real Ultra 5.
Since the existing code previously bypassed the PCI bridge interrupt
swizzling, reorganise the interrupt mapping functions so that
pci_pbm_map_irq() is used by the PCI bridges and pci_apb_map_irq() is
used by the PCI host bridge.
As part of this change we also combine the "onboard" NIC and the ebus into
a single multi-function device as done on a real Ultra 5.
Finally we mark the physically unavailable slots (plus slot 0 in busA) as
reserved to ensure that users can't plug devices into non-existent slots
which will break interrupt routing.
Signed-off-by: Mark Cave-Ayland <address@hidden>
---
hw/pci-host/apb.c | 35 +++++++++++++++++++++++++++--------
hw/sparc64/sun4u.c | 25 ++++++++++++++++++++-----
2 files changed, 47 insertions(+), 13 deletions(-)
diff --git a/hw/pci-host/apb.c b/hw/pci-host/apb.c
index f9badad..5000432 100644
--- a/hw/pci-host/apb.c
+++ b/hw/pci-host/apb.c
@@ -601,16 +601,35 @@ static uint64_t apb_pci_config_read(void *opaque, hwaddr
addr,
/* The APB host has an IRQ line for each IRQ line of each slot. */
static int pci_apb_map_irq(PCIDevice *pci_dev, int irq_num)
{
- return ((pci_dev->devfn & 0x18) >> 1) + irq_num;
+ /* Return the irq as swizzled by the PBM */
+ return irq_num;
}
static int pci_pbm_map_irq(PCIDevice *pci_dev, int irq_num)
{
+ PBMPCIBridge *br = PBM_PCI_BRIDGE(pci_bridge_get_device(
+ PCI_BUS(qdev_get_parent_bus(DEVICE(pci_dev)))));
+
int bus_offset;
- if (pci_dev->devfn & 1)
- bus_offset = 16;
- else
- bus_offset = 0;
+ if (br->busA) {
+ bus_offset = 0x0;
+
+ /* The on-board devices have fixed (legacy) OBIO intnos */
+ switch (PCI_SLOT(pci_dev->devfn)) {
+ case 1:
+ /* Onboard NIC */
+ return 0x21;
+ case 3:
+ /* Onboard IDE */
+ return 0x20;
+
+ default:
+ /* Normal intno, fall through */
+ break;
+ }
+ } else {
+ bus_offset = 0x10;
+ }
return (bus_offset + (PCI_SLOT(pci_dev->devfn) << 2) + irq_num) & 0x1f;
}
@@ -692,7 +711,7 @@ PCIBus *pci_apb_init(hwaddr special_base,
d = APB_DEVICE(dev);
phb = PCI_HOST_BRIDGE(dev);
phb->bus = pci_register_bus(DEVICE(phb), "pci",
- pci_apb_set_irq, pci_pbm_map_irq, d,
+ pci_apb_set_irq, pci_apb_map_irq, d,
&d->pci_mmio,
get_system_io(),
0, 32, TYPE_PCI_BUS);
@@ -726,14 +745,14 @@ PCIBus *pci_apb_init(hwaddr special_base,
pci_dev = pci_create_multifunction(phb->bus, PCI_DEVFN(1, 0), true,
TYPE_PBM_PCI_BRIDGE);
br = PCI_BRIDGE(pci_dev);
- pci_bridge_map_irq(br, "pciB", pci_apb_map_irq);
+ pci_bridge_map_irq(br, "pciB", pci_pbm_map_irq);
qdev_init_nofail(&pci_dev->qdev);
*busB = pci_bridge_get_sec_bus(br);
pci_dev = pci_create_multifunction(phb->bus, PCI_DEVFN(1, 1), true,
TYPE_PBM_PCI_BRIDGE);
br = PCI_BRIDGE(pci_dev);
- pci_bridge_map_irq(br, "pciA", pci_apb_map_irq);
+ pci_bridge_map_irq(br, "pciA", pci_pbm_map_irq);
qdev_prop_set_bit(DEVICE(pci_dev), "busA", true);
qdev_init_nofail(&pci_dev->qdev);
*busA = pci_bridge_get_sec_bus(br);
diff --git a/hw/sparc64/sun4u.c b/hw/sparc64/sun4u.c
index 3bb3bf2..b8b96be 100644
--- a/hw/sparc64/sun4u.c
+++ b/hw/sparc64/sun4u.c
@@ -27,6 +27,7 @@
#include "cpu.h"
#include "hw/hw.h"
#include "hw/pci/pci.h"
+#include "hw/pci/pci_bus.h"
#include "hw/pci-host/apb.h"
#include "hw/i386/pc.h"
#include "hw/char/serial.h"
@@ -42,6 +43,7 @@
#include "hw/nvram/fw_cfg.h"
#include "hw/sysbus.h"
#include "hw/ide.h"
+#include "hw/ide/pci.h"
#include "hw/loader.h"
#include "elf.h"
#include "qemu/cutils.h"
@@ -448,10 +450,17 @@ static void sun4uv_init(MemoryRegion *address_space_mem,
ivec_irqs = qemu_allocate_irqs(sparc64_cpu_set_ivec_irq, cpu, IVEC_MAX);
pci_bus = pci_apb_init(APB_SPECIAL_BASE, APB_MEM_BASE, ivec_irqs,
&pci_busA,
&pci_busB, &pbm_irqs);
- pci_vga_init(pci_bus);
- /* XXX Should be pci_busA */
- ebus = pci_create_simple(pci_bus, -1, "ebus");
+ /* Only in-built Simba PBMs can exist on the root bus, slot 0 on busA is
+ reserved (leaving no slots free after on-board devices) leaving slots
+ 0-3 are free on busB 4*/
+ pci_bus->slot_reserved_mask = 0xfffffffc;
+ pci_busA->slot_reserved_mask = 0xfffffff1;
+ pci_busB->slot_reserved_mask = 0xfffffff0;
+
+ ebus = pci_create_multifunction(pci_busA, PCI_DEVFN(1, 0), true, "ebus");
+ qdev_init_nofail(DEVICE(ebus));
+
isa_bus = pci_ebus_init(ebus, pbm_irqs);
i = 0;
@@ -464,14 +473,20 @@ static void sun4uv_init(MemoryRegion *address_space_mem,
serial_hds_isa_init(isa_bus, i, MAX_SERIAL_PORTS);
parallel_hds_isa_init(isa_bus, MAX_PARALLEL_PORTS);
- pci_dev = pci_create(pci_bus, -1, "ne2k_pci");
+ pci_dev = pci_create_simple(pci_busA, PCI_DEVFN(2, 0), "VGA");
+
+ pci_dev = pci_create_multifunction(pci_busA, PCI_DEVFN(1, 1), true,
+ "ne2k_pci");
dev = &pci_dev->qdev;
qdev_set_nic_properties(dev, &nd_table[0]);
qdev_init_nofail(dev);
ide_drive_get(hd, ARRAY_SIZE(hd));
- pci_cmd646_ide_init(pci_bus, hd, 1);
+ pci_dev = pci_create(pci_busA, PCI_DEVFN(3, 0), "cmd646-ide");
+ qdev_prop_set_uint32(&pci_dev->qdev, "secondary", 1);
+ qdev_init_nofail(&pci_dev->qdev);
+ pci_ide_create_devs(pci_dev, hd);
isa_create_simple(isa_bus, "i8042");
--
1.7.10.4
- [Qemu-devel] [PATCH 0/8] sun4u: change PCI topology to better match a real Ultra 5, Mark Cave-Ayland, 2017/07/11
- [Qemu-devel] [PATCH 2/8] sun4u: switch to using qdev to instantiate fw_cfg interface, Mark Cave-Ayland, 2017/07/11
- [Qemu-devel] [PATCH 4/8] apb: fix up PCI bus nomenclature, Mark Cave-Ayland, 2017/07/11
- [Qemu-devel] [PATCH 3/8] sun4u: expose fw_cfg and NVRAM on ebus PCI IO address space, Mark Cave-Ayland, 2017/07/11
- [Qemu-devel] [PATCH 7/8] sun4u: create single default onboard ne2k_pci NIC for machine, Mark Cave-Ayland, 2017/07/11
- [Qemu-devel] [PATCH 6/8] apb: add busA qdev property to PBM PCI bridge, Mark Cave-Ayland, 2017/07/11
- [Qemu-devel] [PATCH 8/8] sun4u: move in-built devices behind PCI bridge A,
Mark Cave-Ayland <=
- [Qemu-devel] [PATCH 1/8] sun4u: pass PCIDevice into pci_ebus_init() instead of PCIBus, Mark Cave-Ayland, 2017/07/11
- [Qemu-devel] [PATCH 5/8] apb: fix endianness for APB and PCI config accesses, Mark Cave-Ayland, 2017/07/11
- Re: [Qemu-devel] [PATCH 0/8] sun4u: change PCI topology to better match a real Ultra 5, no-reply, 2017/07/11