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[Qemu-devel] [PATCHv3 11/16] apb: split pci_pbm_map_irq() into separate
From: |
Mark Cave-Ayland |
Subject: |
[Qemu-devel] [PATCHv3 11/16] apb: split pci_pbm_map_irq() into separate functions for bus A and bus B |
Date: |
Thu, 21 Dec 2017 08:20:40 +0000 |
After the previous refactoring it is now possible to use separate functions
to improve the clarity of the interrupt paths.
Signed-off-by: Mark Cave-Ayland <address@hidden>
---
hw/pci-host/apb.c | 45 ++++++++++++++++++++-------------------------
1 file changed, 20 insertions(+), 25 deletions(-)
diff --git a/hw/pci-host/apb.c b/hw/pci-host/apb.c
index 6c20285b04..3ebb9dc304 100644
--- a/hw/pci-host/apb.c
+++ b/hw/pci-host/apb.c
@@ -517,32 +517,27 @@ static int pci_apb_map_irq(PCIDevice *pci_dev, int
irq_num)
return irq_num;
}
-static int pci_pbm_map_irq(PCIDevice *pci_dev, int irq_num)
+static int pci_pbmA_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 (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;
+ }
- /* 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;
+ return ((PCI_SLOT(pci_dev->devfn) << 2) + irq_num) & 0x1f;
+}
- default:
- /* Normal intno, fall through */
- break;
- }
- } else {
- bus_offset = 0x10;
- }
- return (bus_offset + (PCI_SLOT(pci_dev->devfn) << 2) + irq_num) & 0x1f;
+static int pci_pbmB_map_irq(PCIDevice *pci_dev, int irq_num)
+{
+ return (0x10 + (PCI_SLOT(pci_dev->devfn) << 2) + irq_num) & 0x1f;
}
static void pci_apb_set_irq(void *opaque, int irq_num, int level)
@@ -673,13 +668,13 @@ static void pci_pbm_realize(DeviceState *dev, Error
**errp)
pci_dev = pci_create_multifunction(phb->bus, PCI_DEVFN(1, 0), true,
TYPE_PBM_PCI_BRIDGE);
s->bridgeB = PCI_BRIDGE(pci_dev);
- pci_bridge_map_irq(s->bridgeB, "pciB", pci_pbm_map_irq);
+ pci_bridge_map_irq(s->bridgeB, "pciB", pci_pbmB_map_irq);
qdev_init_nofail(&pci_dev->qdev);
pci_dev = pci_create_multifunction(phb->bus, PCI_DEVFN(1, 1), true,
TYPE_PBM_PCI_BRIDGE);
s->bridgeA = PCI_BRIDGE(pci_dev);
- pci_bridge_map_irq(s->bridgeA, "pciA", pci_pbm_map_irq);
+ pci_bridge_map_irq(s->bridgeA, "pciA", pci_pbmA_map_irq);
qdev_prop_set_bit(DEVICE(pci_dev), "busA", true);
qdev_init_nofail(&pci_dev->qdev);
}
--
2.11.0
- [Qemu-devel] [PATCHv3 01/16] apb: move QOM macros and typedefs from apb.c to apb.h, (continued)
- [Qemu-devel] [PATCHv3 01/16] apb: move QOM macros and typedefs from apb.c to apb.h, Mark Cave-Ayland, 2017/12/21
- [Qemu-devel] [PATCHv3 09/16] apb: move the two secondary PCI bridges objects into APBState, Mark Cave-Ayland, 2017/12/21
- [Qemu-devel] [PATCHv3 08/16] apb: use gpios to wire up the apb device to the SPARC CPU IRQs, Mark Cave-Ayland, 2017/12/21
- [Qemu-devel] [PATCHv3 10/16] apb: remove pci_apb_init() and instantiate APB device using qdev, Mark Cave-Ayland, 2017/12/21
- [Qemu-devel] [PATCHv3 16/16] sun4u: switch from EBUS_DPRINTF() macro to trace-events, Mark Cave-Ayland, 2017/12/21
- [Qemu-devel] [PATCHv3 15/16] sparc64: introduce trace-events for hw/sparc64, Mark Cave-Ayland, 2017/12/21
- [Qemu-devel] [PATCHv3 14/16] apb: replace OBIO interrupt numbers in pci_pbmA_map_irq() with constants, Mark Cave-Ayland, 2017/12/21
- [Qemu-devel] [PATCHv3 13/16] ebus: wire up OBIO interrupts to APB pbm via qdev GPIOs, Mark Cave-Ayland, 2017/12/21
- [Qemu-devel] [PATCHv3 11/16] apb: split pci_pbm_map_irq() into separate functions for bus A and bus B,
Mark Cave-Ayland <=
- [Qemu-devel] [PATCHv3 12/16] apb: remove busA property from PBMPCIBridge state, Mark Cave-Ayland, 2017/12/21