diff options
| author |   Thomas Bogendoerfer <tbogendoerfer@suse.de> | 2020-01-09 11:34:27 +0100 |
|---|---|---|
| committer |   Paul Burton <paulburton@kernel.org> | 2020-01-09 15:30:53 -0800 |
| commit | 2634e5a651e74efc415b2eff37116fcb8206b614 (patch) | |
| tree | 06cbd91ef614fa223c593f90b6e3f0bb0af66579 | |
| parent | MIPS: SGI-IP27: No need for slice_map (diff) | |
| download | linux-dev-2634e5a651e74efc415b2eff37116fcb8206b614.tar.xz linux-dev-2634e5a651e74efc415b2eff37116fcb8206b614.zip | |
MIPS: PCI: Support mapping of INTB/C/D for pci-xtalk-bridge
Implented mapping of PCI INTB/C/D, which is needed for PCI multifunction
devices, PCI-PCI bridges and IOC3.
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
| -rw-r--r-- | arch/mips/include/asm/pci/bridge.h | 3 | ||||
| -rw-r--r-- | arch/mips/pci/pci-xtalk-bridge.c | 28 |
2 files changed, 26 insertions, 5 deletions
diff --git a/arch/mips/include/asm/pci/bridge.h b/arch/mips/include/asm/pci/bridge.h index 3bc630ff9ad4..9c476a0400e0 100644 --- a/arch/mips/include/asm/pci/bridge.h +++ b/arch/mips/include/asm/pci/bridge.h @@ -806,7 +806,8 @@ struct bridge_controller { unsigned long baddr; unsigned long intr_addr; struct irq_domain *domain; - unsigned int pci_int[8]; + unsigned int pci_int[8][2]; + unsigned int int_mapping[8][2]; u32 ioc3_sid[8]; nasid_t nasid; }; diff --git a/arch/mips/pci/pci-xtalk-bridge.c b/arch/mips/pci/pci-xtalk-bridge.c index 5c1a196be0c5..ef5ca7c13ca5 100644 --- a/arch/mips/pci/pci-xtalk-bridge.c +++ b/arch/mips/pci/pci-xtalk-bridge.c @@ -437,17 +437,28 @@ static int bridge_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) struct irq_alloc_info info; int irq; - irq = bc->pci_int[slot]; + switch (pin) { + case PCI_INTERRUPT_UNKNOWN: + case PCI_INTERRUPT_INTA: + case PCI_INTERRUPT_INTC: + pin = 0; + break; + case PCI_INTERRUPT_INTB: + case PCI_INTERRUPT_INTD: + pin = 1; + } + + irq = bc->pci_int[slot][pin]; if (irq == -1) { info.ctrl = bc; info.nasid = bc->nasid; - info.pin = slot; + info.pin = bc->int_mapping[slot][pin]; irq = irq_domain_alloc_irqs(bc->domain, 1, bc->nasid, &info); if (irq < 0) return irq; - bc->pci_int[slot] = irq; + bc->pci_int[slot][pin] = irq; } return irq; } @@ -458,21 +469,26 @@ static void bridge_setup_ip27_baseio6g(struct bridge_controller *bc) { bc->ioc3_sid[2] = IOC3_SID(IOC3_SUBSYS_IP27_BASEIO6G); bc->ioc3_sid[6] = IOC3_SID(IOC3_SUBSYS_IP27_MIO); + bc->int_mapping[2][1] = 4; + bc->int_mapping[6][1] = 6; } static void bridge_setup_ip27_baseio(struct bridge_controller *bc) { bc->ioc3_sid[2] = IOC3_SID(IOC3_SUBSYS_IP27_BASEIO); + bc->int_mapping[2][1] = 4; } static void bridge_setup_ip29_baseio(struct bridge_controller *bc) { bc->ioc3_sid[2] = IOC3_SID(IOC3_SUBSYS_IP29_SYSBOARD); + bc->int_mapping[2][1] = 3; } static void bridge_setup_ip30_sysboard(struct bridge_controller *bc) { bc->ioc3_sid[2] = IOC3_SID(IOC3_SUBSYS_IP30_SYSBOARD); + bc->int_mapping[2][1] = 4; } static void bridge_setup_menet(struct bridge_controller *bc) @@ -655,7 +671,11 @@ static int bridge_probe(struct platform_device *pdev) for (slot = 0; slot < 8; slot++) { bridge_set(bc, b_device[slot].reg, BRIDGE_DEV_SWAP_DIR); - bc->pci_int[slot] = -1; + bc->pci_int[slot][0] = -1; + bc->pci_int[slot][1] = -1; + /* default interrupt pin mapping */ + bc->int_mapping[slot][0] = slot; + bc->int_mapping[slot][1] = slot ^ 4; } bridge_read(bc, b_wid_tflush); /* wait until Bridge PIO complete */ |