device/pci: Replace use of dev_find_slot() for IRQs

Change-Id: I48c0de73338430282ce1a4442bbeb7c867dc174c
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34079
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

5 files changed, 17 insertions, 23 deletions

diff --git a/src/arch/x86/pirq_routing.c b/src/arch/x86/pirq_routing.c
index 5f80c9d56c..9d1f5910e9 100644
--- a/src/arch/x86/pirq_routing.c
+++ b/src/arch/x86/pirq_routing.c
@@ -177,7 +177,7 @@ static void pirq_route_irqs(unsigned long addr)
 		}
 
 		/* Bus, device, slots IRQs for {A,B,C,D}. */
-		pci_assign_irqs(bus, devfn >> 3, irq_slot);
+		pci_assign_irqs(pcidev_path_on_bus(bus, devfn), irq_slot);
 	}
 
 	for (i = 0; i < CONFIG_MAX_PIRQ_LINKS; i++)
diff --git a/src/device/pci_device.c b/src/device/pci_device.c
index a2af0ec999..2c724aad50 100644
--- a/src/device/pci_device.c
+++ b/src/device/pci_device.c
@@ -1499,27 +1499,24 @@ int get_pci_irq_pins(struct device *dev, struct device **parent_bdg)
  *
  * This function should be called for each PCI slot in your system.
  *
- * @param bus Pointer to the bus structure.
- * @param slot TODO
+ * @param dev Pointer to dev structure.
  * @param pIntAtoD An array of IRQ #s that are assigned to PINTA through PINTD
  *        of this slot. The particular IRQ #s that are passed in depend on the
  *        routing inside your southbridge and on your board.
  */
-void pci_assign_irqs(unsigned bus, unsigned slot,
-		     const unsigned char pIntAtoD[4])
+void pci_assign_irqs(struct device *dev, const unsigned char pIntAtoD[4])
 {
-	unsigned int funct;
-	struct device *pdev;
-	u8 line, irq;
+	u8 slot, line, irq;
 
-	/* Each slot may contain up to eight functions. */
-	for (funct = 0; funct < 8; funct++) {
-		pdev = dev_find_slot(bus, (slot << 3) + funct);
+	/* Each device may contain up to eight functions. */
+	slot = dev->path.pci.devfn >> 3;
 
-		if (!pdev)
-			continue;
+	for (; dev ; dev = dev->sibling) {
+
+		if (dev->path.pci.devfn >> 3 != slot)
+			break;
 
-		line = pci_read_config8(pdev, PCI_INTERRUPT_PIN);
+		line = pci_read_config8(dev, PCI_INTERRUPT_PIN);
 
 		/* PCI spec says all values except 1..4 are reserved. */
 		if ((line < 1) || (line > 4))
@@ -1527,11 +1524,9 @@ void pci_assign_irqs(unsigned bus, unsigned slot,
 
 		irq = pIntAtoD[line - 1];
 
-		printk(BIOS_DEBUG, "Assigning IRQ %d to %d:%x.%d\n",
-		       irq, bus, slot, funct);
+		printk(BIOS_DEBUG, "Assigning IRQ %d to %s\n", irq, dev_path(dev));
 
-		pci_write_config8(pdev, PCI_INTERRUPT_LINE,
-				  pIntAtoD[line - 1]);
+		pci_write_config8(dev, PCI_INTERRUPT_LINE, pIntAtoD[line - 1]);
 
 #ifdef PARANOID_IRQ_ASSIGNMENTS
 		irq = pci_read_config8(pdev, PCI_INTERRUPT_LINE);
diff --git a/src/include/device/pci.h b/src/include/device/pci.h
index 5f72b55cff..c08b30af6f 100644
--- a/src/include/device/pci.h
+++ b/src/include/device/pci.h
@@ -98,8 +98,7 @@ unsigned int pci_match_simple_dev(struct device *dev, pci_devfn_t sdev);
 
 const char *pin_to_str(int pin);
 int get_pci_irq_pins(struct device *dev, struct device **parent_bdg);
-void pci_assign_irqs(unsigned int bus, unsigned int slot,
-		     const unsigned char pIntAtoD[4]);
+void pci_assign_irqs(struct device *dev, const unsigned char pIntAtoD[4]);
 const char *get_pci_class_name(struct device *dev);
 const char *get_pci_subclass_name(struct device *dev);
 
diff --git a/src/mainboard/emulation/qemu-i440fx/mainboard.c b/src/mainboard/emulation/qemu-i440fx/mainboard.c
index 4886fe1830..0b3689731e 100644
--- a/src/mainboard/emulation/qemu-i440fx/mainboard.c
+++ b/src/mainboard/emulation/qemu-i440fx/mainboard.c
@@ -41,7 +41,7 @@ static void qemu_nb_init(struct device *dev)
 
 	/* setup IRQ routing */
 	for (i = 0; i < 32; i++)
-		pci_assign_irqs(0, i, qemu_i440fx_irqs + (i % 4));
+		pci_assign_irqs(pcidev_on_root(i, 0), qemu_i440fx_irqs + (i % 4));
 }
 
 static struct device_operations nb_operations = {
diff --git a/src/mainboard/emulation/qemu-q35/mainboard.c b/src/mainboard/emulation/qemu-q35/mainboard.c
index 90a32f4000..ae3f96a158 100644
--- a/src/mainboard/emulation/qemu-q35/mainboard.c
+++ b/src/mainboard/emulation/qemu-q35/mainboard.c
@@ -61,10 +61,10 @@ static void qemu_nb_init(struct device *dev)
 
 	/* setup IRQ routing for pci slots */
 	for (i = 0; i < 25; i++)
-		pci_assign_irqs(0, i, qemu_q35_irqs + (i % 4));
+		pci_assign_irqs(pcidev_on_root(i, 0), qemu_q35_irqs + (i % 4));
 	/* setup IRQ routing southbridge devices */
 	for (i = 25; i < 32; i++)
-		pci_assign_irqs(0, i, qemu_q35_irqs);
+		pci_assign_irqs(pcidev_on_root(i, 0), qemu_q35_irqs);
 }
 
 static void qemu_nb_read_resources(struct device *dev)