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authorFelix Fietkau <nbd@openwrt.org>2014-11-27 15:02:05 +0000
committerFelix Fietkau <nbd@openwrt.org>2014-11-27 15:02:05 +0000
commitd57b64dfb0ba45e5da17cf145c54bd8ad85caf52 (patch)
tree10cd63fc306c3726dd7773b778c43ab591f071c8 /target
parent40e8649947bab2527c9ae9e9c6b5af8a3dfbee92 (diff)
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cns3xxx: fix pcie root bridge topology
Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 43403
Diffstat (limited to 'target')
-rw-r--r--target/linux/cns3xxx/patches-3.14/110-pci_isolated_interrupts.patch4
-rw-r--r--target/linux/cns3xxx/patches-3.14/120-backport_pcie_topology_fix.patch53
2 files changed, 55 insertions, 2 deletions
diff --git a/target/linux/cns3xxx/patches-3.14/110-pci_isolated_interrupts.patch b/target/linux/cns3xxx/patches-3.14/110-pci_isolated_interrupts.patch
index 3e4cc67..4aeb210 100644
--- a/target/linux/cns3xxx/patches-3.14/110-pci_isolated_interrupts.patch
+++ b/target/linux/cns3xxx/patches-3.14/110-pci_isolated_interrupts.patch
@@ -30,7 +30,7 @@
#include <linux/gpio.h>
#include <linux/dma-mapping.h>
#include <linux/serial_core.h>
-@@ -868,12 +869,42 @@ static int laguna_register_gpio(struct g
+@@ -873,12 +874,42 @@ static int laguna_register_gpio(struct g
return ret;
}
@@ -74,7 +74,7 @@
}
subsys_initcall(laguna_pcie_init);
-@@ -888,8 +919,33 @@ static int __init laguna_model_setup(voi
+@@ -893,8 +924,33 @@ static int __init laguna_model_setup(voi
printk("Running on Gateworks Laguna %s\n", laguna_info.model);
cns3xxx_gpio_init( 0, 32, CNS3XXX_GPIOA_BASE_VIRT, IRQ_CNS3XXX_GPIOA,
NR_IRQS_CNS3XXX);
diff --git a/target/linux/cns3xxx/patches-3.14/120-backport_pcie_topology_fix.patch b/target/linux/cns3xxx/patches-3.14/120-backport_pcie_topology_fix.patch
new file mode 100644
index 0000000..4f68e6f
--- /dev/null
+++ b/target/linux/cns3xxx/patches-3.14/120-backport_pcie_topology_fix.patch
@@ -0,0 +1,53 @@
+--- a/arch/arm/mach-cns3xxx/pcie.c
++++ b/arch/arm/mach-cns3xxx/pcie.c
+@@ -71,7 +71,7 @@ static void __iomem *cns3xxx_pci_cfg_bas
+ void __iomem *base;
+
+ /* If there is no link, just show the CNS PCI bridge. */
+- if (!cnspci->linked && (busno > 0 || slot > 0))
++ if (!cnspci->linked && (busno > 0))
+ return NULL;
+
+ /*
+@@ -80,15 +80,19 @@ static void __iomem *cns3xxx_pci_cfg_bas
+ * the first device on the same bus as the CNS PCI bridge.
+ */
+ if (busno == 0) {
+- if (slot > 1)
++ type = CNS3XXX_HOST_TYPE;
++ if (devfn)
++ return NULL;
++ } else if (busno == 1) {
++ type = CNS3XXX_CFG0_TYPE;
++ if (slot)
+ return NULL;
+- type = slot;
+ } else {
+ type = CNS3XXX_CFG1_TYPE;
+ }
+
+ base = (void __iomem *)cnspci->cfg_bases[type].virtual;
+- offset = ((busno & 0xf) << 20) | (devfn << 12) | (where & 0xffc);
++ offset = (devfn << 12) | (where & 0xffc);
+
+ return base + offset;
+ }
+@@ -256,7 +260,7 @@ static struct pci_ops cns3xxx_pcie_ops =
+ static int cns3xxx_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+ {
+ struct cns3xxx_pcie *cnspci = pdev_to_cnspci(dev);
+- int irq = cnspci->irqs[slot+pin-1];
++ int irq = cnspci->irqs[!!dev->bus->number+pin-1];
+
+ pr_info("PCIe map irq: %04d:%02x:%02x.%02x slot %d, pin %d, irq: %d\n",
+ pci_domain_nr(dev->bus), dev->bus->number, PCI_SLOT(dev->devfn),
+@@ -434,7 +438,8 @@ static void __init cns3xxx_pcie_hw_init(
+ return;
+
+ /* Set Device Max_Read_Request_Size to 128 byte */
+- devfn = PCI_DEVFN(1, 0);
++ bus.number = 1;
++ devfn = PCI_DEVFN(0, 0);
+ pos = pci_bus_find_capability(&bus, devfn, PCI_CAP_ID_EXP);
+ pci_bus_read_config_word(&bus, devfn, pos + PCI_EXP_DEVCTL, &dc);
+ dc &= ~(0x3 << 12); /* Clear Device Control Register [14:12] */