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authorJayachandran C <jchandra@broadcom.com>2012-11-15 10:45:55 +0100
committerJohn Crispin <blogic@openwrt.org>2012-11-20 08:33:50 +0100
commitea49b750d4d2038c8227dfb8bbf9a2ba3fd4c4c5 (patch)
treebff9cd3954cbff927b92928de3309acbf77f6f56 /arch/mips
parentMIPS: BCM63XX: fix BCM6345 clocks bits (diff)
downloadlinux-ea49b750d4d2038c8227dfb8bbf9a2ba3fd4c4c5.tar.xz
linux-ea49b750d4d2038c8227dfb8bbf9a2ba3fd4c4c5.zip
MIPS: PCI: Update XLR/XLS PCI for the new PIC code
Use the nlm_set_pic_extra_ack() call to setup the extra interrupt ACK needed by XLR PCI and XLS PCIe. Simplify the code by adding nlm_pci_link_to_irq(). Signed-off-by: Jayachandran C <jchandra@broadcom.com> Patchwork: http://patchwork.linux-mips.org/patch/4561 Signed-off-by: John Crispin <blogic@openwrt.org>
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/pci/pci-xlr.c69
1 files changed, 34 insertions, 35 deletions
diff --git a/arch/mips/pci/pci-xlr.c b/arch/mips/pci/pci-xlr.c
index 18af021d289a..0c18ccc79623 100644
--- a/arch/mips/pci/pci-xlr.c
+++ b/arch/mips/pci/pci-xlr.c
@@ -47,6 +47,7 @@
#include <asm/netlogic/interrupt.h>
#include <asm/netlogic/haldefs.h>
+#include <asm/netlogic/common.h>
#include <asm/netlogic/xlr/msidef.h>
#include <asm/netlogic/xlr/iomap.h>
@@ -174,22 +175,9 @@ static struct pci_dev *xls_get_pcie_link(const struct pci_dev *dev)
return p ? bus->self : NULL;
}
-static int get_irq_vector(const struct pci_dev *dev)
+static int nlm_pci_link_to_irq(int link)
{
- struct pci_dev *lnk;
-
- if (!nlm_chip_is_xls())
- return PIC_PCIX_IRQ; /* for XLR just one IRQ */
-
- /*
- * For XLS PCIe, there is an IRQ per Link, find out which
- * link the device is on to assign interrupts
- */
- lnk = xls_get_pcie_link(dev);
- if (lnk == NULL)
- return 0;
-
- switch (PCI_SLOT(lnk->devfn)) {
+ switch (link) {
case 0:
return PIC_PCIE_LINK0_IRQ;
case 1:
@@ -205,10 +193,26 @@ static int get_irq_vector(const struct pci_dev *dev)
else
return PIC_PCIE_LINK3_IRQ;
}
- WARN(1, "Unexpected devfn %d\n", lnk->devfn);
+ WARN(1, "Unexpected link %d\n", link);
return 0;
}
+static int get_irq_vector(const struct pci_dev *dev)
+{
+ struct pci_dev *lnk;
+ int link;
+
+ if (!nlm_chip_is_xls())
+ return PIC_PCIX_IRQ; /* for XLR just one IRQ */
+
+ lnk = xls_get_pcie_link(dev);
+ if (lnk == NULL)
+ return 0;
+
+ link = PCI_SLOT(lnk->devfn);
+ return nlm_pci_link_to_irq(link);
+}
+
#ifdef CONFIG_PCI_MSI
void destroy_irq(unsigned int irq)
{
@@ -332,6 +336,9 @@ int pcibios_plat_dev_init(struct pci_dev *dev)
static int __init pcibios_init(void)
{
+ void (*extra_ack)(struct irq_data *);
+ int link, irq;
+
/* PSB assigns PCI resources */
pci_set_flags(PCI_PROBE_ONLY);
pci_config_base = ioremap(DEFAULT_PCI_CONFIG_BASE, 16 << 20);
@@ -350,27 +357,19 @@ static int __init pcibios_init(void)
* For PCI interrupts, we need to ack the PCI controller too, overload
* irq handler data to do this
*/
- if (nlm_chip_is_xls()) {
- if (nlm_chip_is_xls_b()) {
- irq_set_handler_data(PIC_PCIE_LINK0_IRQ,
- xls_pcie_ack_b);
- irq_set_handler_data(PIC_PCIE_LINK1_IRQ,
- xls_pcie_ack_b);
- irq_set_handler_data(PIC_PCIE_XLSB0_LINK2_IRQ,
- xls_pcie_ack_b);
- irq_set_handler_data(PIC_PCIE_XLSB0_LINK3_IRQ,
- xls_pcie_ack_b);
- } else {
- irq_set_handler_data(PIC_PCIE_LINK0_IRQ, xls_pcie_ack);
- irq_set_handler_data(PIC_PCIE_LINK1_IRQ, xls_pcie_ack);
- irq_set_handler_data(PIC_PCIE_LINK2_IRQ, xls_pcie_ack);
- irq_set_handler_data(PIC_PCIE_LINK3_IRQ, xls_pcie_ack);
- }
- } else {
+ if (!nlm_chip_is_xls()) {
/* XLR PCI controller ACK */
- irq_set_handler_data(PIC_PCIX_IRQ, xlr_pci_ack);
+ nlm_set_pic_extra_ack(0, PIC_PCIX_IRQ, xlr_pci_ack);
+ } else {
+ if (nlm_chip_is_xls_b())
+ extra_ack = xls_pcie_ack_b;
+ else
+ extra_ack = xls_pcie_ack;
+ for (link = 0; link < 4; link++) {
+ irq = nlm_pci_link_to_irq(link);
+ nlm_set_pic_extra_ack(0, irq, extra_ack);
+ }
}
-
return 0;
}