MIPS: Netlogic: Move code common with XLP to common/
- Move code that can be shared with XLP (irq.c, smp.c, time.c and
xlr_console.c) to arch/mips/netlogic/common
- Add asm/netlogic/haldefs.h and asm/netlogic/common.h for common and
io functions shared with XLP
- remove type 'nlm_reg_t *' and use uint64_t for mmio offsets
- Move XLR specific code in smp.c to xlr/wakeup.c
- Move XLR specific PCI code from irq.c to mips/pci/pci-xlr.c
- Provide API for pic functions called from common/irq.c
Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2964/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/pci/pci-xlr.c b/arch/mips/pci/pci-xlr.c
index 87404d0..3d701a9 100644
--- a/arch/mips/pci/pci-xlr.c
+++ b/arch/mips/pci/pci-xlr.c
@@ -45,6 +45,8 @@
#include <asm/io.h>
#include <asm/netlogic/interrupt.h>
+#include <asm/netlogic/haldefs.h>
+
#include <asm/netlogic/xlr/msidef.h>
#include <asm/netlogic/xlr/iomap.h>
#include <asm/netlogic/xlr/pic.h>
@@ -226,6 +228,56 @@
}
#endif
+/* Extra ACK needed for XLR on chip PCI controller */
+static void xlr_pci_ack(struct irq_data *d)
+{
+ uint64_t pcibase = nlm_mmio_base(NETLOGIC_IO_PCIX_OFFSET);
+
+ nlm_read_reg(pcibase, (0x140 >> 2));
+}
+
+/* Extra ACK needed for XLS on chip PCIe controller */
+static void xls_pcie_ack(struct irq_data *d)
+{
+ uint64_t pciebase_le = nlm_mmio_base(NETLOGIC_IO_PCIE_1_OFFSET);
+
+ switch (d->irq) {
+ case PIC_PCIE_LINK0_IRQ:
+ nlm_write_reg(pciebase_le, (0x90 >> 2), 0xffffffff);
+ break;
+ case PIC_PCIE_LINK1_IRQ:
+ nlm_write_reg(pciebase_le, (0x94 >> 2), 0xffffffff);
+ break;
+ case PIC_PCIE_LINK2_IRQ:
+ nlm_write_reg(pciebase_le, (0x190 >> 2), 0xffffffff);
+ break;
+ case PIC_PCIE_LINK3_IRQ:
+ nlm_write_reg(pciebase_le, (0x194 >> 2), 0xffffffff);
+ break;
+ }
+}
+
+/* For XLS B silicon, the 3,4 PCI interrupts are different */
+static void xls_pcie_ack_b(struct irq_data *d)
+{
+ uint64_t pciebase_le = nlm_mmio_base(NETLOGIC_IO_PCIE_1_OFFSET);
+
+ switch (d->irq) {
+ case PIC_PCIE_LINK0_IRQ:
+ nlm_write_reg(pciebase_le, (0x90 >> 2), 0xffffffff);
+ break;
+ case PIC_PCIE_LINK1_IRQ:
+ nlm_write_reg(pciebase_le, (0x94 >> 2), 0xffffffff);
+ break;
+ case PIC_PCIE_XLSB0_LINK2_IRQ:
+ nlm_write_reg(pciebase_le, (0x190 >> 2), 0xffffffff);
+ break;
+ case PIC_PCIE_XLSB0_LINK3_IRQ:
+ nlm_write_reg(pciebase_le, (0x194 >> 2), 0xffffffff);
+ break;
+ }
+}
+
int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
return get_irq_vector(dev);
@@ -253,6 +305,31 @@
pr_info("Registering XLR/XLS PCIX/PCIE Controller.\n");
register_pci_controller(&nlm_pci_controller);
+ /*
+ * 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 {
+ /* XLR PCI controller ACK */
+ irq_set_handler_data(PIC_PCIE_XLSB0_LINK3_IRQ, xlr_pci_ack);
+ }
+
return 0;
}