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path: root/target/linux/cns3xxx/patches-3.18/110-pci_isolated_interrupts.patch
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Diffstat (limited to 'target/linux/cns3xxx/patches-3.18/110-pci_isolated_interrupts.patch')
-rw-r--r--target/linux/cns3xxx/patches-3.18/110-pci_isolated_interrupts.patch188
1 files changed, 0 insertions, 188 deletions
diff --git a/target/linux/cns3xxx/patches-3.18/110-pci_isolated_interrupts.patch b/target/linux/cns3xxx/patches-3.18/110-pci_isolated_interrupts.patch
deleted file mode 100644
index b7e07ff22a..0000000000
--- a/target/linux/cns3xxx/patches-3.18/110-pci_isolated_interrupts.patch
+++ /dev/null
@@ -1,188 +0,0 @@
---- a/arch/arm/mach-cns3xxx/laguna.c
-+++ b/arch/arm/mach-cns3xxx/laguna.c
-@@ -21,6 +21,7 @@
- #include <linux/kernel.h>
- #include <linux/compiler.h>
- #include <linux/io.h>
-+#include <linux/irq.h>
- #include <linux/gpio.h>
- #include <linux/dma-mapping.h>
- #include <linux/serial_core.h>
-@@ -872,6 +873,47 @@ static int laguna_register_gpio(struct g
- return ret;
- }
-
-+/* allow disabling of external isolated PCIe IRQs */
-+static int cns3xxx_pciextirq = 1;
-+static int __init cns3xxx_pciextirq_disable(char *s)
-+{
-+ cns3xxx_pciextirq = 0;
-+ return 1;
-+}
-+__setup("noextirq", cns3xxx_pciextirq_disable);
-+
-+static int __init laguna_pcie_init_irq(void)
-+{
-+ u32 __iomem *mem = (void __iomem *)(CNS3XXX_GPIOB_BASE_VIRT + 0x0004);
-+ u32 reg = (__raw_readl(mem) >> 26) & 0xf;
-+ int irqs[] = {
-+ IRQ_CNS3XXX_EXTERNAL_PIN0,
-+ IRQ_CNS3XXX_EXTERNAL_PIN1,
-+ IRQ_CNS3XXX_EXTERNAL_PIN2,
-+ 154,
-+ };
-+
-+ if (!machine_is_gw2388())
-+ return 0;
-+
-+ /* Verify GPIOB[26:29] == 0001b indicating support for ext irqs */
-+ if (cns3xxx_pciextirq && reg != 1)
-+ cns3xxx_pciextirq = 0;
-+
-+ if (cns3xxx_pciextirq) {
-+ printk("laguna: using isolated PCI interrupts:"
-+ " irq%d/irq%d/irq%d/irq%d\n",
-+ irqs[0], irqs[1], irqs[2], irqs[3]);
-+ cns3xxx_pcie_set_irqs(0, irqs);
-+ } else {
-+ printk("laguna: using shared PCI interrupts: irq%d\n",
-+ IRQ_CNS3XXX_PCIE0_DEVICE);
-+ }
-+
-+ return 0;
-+}
-+subsys_initcall(laguna_pcie_init_irq);
-+
- static int __init laguna_model_setup(void)
- {
- u32 __iomem *mem;
-@@ -883,8 +925,33 @@ 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);
-- cns3xxx_gpio_init(32, 32, CNS3XXX_GPIOB_BASE_VIRT, IRQ_CNS3XXX_GPIOB,
-- NR_IRQS_CNS3XXX + 32);
-+
-+ /*
-+ * If pcie external interrupts are supported and desired
-+ * configure IRQ types and configure pin function.
-+ * Note that cns3xxx_pciextirq is enabled by default, but can be
-+ * unset via the 'noextirq' kernel param or by laguna_pcie_init() if
-+ * the baseboard model does not support this hardware feature.
-+ */
-+ if (cns3xxx_pciextirq) {
-+ mem = (void __iomem *)(CNS3XXX_MISC_BASE_VIRT + 0x0018);
-+ reg = __raw_readl(mem);
-+ /* GPIO26 is gpio, EXT_INT[0:2] not gpio func */
-+ reg &= ~0x3c000000;
-+ reg |= 0x38000000;
-+ __raw_writel(reg, mem);
-+
-+ cns3xxx_gpio_init(32, 32, CNS3XXX_GPIOB_BASE_VIRT,
-+ IRQ_CNS3XXX_GPIOB, NR_IRQS_CNS3XXX + 32);
-+
-+ irq_set_irq_type(154, IRQ_TYPE_LEVEL_LOW);
-+ irq_set_irq_type(93, IRQ_TYPE_LEVEL_HIGH);
-+ irq_set_irq_type(94, IRQ_TYPE_LEVEL_HIGH);
-+ irq_set_irq_type(95, IRQ_TYPE_LEVEL_HIGH);
-+ } else {
-+ cns3xxx_gpio_init(32, 32, CNS3XXX_GPIOB_BASE_VIRT,
-+ IRQ_CNS3XXX_GPIOB, NR_IRQS_CNS3XXX + 32);
-+ }
-
- if (strncmp(laguna_info.model, "GW", 2) == 0) {
- if (laguna_info.config_bitmap & ETH0_LOAD)
---- a/arch/arm/mach-cns3xxx/pcie.c
-+++ b/arch/arm/mach-cns3xxx/pcie.c
-@@ -18,6 +18,7 @@
- #include <linux/io.h>
- #include <linux/ioport.h>
- #include <linux/interrupt.h>
-+#include <linux/irq.h>
- #include <linux/ptrace.h>
- #include <asm/mach/map.h>
- #include "cns3xxx.h"
-@@ -27,7 +28,7 @@ struct cns3xxx_pcie {
- void __iomem *host_regs; /* PCI config registers for host bridge */
- void __iomem *cfg0_regs; /* PCI Type 0 config registers */
- void __iomem *cfg1_regs; /* PCI Type 1 config registers */
-- unsigned int irqs[2];
-+ unsigned int irqs[5];
- struct resource res_io;
- struct resource res_mem;
- struct hw_pci hw_pci;
-@@ -97,7 +98,7 @@ static inline int check_master_abort(str
- void __iomem *host_base;
- u32 sreg, ereg;
-
-- host_base = (void __iomem *) cnspci->cfg_bases[CNS3XXX_HOST_TYPE].virtual;
-+ host_base = (void __iomem *) cnspci->host_regs;
- sreg = __raw_readw(host_base + 0x6) & 0xF900;
- ereg = __raw_readl(host_base + 0x104); // Uncorrectable Error Status Reg
-
-@@ -251,7 +252,7 @@ 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[!!dev->bus->number];
-+ 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),
-@@ -277,7 +278,12 @@ static struct cns3xxx_pcie cns3xxx_pcie[
- .end = CNS3XXX_PCIE0_HOST_BASE - 1, /* 176 MiB */
- .flags = IORESOURCE_MEM,
- },
-- .irqs = { IRQ_CNS3XXX_PCIE0_RC, IRQ_CNS3XXX_PCIE0_DEVICE, },
-+ .irqs = { IRQ_CNS3XXX_PCIE0_RC,
-+ IRQ_CNS3XXX_PCIE0_DEVICE,
-+ IRQ_CNS3XXX_PCIE0_DEVICE,
-+ IRQ_CNS3XXX_PCIE0_DEVICE,
-+ IRQ_CNS3XXX_PCIE0_DEVICE,
-+ },
- .hw_pci = {
- .domain = 0,
- .nr_controllers = 1,
-@@ -302,7 +308,13 @@ static struct cns3xxx_pcie cns3xxx_pcie[
- .end = CNS3XXX_PCIE1_HOST_BASE - 1, /* 176 MiB */
- .flags = IORESOURCE_MEM,
- },
-- .irqs = { IRQ_CNS3XXX_PCIE1_RC, IRQ_CNS3XXX_PCIE1_DEVICE, },
-+ .irqs = {
-+ IRQ_CNS3XXX_PCIE1_RC,
-+ IRQ_CNS3XXX_PCIE1_DEVICE,
-+ IRQ_CNS3XXX_PCIE1_DEVICE,
-+ IRQ_CNS3XXX_PCIE1_DEVICE,
-+ IRQ_CNS3XXX_PCIE1_DEVICE,
-+ },
- .hw_pci = {
- .domain = 1,
- .nr_controllers = 1,
-@@ -412,6 +424,14 @@ static int cns3xxx_pcie_abort_handler(un
- return 0;
- }
-
-+void __init cns3xxx_pcie_set_irqs(int bus, int *irqs)
-+{
-+ int i;
-+
-+ for (i = 0; i < 4; i++)
-+ cns3xxx_pcie[bus].irqs[i + 1] = irqs[i];
-+}
-+
- void __init cns3xxx_pcie_init_late(void)
- {
- int i;
---- a/arch/arm/mach-cns3xxx/core.h
-+++ b/arch/arm/mach-cns3xxx/core.h
-@@ -18,8 +18,10 @@ extern void cns3xxx_timer_init(void);
-
- #ifdef CONFIG_PCI
- extern void __init cns3xxx_pcie_init_late(void);
-+extern void __init cns3xxx_pcie_set_irqs(int bus, int *irqs);
- #else
- static inline void __init cns3xxx_pcie_init_late(void) {}
-+static inline void cns3xxx_pcie_set_irqs(int bus, int *irqs) {}
- #endif
-
- void __init cns3xxx_map_io(void);
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-30 08:15:52 +0000