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Diffstat (limited to 'target/linux/layerscape/patches-5.4/812-pcie-0004-pci-add-support-aer-pme-interrupts-with-none-MSI-MSI.patch')
-rw-r--r--target/linux/layerscape/patches-5.4/812-pcie-0004-pci-add-support-aer-pme-interrupts-with-none-MSI-MSI.patch239
1 files changed, 0 insertions, 239 deletions
diff --git a/target/linux/layerscape/patches-5.4/812-pcie-0004-pci-add-support-aer-pme-interrupts-with-none-MSI-MSI.patch b/target/linux/layerscape/patches-5.4/812-pcie-0004-pci-add-support-aer-pme-interrupts-with-none-MSI-MSI.patch
deleted file mode 100644
index 9c359d24b9..0000000000
--- a/target/linux/layerscape/patches-5.4/812-pcie-0004-pci-add-support-aer-pme-interrupts-with-none-MSI-MSI.patch
+++ /dev/null
@@ -1,239 +0,0 @@
-From dc17fd4b8c27ca47fb5d9113df715579bc4a04a3 Mon Sep 17 00:00:00 2001
-From: Po Liu <po.liu@nxp.com>
-Date: Fri, 30 Sep 2016 17:11:37 +0800
-Subject: [PATCH] pci:add support aer/pme interrupts with none MSI/MSI-X/INTx
- mode
-
-On some platforms, root port doesn't support MSI/MSI-X/INTx in RC mode.
-When chip support the aer/pme interrupts with none MSI/MSI-X/INTx mode,
-maybe there is interrupt line for aer pme etc. Search the interrupt
-number in the fdt file. Then fixup the dev->irq with it.
-
-Signed-off-by: Po Liu <po.liu@nxp.com>
-Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
----
- .../devicetree/bindings/pci/layerscape-pci.txt | 13 +++++--
- arch/arm/kernel/bios32.c | 44 ++++++++++++++++++++++
- arch/arm64/kernel/pci.c | 44 ++++++++++++++++++++++
- drivers/pci/pcie/portdrv_core.c | 29 ++++++++++++++
- include/linux/pci.h | 1 +
- 5 files changed, 127 insertions(+), 4 deletions(-)
-
---- a/Documentation/devicetree/bindings/pci/layerscape-pci.txt
-+++ b/Documentation/devicetree/bindings/pci/layerscape-pci.txt
-@@ -26,8 +26,12 @@ Required properties:
- - reg: base addresses and lengths of the PCIe controller register blocks.
- - interrupts: A list of interrupt outputs of the controller. Must contain an
- entry for each entry in the interrupt-names property.
--- interrupt-names: Must include the following entries:
-- "intr": The interrupt that is asserted for controller interrupts
-+- interrupt-names: It could include the following entries:
-+ "aer": Asserted for aer interrupt when chip support the aer interrupt with
-+ none MSI/MSI-X/INTx mode,but there is interrupt line for aer.
-+ "pme": Asserted for pme interrupt when chip support the pme interrupt with
-+ none MSI/MSI-X/INTx mode,but there is interrupt line for pme.
-+ ......
- - fsl,pcie-scfg: Must include two entries.
- The first entry must be a link to the SCFG device node
- The second entry must be '0' or '1' based on physical PCIe controller index.
-@@ -43,8 +47,9 @@ Example:
- reg = <0x00 0x03400000 0x0 0x00010000 /* controller registers */
- 0x40 0x00000000 0x0 0x00002000>; /* configuration space */
- reg-names = "regs", "config";
-- interrupts = <GIC_SPI 177 IRQ_TYPE_LEVEL_HIGH>; /* controller interrupt */
-- interrupt-names = "intr";
-+ interrupts = <GIC_SPI 176 IRQ_TYPE_LEVEL_HIGH>, /* aer interrupt */
-+ <GIC_SPI 177 IRQ_TYPE_LEVEL_HIGH>; /* pme interrupt */
-+ interrupt-names = "aer", "pme";
- fsl,pcie-scfg = <&scfg 0>;
- #address-cells = <3>;
- #size-cells = <2>;
---- a/arch/arm/kernel/bios32.c
-+++ b/arch/arm/kernel/bios32.c
-@@ -12,11 +12,14 @@
- #include <linux/slab.h>
- #include <linux/init.h>
- #include <linux/io.h>
-+#include <linux/of_irq.h>
-
- #include <asm/mach-types.h>
- #include <asm/mach/map.h>
- #include <asm/mach/pci.h>
-
-+#include "../../../drivers/pci/pcie/portdrv.h"
-+
- static int debug_pci;
-
- /*
-@@ -65,6 +68,47 @@ void pcibios_report_status(u_int status_
- }
-
- /*
-+ * Check device tree if the service interrupts are there
-+ */
-+int pcibios_check_service_irqs(struct pci_dev *dev, int *irqs, int mask)
-+{
-+ int ret, count = 0;
-+ struct device_node *np = NULL;
-+
-+ if (dev->bus->dev.of_node)
-+ np = dev->bus->dev.of_node;
-+
-+ if (np == NULL)
-+ return 0;
-+
-+ if (!IS_ENABLED(CONFIG_OF_IRQ))
-+ return 0;
-+
-+ /* If root port doesn't support MSI/MSI-X/INTx in RC mode,
-+ * request irq for aer
-+ */
-+ if (mask & PCIE_PORT_SERVICE_AER) {
-+ ret = of_irq_get_byname(np, "aer");
-+ if (ret > 0) {
-+ irqs[PCIE_PORT_SERVICE_AER_SHIFT] = ret;
-+ count++;
-+ }
-+ }
-+
-+ if (mask & PCIE_PORT_SERVICE_PME) {
-+ ret = of_irq_get_byname(np, "pme");
-+ if (ret > 0) {
-+ irqs[PCIE_PORT_SERVICE_PME_SHIFT] = ret;
-+ count++;
-+ }
-+ }
-+
-+ /* TODO: add more service interrupts if there it is in the device tree*/
-+
-+ return count;
-+}
-+
-+/*
- * We don't use this to fix the device, but initialisation of it.
- * It's not the correct use for this, but it works.
- * Note that the arbiter/ISA bridge appears to be buggy, specifically in
---- a/arch/arm64/kernel/pci.c
-+++ b/arch/arm64/kernel/pci.c
-@@ -13,11 +13,14 @@
- #include <linux/mm.h>
- #include <linux/of_pci.h>
- #include <linux/of_platform.h>
-+#include <linux/of_irq.h>
- #include <linux/pci.h>
- #include <linux/pci-acpi.h>
- #include <linux/pci-ecam.h>
- #include <linux/slab.h>
-
-+#include "../../../drivers/pci/pcie/portdrv.h"
-+
- #ifdef CONFIG_ACPI
- /*
- * Try to assign the IRQ number when probing a new device
-@@ -32,6 +35,47 @@ int pcibios_alloc_irq(struct pci_dev *de
- #endif
-
- /*
-+ * Check device tree if the service interrupts are there
-+ */
-+int pcibios_check_service_irqs(struct pci_dev *dev, int *irqs, int mask)
-+{
-+ int ret, count = 0;
-+ struct device_node *np = NULL;
-+
-+ if (dev->bus->dev.of_node)
-+ np = dev->bus->dev.of_node;
-+
-+ if (np == NULL)
-+ return 0;
-+
-+ if (!IS_ENABLED(CONFIG_OF_IRQ))
-+ return 0;
-+
-+ /* If root port doesn't support MSI/MSI-X/INTx in RC mode,
-+ * request irq for aer
-+ */
-+ if (mask & PCIE_PORT_SERVICE_AER) {
-+ ret = of_irq_get_byname(np, "aer");
-+ if (ret > 0) {
-+ irqs[PCIE_PORT_SERVICE_AER_SHIFT] = ret;
-+ count++;
-+ }
-+ }
-+
-+ if (mask & PCIE_PORT_SERVICE_PME) {
-+ ret = of_irq_get_byname(np, "pme");
-+ if (ret > 0) {
-+ irqs[PCIE_PORT_SERVICE_PME_SHIFT] = ret;
-+ count++;
-+ }
-+ }
-+
-+ /* TODO: add more service interrupts if there it is in the device tree*/
-+
-+ return count;
-+}
-+
-+/*
- * raw_pci_read/write - Platform-specific PCI config space access.
- */
- int raw_pci_read(unsigned int domain, unsigned int bus,
---- a/drivers/pci/pcie/portdrv_core.c
-+++ b/drivers/pci/pcie/portdrv_core.c
-@@ -37,6 +37,20 @@ static void release_pcie_device(struct d
- kfree(to_pcie_device(dev));
- }
-
-+/**
-+ * pcibios_check_service_irqs - check irqs in the device tree
-+ * @dev: PCI Express port to handle
-+ * @irqs: Array of irqs to populate
-+ * @mask: Bitmask of port capabilities returned by get_port_device_capability()
-+ *
-+ * Return value: 0 means no service irqs in the device tree
-+ *
-+ */
-+int __weak pcibios_check_service_irqs(struct pci_dev *dev, int *irqs, int mask)
-+{
-+ return 0;
-+}
-+
- /*
- * Fill in *pme, *aer, *dpc with the relevant Interrupt Message Numbers if
- * services are enabled in "mask". Return the number of MSI/MSI-X vectors
-@@ -165,10 +179,25 @@ static int pcie_port_enable_irq_vec(stru
- static int pcie_init_service_irqs(struct pci_dev *dev, int *irqs, int mask)
- {
- int ret, i;
-+ int irq = -1;
-
- for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++)
- irqs[i] = -1;
-
-+ /* Check if some platforms owns independent irq pins for AER/PME etc.
-+ * Some platforms may own independent AER/PME interrupts and set
-+ * them in the device tree file.
-+ */
-+ ret = pcibios_check_service_irqs(dev, irqs, mask);
-+ if (ret) {
-+ if (dev->irq)
-+ irq = dev->irq;
-+ for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++)
-+ if (irqs[i] == -1)
-+ irqs[i] = irq;
-+ return 0;
-+ }
-+
- /*
- * If we support PME but can't use MSI/MSI-X for it, we have to
- * fall back to INTx or other interrupts, e.g., a system shared
---- a/include/linux/pci.h
-+++ b/include/linux/pci.h
-@@ -2024,6 +2024,7 @@ static inline void pcibios_penalize_isa_
- int pcibios_alloc_irq(struct pci_dev *dev);
- void pcibios_free_irq(struct pci_dev *dev);
- resource_size_t pcibios_default_alignment(void);
-+int pcibios_check_service_irqs(struct pci_dev *dev, int *irqs, int mask);
-
- #ifdef CONFIG_HIBERNATE_CALLBACKS
- extern struct dev_pm_ops pcibios_pm_ops;
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