diff options
Diffstat (limited to 'target/linux/layerscape/patches-4.4/7146-staging-fsl-mc-Added-GICv3-ITS-support-for-FSL-MC-MS.patch')
| -rw-r--r-- | target/linux/layerscape/patches-4.4/7146-staging-fsl-mc-Added-GICv3-ITS-support-for-FSL-MC-MS.patch | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/target/linux/layerscape/patches-4.4/7146-staging-fsl-mc-Added-GICv3-ITS-support-for-FSL-MC-MS.patch b/target/linux/layerscape/patches-4.4/7146-staging-fsl-mc-Added-GICv3-ITS-support-for-FSL-MC-MS.patch deleted file mode 100644 index 5b254d70d2..0000000000 --- a/target/linux/layerscape/patches-4.4/7146-staging-fsl-mc-Added-GICv3-ITS-support-for-FSL-MC-MS.patch +++ /dev/null @@ -1,167 +0,0 @@ -From 85cb8ae26b6c69f0a118f32b7b7cd4f22d782da3 Mon Sep 17 00:00:00 2001 -From: "J. German Rivera" <German.Rivera@freescale.com> -Date: Wed, 6 Jan 2016 16:03:22 -0600 -Subject: [PATCH 146/226] staging: fsl-mc: Added GICv3-ITS support for FSL-MC - MSIs - -Added platform-specific MSI support layer for FSL-MC devices. - -Signed-off-by: J. German Rivera <German.Rivera@freescale.com> -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ---- - drivers/staging/fsl-mc/bus/Makefile | 1 + - .../staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c | 127 ++++++++++++++++++++ - drivers/staging/fsl-mc/include/mc-private.h | 4 + - 3 files changed, 132 insertions(+) - create mode 100644 drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c - ---- a/drivers/staging/fsl-mc/bus/Makefile -+++ b/drivers/staging/fsl-mc/bus/Makefile -@@ -14,5 +14,6 @@ mc-bus-driver-objs := mc-bus.o \ - dprc-driver.o \ - mc-allocator.o \ - mc-msi.o \ -+ irq-gic-v3-its-fsl-mc-msi.o \ - dpmcp.o \ - dpbp.o ---- /dev/null -+++ b/drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c -@@ -0,0 +1,127 @@ -+/* -+ * Freescale Management Complex (MC) bus driver MSI support -+ * -+ * Copyright (C) 2015 Freescale Semiconductor, Inc. -+ * Author: German Rivera <German.Rivera@freescale.com> -+ * -+ * This file is licensed under the terms of the GNU General Public -+ * License version 2. This program is licensed "as is" without any -+ * warranty of any kind, whether express or implied. -+ */ -+ -+#include "../include/mc-private.h" -+#include <linux/of_device.h> -+#include <linux/of_address.h> -+#include <linux/irqchip/arm-gic-v3.h> -+#include <linux/irq.h> -+#include <linux/msi.h> -+#include <linux/of.h> -+#include <linux/of_irq.h> -+#include "../include/mc-sys.h" -+#include "dprc-cmd.h" -+ -+static struct irq_chip its_msi_irq_chip = { -+ .name = "fsl-mc-bus-msi", -+ .irq_mask = irq_chip_mask_parent, -+ .irq_unmask = irq_chip_unmask_parent, -+ .irq_eoi = irq_chip_eoi_parent, -+ .irq_set_affinity = msi_domain_set_affinity -+}; -+ -+static int its_fsl_mc_msi_prepare(struct irq_domain *msi_domain, -+ struct device *dev, -+ int nvec, msi_alloc_info_t *info) -+{ -+ struct fsl_mc_device *mc_bus_dev; -+ struct msi_domain_info *msi_info; -+ -+ if (WARN_ON(dev->bus != &fsl_mc_bus_type)) -+ return -EINVAL; -+ -+ mc_bus_dev = to_fsl_mc_device(dev); -+ if (WARN_ON(!(mc_bus_dev->flags & FSL_MC_IS_DPRC))) -+ return -EINVAL; -+ -+ /* -+ * Set the device Id to be passed to the GIC-ITS: -+ * -+ * NOTE: This device id corresponds to the IOMMU stream ID -+ * associated with the DPRC object (ICID). -+ */ -+ info->scratchpad[0].ul = mc_bus_dev->icid; -+ msi_info = msi_get_domain_info(msi_domain->parent); -+ return msi_info->ops->msi_prepare(msi_domain->parent, dev, nvec, info); -+} -+ -+static struct msi_domain_ops its_fsl_mc_msi_ops = { -+ .msi_prepare = its_fsl_mc_msi_prepare, -+}; -+ -+static struct msi_domain_info its_fsl_mc_msi_domain_info = { -+ .flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS), -+ .ops = &its_fsl_mc_msi_ops, -+ .chip = &its_msi_irq_chip, -+}; -+ -+static const struct of_device_id its_device_id[] = { -+ { .compatible = "arm,gic-v3-its", }, -+ {}, -+}; -+ -+int __init its_fsl_mc_msi_init(void) -+{ -+ struct device_node *np; -+ struct irq_domain *parent; -+ struct irq_domain *mc_msi_domain; -+ -+ for (np = of_find_matching_node(NULL, its_device_id); np; -+ np = of_find_matching_node(np, its_device_id)) { -+ if (!of_property_read_bool(np, "msi-controller")) -+ continue; -+ -+ parent = irq_find_matching_host(np, DOMAIN_BUS_NEXUS); -+ if (!parent || !msi_get_domain_info(parent)) { -+ pr_err("%s: unable to locate ITS domain\n", -+ np->full_name); -+ continue; -+ } -+ -+ mc_msi_domain = fsl_mc_msi_create_irq_domain( -+ of_node_to_fwnode(np), -+ &its_fsl_mc_msi_domain_info, -+ parent); -+ if (!mc_msi_domain) { -+ pr_err("%s: unable to create fsl-mc domain\n", -+ np->full_name); -+ continue; -+ } -+ -+ WARN_ON(mc_msi_domain-> -+ host_data != &its_fsl_mc_msi_domain_info); -+ -+ pr_info("fsl-mc MSI: %s domain created\n", np->full_name); -+ } -+ -+ return 0; -+} -+ -+void its_fsl_mc_msi_cleanup(void) -+{ -+ struct device_node *np; -+ -+ for (np = of_find_matching_node(NULL, its_device_id); np; -+ np = of_find_matching_node(np, its_device_id)) { -+ struct irq_domain *mc_msi_domain = irq_find_matching_host( -+ np, -+ DOMAIN_BUS_FSL_MC_MSI); -+ -+ if (!of_property_read_bool(np, "msi-controller")) -+ continue; -+ -+ mc_msi_domain = irq_find_matching_host(np, -+ DOMAIN_BUS_FSL_MC_MSI); -+ if (mc_msi_domain && -+ mc_msi_domain->host_data == &its_fsl_mc_msi_domain_info) -+ irq_domain_remove(mc_msi_domain); -+ } -+} ---- a/drivers/staging/fsl-mc/include/mc-private.h -+++ b/drivers/staging/fsl-mc/include/mc-private.h -@@ -133,4 +133,8 @@ int fsl_mc_msi_domain_alloc_irqs(struct - - void fsl_mc_msi_domain_free_irqs(struct device *dev); - -+int __init its_fsl_mc_msi_init(void); -+ -+void its_fsl_mc_msi_cleanup(void); -+ - #endif /* _FSL_MC_PRIVATE_H_ */ |