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-rw-r--r--target/linux/layerscape/patches-4.9/702-pci-support-layerscape.patch2062
1 files changed, 2062 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-4.9/702-pci-support-layerscape.patch b/target/linux/layerscape/patches-4.9/702-pci-support-layerscape.patch
new file mode 100644
index 0000000..c3dcd73
--- /dev/null
+++ b/target/linux/layerscape/patches-4.9/702-pci-support-layerscape.patch
@@ -0,0 +1,2062 @@
+From c4813da334b0c31e9c55eea015f1e898e84ff45b Mon Sep 17 00:00:00 2001
+From: Yangbo Lu <yangbo.lu@nxp.com>
+Date: Mon, 25 Sep 2017 11:04:10 +0800
+Subject: [PATCH] pci: support layerscape
+
+This is a integrated patch for layerscape pcie support.
+
+Signed-off-by: Po Liu <po.liu@nxp.com>
+Signed-off-by: Liu Gang <Gang.Liu@nxp.com>
+Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com>
+Signed-off-by: hongbo.wang <hongbo.wang@nxp.com>
+Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
+Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
+Signed-off-by: Mingkai Hu <mingkai.hu@nxp.com>
+Signed-off-by: Christoph Hellwig <hch@lst.de>
+Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
+---
+ drivers/irqchip/irq-ls-scfg-msi.c | 256 +++++++--
+ drivers/pci/host/Makefile | 2 +-
+ drivers/pci/host/pci-layerscape-ep-debugfs.c | 758 +++++++++++++++++++++++++++
+ drivers/pci/host/pci-layerscape-ep.c | 309 +++++++++++
+ drivers/pci/host/pci-layerscape-ep.h | 115 ++++
+ drivers/pci/host/pci-layerscape.c | 37 +-
+ drivers/pci/host/pcie-designware.c | 6 +
+ drivers/pci/host/pcie-designware.h | 1 +
+ drivers/pci/pcie/portdrv_core.c | 181 +++----
+ include/linux/pci.h | 1 +
+ 10 files changed, 1518 insertions(+), 148 deletions(-)
+ create mode 100644 drivers/pci/host/pci-layerscape-ep-debugfs.c
+ create mode 100644 drivers/pci/host/pci-layerscape-ep.c
+ create mode 100644 drivers/pci/host/pci-layerscape-ep.h
+
+diff --git a/drivers/irqchip/irq-ls-scfg-msi.c b/drivers/irqchip/irq-ls-scfg-msi.c
+index 02cca74c..119f4ef0 100644
+--- a/drivers/irqchip/irq-ls-scfg-msi.c
++++ b/drivers/irqchip/irq-ls-scfg-msi.c
+@@ -17,13 +17,32 @@
+ #include <linux/irq.h>
+ #include <linux/irqchip/chained_irq.h>
+ #include <linux/irqdomain.h>
++#include <linux/of_irq.h>
+ #include <linux/of_pci.h>
+ #include <linux/of_platform.h>
+ #include <linux/spinlock.h>
+
+-#define MSI_MAX_IRQS 32
+-#define MSI_IBS_SHIFT 3
+-#define MSIR 4
++#define MSI_IRQS_PER_MSIR 32
++#define MSI_MSIR_OFFSET 4
++
++#define MSI_LS1043V1_1_IRQS_PER_MSIR 8
++#define MSI_LS1043V1_1_MSIR_OFFSET 0x10
++
++struct ls_scfg_msi_cfg {
++ u32 ibs_shift; /* Shift of interrupt bit select */
++ u32 msir_irqs; /* The irq number per MSIR */
++ u32 msir_base; /* The base address of MSIR */
++};
++
++struct ls_scfg_msir {
++ struct ls_scfg_msi *msi_data;
++ unsigned int index;
++ unsigned int gic_irq;
++ unsigned int bit_start;
++ unsigned int bit_end;
++ unsigned int srs; /* Shared interrupt register select */
++ void __iomem *reg;
++};
+
+ struct ls_scfg_msi {
+ spinlock_t lock;
+@@ -32,8 +51,11 @@ struct ls_scfg_msi {
+ struct irq_domain *msi_domain;
+ void __iomem *regs;
+ phys_addr_t msiir_addr;
+- int irq;
+- DECLARE_BITMAP(used, MSI_MAX_IRQS);
++ struct ls_scfg_msi_cfg *cfg;
++ u32 msir_num;
++ struct ls_scfg_msir *msir;
++ u32 irqs_num;
++ unsigned long *used;
+ };
+
+ static struct irq_chip ls_scfg_msi_irq_chip = {
+@@ -49,19 +71,56 @@ static struct msi_domain_info ls_scfg_msi_domain_info = {
+ .chip = &ls_scfg_msi_irq_chip,
+ };
+
++static int msi_affinity_flag = 1;
++
++static int __init early_parse_ls_scfg_msi(char *p)
++{
++ if (p && strncmp(p, "no-affinity", 11) == 0)
++ msi_affinity_flag = 0;
++ else
++ msi_affinity_flag = 1;
++
++ return 0;
++}
++early_param("lsmsi", early_parse_ls_scfg_msi);
++
+ static void ls_scfg_msi_compose_msg(struct irq_data *data, struct msi_msg *msg)
+ {
+ struct ls_scfg_msi *msi_data = irq_data_get_irq_chip_data(data);
+
+ msg->address_hi = upper_32_bits(msi_data->msiir_addr);
+ msg->address_lo = lower_32_bits(msi_data->msiir_addr);
+- msg->data = data->hwirq << MSI_IBS_SHIFT;
++ msg->data = data->hwirq;
++
++ if (msi_affinity_flag)
++ msg->data |= cpumask_first(data->common->affinity);
+ }
+
+ static int ls_scfg_msi_set_affinity(struct irq_data *irq_data,
+ const struct cpumask *mask, bool force)
+ {
+- return -EINVAL;
++ struct ls_scfg_msi *msi_data = irq_data_get_irq_chip_data(irq_data);
++ u32 cpu;
++
++ if (!msi_affinity_flag)
++ return -EINVAL;
++
++ if (!force)
++ cpu = cpumask_any_and(mask, cpu_online_mask);
++ else
++ cpu = cpumask_first(mask);
++
++ if (cpu >= msi_data->msir_num)
++ return -EINVAL;
++
++ if (msi_data->msir[cpu].gic_irq <= 0) {
++ pr_warn("cannot bind the irq to cpu%d\n", cpu);
++ return -EINVAL;
++ }
++
++ cpumask_copy(irq_data->common->affinity, mask);
++
++ return IRQ_SET_MASK_OK;
+ }
+
+ static struct irq_chip ls_scfg_msi_parent_chip = {
+@@ -81,8 +140,8 @@ static int ls_scfg_msi_domain_irq_alloc(struct irq_domain *domain,
+ WARN_ON(nr_irqs != 1);
+
+ spin_lock(&msi_data->lock);
+- pos = find_first_zero_bit(msi_data->used, MSI_MAX_IRQS);
+- if (pos < MSI_MAX_IRQS)
++ pos = find_first_zero_bit(msi_data->used, msi_data->irqs_num);
++ if (pos < msi_data->irqs_num)
+ __set_bit(pos, msi_data->used);
+ else
+ err = -ENOSPC;
+@@ -106,7 +165,7 @@ static void ls_scfg_msi_domain_irq_free(struct irq_domain *domain,
+ int pos;
+
+ pos = d->hwirq;
+- if (pos < 0 || pos >= MSI_MAX_IRQS) {
++ if (pos < 0 || pos >= msi_data->irqs_num) {
+ pr_err("failed to teardown msi. Invalid hwirq %d\n", pos);
+ return;
+ }
+@@ -123,15 +182,22 @@ static const struct irq_domain_ops ls_scfg_msi_domain_ops = {
+
+ static void ls_scfg_msi_irq_handler(struct irq_desc *desc)
+ {
+- struct ls_scfg_msi *msi_data = irq_desc_get_handler_data(desc);
++ struct ls_scfg_msir *msir = irq_desc_get_handler_data(desc);
++ struct ls_scfg_msi *msi_data = msir->msi_data;
+ unsigned long val;
+- int pos, virq;
++ int pos, size, virq, hwirq;
+
+ chained_irq_enter(irq_desc_get_chip(desc), desc);
+
+- val = ioread32be(msi_data->regs + MSIR);
+- for_each_set_bit(pos, &val, MSI_MAX_IRQS) {
+- virq = irq_find_mapping(msi_data->parent, (31 - pos));
++ val = ioread32be(msir->reg);
++
++ pos = msir->bit_start;
++ size = msir->bit_end + 1;
++
++ for_each_set_bit_from(pos, &val, size) {
++ hwirq = ((msir->bit_end - pos) << msi_data->cfg->ibs_shift) |
++ msir->srs;
++ virq = irq_find_mapping(msi_data->parent, hwirq);
+ if (virq)
+ generic_handle_irq(virq);
+ }
+@@ -143,7 +209,7 @@ static int ls_scfg_msi_domains_init(struct ls_scfg_msi *msi_data)
+ {
+ /* Initialize MSI domain parent */
+ msi_data->parent = irq_domain_add_linear(NULL,
+- MSI_MAX_IRQS,
++ msi_data->irqs_num,
+ &ls_scfg_msi_domain_ops,
+ msi_data);
+ if (!msi_data->parent) {
+@@ -164,16 +230,117 @@ static int ls_scfg_msi_domains_init(struct ls_scfg_msi *msi_data)
+ return 0;
+ }
+
++static int ls_scfg_msi_setup_hwirq(struct ls_scfg_msi *msi_data, int index)
++{
++ struct ls_scfg_msir *msir;
++ int virq, i, hwirq;
++
++ virq = platform_get_irq(msi_data->pdev, index);
++ if (virq <= 0)
++ return -ENODEV;
++
++ msir = &msi_data->msir[index];
++ msir->index = index;
++ msir->msi_data = msi_data;
++ msir->gic_irq = virq;
++ msir->reg = msi_data->regs + msi_data->cfg->msir_base + 4 * index;
++
++ if (msi_data->cfg->msir_irqs == MSI_LS1043V1_1_IRQS_PER_MSIR) {
++ msir->bit_start = 32 - ((msir->index + 1) *
++ MSI_LS1043V1_1_IRQS_PER_MSIR);
++ msir->bit_end = msir->bit_start +
++ MSI_LS1043V1_1_IRQS_PER_MSIR - 1;
++ } else {
++ msir->bit_start = 0;
++ msir->bit_end = msi_data->cfg->msir_irqs - 1;
++ }
++
++ irq_set_chained_handler_and_data(msir->gic_irq,
++ ls_scfg_msi_irq_handler,
++ msir);
++
++ if (msi_affinity_flag) {
++ /* Associate MSIR interrupt to the cpu */
++ irq_set_affinity(msir->gic_irq, get_cpu_mask(index));
++ msir->srs = 0; /* This value is determined by the CPU */
++ } else
++ msir->srs = index;
++
++ /* Release the hwirqs corresponding to this MSIR */
++ if (!msi_affinity_flag || msir->index == 0) {
++ for (i = 0; i < msi_data->cfg->msir_irqs; i++) {
++ hwirq = i << msi_data->cfg->ibs_shift | msir->index;
++ bitmap_clear(msi_data->used, hwirq, 1);
++ }
++ }
++
++ return 0;
++}
++
++static int ls_scfg_msi_teardown_hwirq(struct ls_scfg_msir *msir)
++{
++ struct ls_scfg_msi *msi_data = msir->msi_data;
++ int i, hwirq;
++
++ if (msir->gic_irq > 0)
++ irq_set_chained_handler_and_data(msir->gic_irq, NULL, NULL);
++
++ for (i = 0; i < msi_data->cfg->msir_irqs; i++) {
++ hwirq = i << msi_data->cfg->ibs_shift | msir->index;
++ bitmap_set(msi_data->used, hwirq, 1);
++ }
++
++ return 0;
++}
++
++static struct ls_scfg_msi_cfg ls1021_msi_cfg = {
++ .ibs_shift = 3,
++ .msir_irqs = MSI_IRQS_PER_MSIR,
++ .msir_base = MSI_MSIR_OFFSET,
++};
++
++static struct ls_scfg_msi_cfg ls1046_msi_cfg = {
++ .ibs_shift = 2,
++ .msir_irqs = MSI_IRQS_PER_MSIR,
++ .msir_base = MSI_MSIR_OFFSET,
++};
++
++static struct ls_scfg_msi_cfg ls1043_v1_1_msi_cfg = {
++ .ibs_shift = 2,
++ .msir_irqs = MSI_LS1043V1_1_IRQS_PER_MSIR,
++ .msir_base = MSI_LS1043V1_1_MSIR_OFFSET,
++};
++
++static const struct of_device_id ls_scfg_msi_id[] = {
++ /* The following two misspelled compatibles are obsolete */
++ { .compatible = "fsl,1s1021a-msi", .data = &ls1021_msi_cfg},
++ { .compatible = "fsl,1s1043a-msi", .data = &ls1021_msi_cfg},
++
++ { .compatible = "fsl,ls1021a-msi", .data = &ls1021_msi_cfg },
++ { .compatible = "fsl,ls1043a-msi", .data = &ls1021_msi_cfg },
++ { .compatible = "fsl,ls1043a-v1.1-msi", .data = &ls1043_v1_1_msi_cfg },
++ { .compatible = "fsl,ls1046a-msi", .data = &ls1046_msi_cfg },
++ {},
++};
++MODULE_DEVICE_TABLE(of, ls_scfg_msi_id);
++
+ static int ls_scfg_msi_probe(struct platform_device *pdev)
+ {
++ const struct of_device_id *match;
+ struct ls_scfg_msi *msi_data;
+ struct resource *res;
+- int ret;
++ int i, ret;
++
++ match = of_match_device(ls_scfg_msi_id, &pdev->dev);
++ if (!match)
++ return -ENODEV;
+
+ msi_data = devm_kzalloc(&pdev->dev, sizeof(*msi_data), GFP_KERNEL);
+ if (!msi_data)
+ return -ENOMEM;
+
++ msi_data->cfg = (struct ls_scfg_msi_cfg *) match->data;
++
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ msi_data->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(msi_data->regs)) {
+@@ -182,23 +349,48 @@ static int ls_scfg_msi_probe(struct platform_device *pdev)
+ }
+ msi_data->msiir_addr = res->start;
+
+- msi_data->irq = platform_get_irq(pdev, 0);
+- if (msi_data->irq <= 0) {
+- dev_err(&pdev->dev, "failed to get MSI irq\n");
+- return -ENODEV;
+- }
+-
+ msi_data->pdev = pdev;
+ spin_lock_init(&msi_data->lock);
+
++ msi_data->irqs_num = MSI_IRQS_PER_MSIR *
++ (1 << msi_data->cfg->ibs_shift);
++ msi_data->used = devm_kcalloc(&pdev->dev,
++ BITS_TO_LONGS(msi_data->irqs_num),
++ sizeof(*msi_data->used),
++ GFP_KERNEL);
++ if (!msi_data->used)
++ return -ENOMEM;
++ /*
++ * Reserve all the hwirqs
++ * The available hwirqs will be released in ls1_msi_setup_hwirq()
++ */
++ bitmap_set(msi_data->used, 0, msi_data->irqs_num);
++
++ msi_data->msir_num = of_irq_count(pdev->dev.of_node);
++
++ if (msi_affinity_flag) {
++ u32 cpu_num;
++
++ cpu_num = num_possible_cpus();
++ if (msi_data->msir_num >= cpu_num)
++ msi_data->msir_num = cpu_num;
++ else
++ msi_affinity_flag = 0;
++ }
++
++ msi_data->msir = devm_kcalloc(&pdev->dev, msi_data->msir_num,
++ sizeof(*msi_data->msir),
++ GFP_KERNEL);
++ if (!msi_data->msir)
++ return -ENOMEM;
++
++ for (i = 0; i < msi_data->msir_num; i++)
++ ls_scfg_msi_setup_hwirq(msi_data, i);
++
+ ret = ls_scfg_msi_domains_init(msi_data);
+ if (ret)
+ return ret;
+
+- irq_set_chained_handler_and_data(msi_data->irq,
+- ls_scfg_msi_irq_handler,
+- msi_data);
+-
+ platform_set_drvdata(pdev, msi_data);
+
+ return 0;
+@@ -207,8 +399,10 @@ static int ls_scfg_msi_probe(struct platform_device *pdev)
+ static int ls_scfg_msi_remove(struct platform_device *pdev)
+ {
+ struct ls_scfg_msi *msi_data = platform_get_drvdata(pdev);
++ int i;
+
+- irq_set_chained_handler_and_data(msi_data->irq, NULL, NULL);
++ for (i = 0; i < msi_data->msir_num; i++)
++ ls_scfg_msi_teardown_hwirq(&msi_data->msir[i]);
+
+ irq_domain_remove(msi_data->msi_domain);
+ irq_domain_remove(msi_data->parent);
+@@ -218,12 +412,6 @@ static int ls_scfg_msi_remove(struct platform_device *pdev)
+ return 0;
+ }
+
+-static const struct of_device_id ls_scfg_msi_id[] = {
+- { .compatible = "fsl,1s1021a-msi", },
+- { .compatible = "fsl,1s1043a-msi", },
+- {},
+-};
+-
+ static struct platform_driver ls_scfg_msi_driver = {
+ .driver = {
+ .name = "ls-scfg-msi",
+diff --git a/drivers/pci/host/Makefile b/drivers/pci/host/Makefile
+index 084cb498..88e87704 100644
+--- a/drivers/pci/host/Makefile
++++ b/drivers/pci/host/Makefile
+@@ -17,7 +17,7 @@ obj-$(CONFIG_PCIE_XILINX) += pcie-xilinx.o
+ obj-$(CONFIG_PCIE_XILINX_NWL) += pcie-xilinx-nwl.o
+ obj-$(CONFIG_PCI_XGENE) += pci-xgene.o
+ obj-$(CONFIG_PCI_XGENE_MSI) += pci-xgene-msi.o
+-obj-$(CONFIG_PCI_LAYERSCAPE) += pci-layerscape.o
++obj-$(CONFIG_PCI_LAYERSCAPE) += pci-layerscape.o pci-layerscape-ep.o pci-layerscape-ep-debugfs.o
+ obj-$(CONFIG_PCI_VERSATILE) += pci-versatile.o
+ obj-$(CONFIG_PCIE_IPROC) += pcie-iproc.o
+ obj-$(CONFIG_PCIE_IPROC_MSI) += pcie-iproc-msi.o
+diff --git a/drivers/pci/host/pci-layerscape-ep-debugfs.c b/drivers/pci/host/pci-layerscape-ep-debugfs.c
+new file mode 100644
+index 00000000..5f4870ba
+--- /dev/null
++++ b/drivers/pci/host/pci-layerscape-ep-debugfs.c
+@@ -0,0 +1,758 @@
++/*
++ * PCIe Endpoint driver for Freescale Layerscape SoCs
++ *
++ * Copyright (C) 2015 Freescale Semiconductor.
++ *
++ * Author: Minghuan Lian <Minghuan.Lian@freescale.com>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/debugfs.h>
++#include <linux/time.h>
++#include <linux/uaccess.h>
++#include <linux/kthread.h>
++#include <linux/slab.h>
++#include <linux/dmaengine.h>
++#include <linux/dma-mapping.h>
++#include <linux/freezer.h>
++
++#include <linux/completion.h>
++
++#include "pci-layerscape-ep.h"
++
++#define PCIE_ATU_INDEX3 (0x3 << 0)
++#define PCIE_ATU_INDEX2 (0x2 << 0)
++#define PCIE_ATU_INDEX1 (0x1 << 0)
++#define PCIE_ATU_INDEX0 (0x0 << 0)
++
++#define PCIE_BAR0_SIZE (4 * 1024) /* 4K */
++#define PCIE_BAR1_SIZE (8 * 1024) /* 8K for MSIX */
++#define PCIE_BAR2_SIZE (4 * 1024) /* 4K */
++#define PCIE_BAR4_SIZE (1 * 1024 * 1024) /* 1M */
++#define PCIE_MSI_OB_SIZE (4 * 1024) /* 4K */
++
++#define PCIE_MSI_MSG_ADDR_OFF 0x54
++#define PCIE_MSI_MSG_DATA_OFF 0x5c
++
++enum test_type {
++ TEST_TYPE_DMA,
++ TEST_TYPE_MEMCPY
++};
++
++enum test_dirt {
++ TEST_DIRT_READ,
++ TEST_DIRT_WRITE
++};
++
++enum test_status {
++ TEST_IDLE,
++ TEST_BUSY
++};
++
++struct ls_ep_test {
++ struct ls_ep_dev *ep;
++ void __iomem *cfg;
++ void __iomem *buf;
++ void __iomem *out;
++ void __iomem *msi;
++ dma_addr_t cfg_addr;
++ dma_addr_t buf_addr;
++ dma_addr_t out_addr;
++ dma_addr_t bus_addr;
++ dma_addr_t msi_addr;
++ u64 msi_msg_addr;
++ u16 msi_msg_data;
++ struct task_struct *thread;
++ spinlock_t lock;
++ struct completion done;
++ u32 len;
++ int loop;
++ char data;
++ enum test_dirt dirt;
++ enum test_type type;
++ enum test_status status;
++ u64 result; /* Mbps */
++ char cmd[256];
++};
++
++static int ls_pcie_ep_trigger_msi(struct ls_ep_test *test)
++{
++ if (!test->msi)
++ return -EINVAL;
++
++ iowrite32(test->msi_msg_data, test->msi);
++
++ return 0;
++}
++
++static int ls_pcie_ep_test_try_run(struct ls_ep_test *test)
++{
++ int ret;
++
++ spin_lock(&test->lock);
++ if (test->status == TEST_IDLE) {
++ test->status = TEST_BUSY;
++ ret = 0;
++ } else
++ ret = -EBUSY;
++ spin_unlock(&test->lock);
++
++ return ret;
++}
++
++static void ls_pcie_ep_test_done(struct ls_ep_test *test)
++{
++ spin_lock(&test->lock);
++ test->status = TEST_IDLE;
++ spin_unlock(&test->lock);
++}
++
++static void ls_pcie_ep_test_dma_cb(void *arg)
++{
++ struct ls_ep_test *test = arg;
++
++ complete(&test->done);
++}
++
++static int ls_pcie_ep_test_dma(struct ls_ep_test *test)
++{
++ dma_cap_mask_t mask;
++ struct dma_chan *chan;
++ struct dma_device *dma_dev;
++ dma_addr_t src, dst;
++ enum dma_data_direction direction;
++ enum dma_ctrl_flags dma_flags = DMA_CTRL_ACK | DMA_PREP_INTERRUPT;
++ struct timespec start, end, period;
++ int i = 0;
++
++ dma_cap_zero(mask);
++ dma_cap_set(DMA_MEMCPY, mask);
++
++ chan = dma_request_channel(mask, NULL, test);
++ if (!chan) {
++ pr_err("failed to request dma channel\n");
++ return -EINVAL;
++ }
++
++ memset(test->buf, test->data, test->len);
++
++ if (test->dirt == TEST_DIRT_WRITE) {
++ src = test->buf_addr;
++ dst = test->out_addr;
++ direction = DMA_TO_DEVICE;
++ } else {
++ src = test->out_addr;
++ dst = test->buf_addr;
++ direction = DMA_FROM_DEVICE;
++ }
++
++ dma_dev = chan->device;
++ dma_flags = DMA_CTRL_ACK | DMA_PREP_INTERRUPT;
++
++ dma_sync_single_for_device(&test->ep->dev, test->buf_addr,
++ test->len, direction);
++
++ set_freezable();
++
++ getrawmonotonic(&start);
++ while (!kthread_should_stop() && (i < test->loop)) {
++ struct dma_async_tx_descriptor *dma_desc;
++ dma_cookie_t dma_cookie = {0};
++ unsigned long tmo;
++ int status;
++
++ init_completion(&test->done);
++
++ dma_desc = dma_dev->device_prep_dma_memcpy(chan,
++ dst, src,
++ test->len,
++ dma_flags);
++ if (!dma_desc) {
++ pr_err("DMA desc constr failed...\n");
++ goto _err;
++ }
++
++ dma_desc->callback = ls_pcie_ep_test_dma_cb;
++ dma_desc->callback_param = test;
++ dma_cookie = dmaengine_submit(dma_desc);
++
++ if (dma_submit_error(dma_cookie)) {
++ pr_err("DMA submit error....\n");
++ goto _err;
++ }
++
++ /* Trigger the transaction */
++ dma_async_issue_pending(chan);
++
++ tmo = wait_for_completion_timeout(&test->done,
++ msecs_to_jiffies(5 * test->len));
++ if (tmo == 0) {
++ pr_err("Self-test copy timed out, disabling\n");
++ goto _err;
++ }
++
++ status = dma_async_is_tx_complete(chan, dma_cookie,
++ NULL, NULL);
++ if (status != DMA_COMPLETE) {
++ pr_err("got completion callback, but status is %s\n",
++ status == DMA_ERROR ? "error" : "in progress");
++ goto _err;
++ }
++
++ i++;
++ }
++
++ getrawmonotonic(&end);
++ period = timespec_sub(end, start);
++ test->result = test->len * 8ULL * i * 1000;
++ do_div(test->result, period.tv_sec * 1000 * 1000 * 1000 + period.tv_nsec);
++ dma_release_channel(chan);
++
++ return 0;
++
++_err:
++ dma_release_channel(chan);
++ test->result = 0;
++ return -EINVAL;
++}
++
++static int ls_pcie_ep_test_cpy(struct ls_ep_test *test)
++{
++ void *dst, *src;
++ struct timespec start, end, period;
++ int i = 0;
++
++ memset(test->buf, test->data, test->len);
++
++ if (test->dirt == TEST_DIRT_WRITE) {
++ dst = test->out;
++ src = test->buf;
++ } else {
++ dst = test->buf;
++ src = test->out;
++ }
++
++ getrawmonotonic(&start);
++ while (!kthread_should_stop() && i < test->loop) {
++ memcpy(dst, src, test->len);
++ i++;
++ }
++ getrawmonotonic(&end);
++
++ period = timespec_sub(end, start);
++ test->result = test->len * 8ULL * i * 1000;
++ do_div(test->result, period.tv_sec * 1000 * 1000 * 1000 + period.tv_nsec);
++
++ return 0;
++}
++
++int ls_pcie_ep_test_thread(void *arg)
++{
++ int ret;
++
++ struct ls_ep_test *test = arg;
++
++ if (test->type == TEST_TYPE_DMA)
++ ret = ls_pcie_ep_test_dma(test);
++ else
++ ret = ls_pcie_ep_test_cpy(test);
++
++ if (ret) {
++ pr_err("\n%s \ttest failed\n",
++ test->cmd);
++ test->result = 0;
++ } else
++ pr_err("\n%s \tthroughput:%lluMbps\n",
++ test->cmd, test->result);
++
++ ls_pcie_ep_test_done(test);
++
++ ls_pcie_ep_trigger_msi(test);
++
++ do_exit(0);
++}
++
++static int ls_pcie_ep_free_test(struct ls_ep_dev *ep)
++{
++ struct ls_ep_test *test = ep->driver_data;
++
++ if (!test)
++ return 0;
++
++ if (test->status == TEST_BUSY) {
++ kthread_stop(test->thread);
++ dev_info(&ep->dev,
++ "test is running please wait and run again\n");
++ return -EBUSY;
++ }
++
++ if (test->buf)
++ free_pages((unsigned long)test->buf,
++ get_order(PCIE_BAR4_SIZE));
++
++ if (test->cfg)
++ free_pages((unsigned long)test->cfg,
++ get_order(PCIE_BAR2_SIZE));
++
++ if (test->out)
++ iounmap(test->out);
++
++ kfree(test);
++ ep->driver_data = NULL;
++
++ return 0;
++}
++
++static int ls_pcie_ep_init_test(struct ls_ep_dev *ep, u64 bus_addr)
++{
++ struct ls_pcie *pcie = ep->pcie;
++ struct ls_ep_test *test = ep->driver_data;
++ int err;
++
++ if (test) {
++ dev_info(&ep->dev,
++ "Please use 'free' to remove the exiting test\n");
++ return -EBUSY;
++ }
++
++ test = kzalloc(sizeof(*test), GFP_KERNEL);
++ if (!test)
++ return -ENOMEM;
++ ep->driver_data = test;
++ test->ep = ep;
++ spin_lock_init(&test->lock);
++ test->status = TEST_IDLE;
++
++ test->buf = dma_alloc_coherent(pcie->dev, get_order(PCIE_BAR4_SIZE),
++ &test->buf_addr,
++ GFP_KERNEL);
++ if (!test->buf) {
++ dev_info(&ep->dev, "failed to get mem for bar4\n");
++ err = -ENOMEM;
++ goto _err;
++ }
++
++ test->cfg = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
++ get_order(PCIE_BAR2_SIZE));
++ if (!test->cfg) {
++ dev_info(&ep->dev, "failed to get mem for bar4\n");
++ err = -ENOMEM;
++ goto _err;
++ }
++ test->cfg_addr = virt_to_phys(test->cfg);
++
++ test->out_addr = pcie->out_base;
++ test->out = ioremap(test->out_addr, PCIE_BAR4_SIZE);
++ if (!test->out) {
++ dev_info(&ep->dev, "failed to map out\n");
++ err = -ENOMEM;
++ goto _err;
++ }
++
++ test->bus_addr = bus_addr;
++
++ test->msi_addr = test->out_addr + PCIE_BAR4_SIZE;
++ test->msi = ioremap(test->msi_addr, PCIE_MSI_OB_SIZE);
++ if (!test->msi)
++ dev_info(&ep->dev, "failed to map MSI outbound region\n");
++
++ test->msi_msg_addr = ioread32(pcie->dbi + PCIE_MSI_MSG_ADDR_OFF) |
++ (((u64)ioread32(pcie->dbi + PCIE_MSI_MSG_ADDR_OFF + 4)) << 32);
++ test->msi_msg_data = ioread16(pcie->dbi + PCIE_MSI_MSG_DATA_OFF);
++
++ ls_pcie_ep_dev_cfg_enable(ep);
++
++ /* outbound iATU for memory */
++ ls_pcie_iatu_outbound_set(pcie, 0, PCIE_ATU_TYPE_MEM,
++ test->out_addr, bus_addr, PCIE_BAR4_SIZE);
++ /* outbound iATU for MSI */
++ ls_pcie_iatu_outbound_set(pcie, 1, PCIE_ATU_TYPE_MEM,
++ test->msi_addr, test->msi_msg_addr,
++ PCIE_MSI_OB_SIZE);
++
++ /* ATU 0 : INBOUND : map BAR0 */
++ ls_pcie_iatu_inbound_set(pcie, 0, 0, test->cfg_addr);
++ /* ATU 2 : INBOUND : map BAR2 */
++ ls_pcie_iatu_inbound_set(pcie, 2, 2, test->cfg_addr);
++ /* ATU 3 : INBOUND : map BAR4 */
++ ls_pcie_iatu_inbound_set(pcie, 3, 4, test->buf_addr);
++
++ return 0;
++
++_err:
++ ls_pcie_ep_free_test(ep);
++ return err;
++}
++
++static int ls_pcie_ep_start_test(struct ls_ep_dev *ep, char *cmd)
++{
++ struct ls_ep_test *test = ep->driver_data;
++ enum test_type type;
++ enum test_dirt dirt;
++ u32 cnt, len, loop;
++ unsigned int data;
++ char dirt_str[2];
++ int ret;
++
++ if (strncmp(cmd, "dma", 3) == 0)
++ type = TEST_TYPE_DMA;
++ else
++ type = TEST_TYPE_MEMCPY;
++
++ cnt = sscanf(&cmd[4], "%1s %u %u %x", dirt_str, &len, &loop, &data);
++ if (cnt != 4) {
++ dev_info(&ep->dev, "format error %s", cmd);
++ dev_info(&ep->dev, "dma/cpy <r/w> <packet_size> <loop> <data>\n");
++ return -EINVAL;
++ }
++
++ if (strncmp(dirt_str, "r", 1) == 0)
++ dirt = TEST_DIRT_READ;
++ else
++ dirt = TEST_DIRT_WRITE;
++
++ if (len > PCIE_BAR4_SIZE) {
++ dev_err(&ep->dev, "max len is %d", PCIE_BAR4_SIZE);
++ return -EINVAL;
++ }
++
++ if (!test) {
++ dev_err(&ep->dev, "Please first run init command\n");
++ return -EINVAL;
++ }
++
++ if (ls_pcie_ep_test_try_run(test)) {
++ dev_err(&ep->dev, "There is already a test running\n");
++ return -EINVAL;
++ }
++
++ test->len = len;
++ test->loop = loop;
++ test->type = type;
++ test->data = (char)data;
++ test->dirt = dirt;
++ strcpy(test->cmd, cmd);
++ test->thread = kthread_run(ls_pcie_ep_test_thread, test,
++ "pcie ep test");
++ if (IS_ERR(test->thread)) {
++ dev_err(&ep->dev, "fork failed for pcie ep test\n");
++ ls_pcie_ep_test_done(test);
++ ret = PTR_ERR(test->thread);
++ }
++
++ return ret;
++}
++
++
++/**
++ * ls_pcie_reg_ops_read - read for regs data
++ * @filp: the opened file
++ * @buffer: where to write the data for the user to read
++ * @count: the size of the user's buffer
++ * @ppos: file position offset
++ **/
++static ssize_t ls_pcie_ep_dbg_regs_read(struct file *filp, char __user *buffer,
++ size_t count, loff_t *ppos)
++{
++ struct ls_ep_dev *ep = filp->private_data;
++ struct ls_pcie *pcie = ep->pcie;
++ char *buf;
++ int desc = 0, i, len;
++
++ buf = kmalloc(4 * 1024, GFP_KERNEL);
++ if (!buf)
++ return -ENOMEM;
++
++ ls_pcie_ep_dev_cfg_enable(ep);
++
++ desc += sprintf(buf + desc, "%s", "reg info:");
++ for (i = 0; i < 0x200; i += 4) {
++ if (i % 16 == 0)
++ desc += sprintf(buf + desc, "\n%08x:", i);
++ desc += sprintf(buf + desc, " %08x", readl(pcie->dbi + i));
++ }
++
++ desc += sprintf(buf + desc, "\n%s", "outbound iATU info:\n");
++ for (i = 0; i < 6; i++) {
++ writel(PCIE_ATU_REGION_OUTBOUND | i,
++ pcie->dbi + PCIE_ATU_VIEWPORT);
++ desc += sprintf(buf + desc, "iATU%d", i);
++ desc += sprintf(buf + desc, "\tLOWER PHYS 0x%08x\n",
++ readl(pcie->dbi + PCIE_ATU_LOWER_BASE));
++ desc += sprintf(buf + desc, "\tUPPER PHYS 0x%08x\n",
++ readl(pcie->dbi + PCIE_ATU_UPPER_BASE));
++ desc += sprintf(buf + desc, "\tLOWER BUS 0x%08x\n",
++ readl(pcie->dbi + PCIE_ATU_LOWER_TARGET));
++ desc += sprintf(buf + desc, "\tUPPER BUS 0x%08x\n",
++ readl(pcie->dbi + PCIE_ATU_UPPER_TARGET));
++ desc += sprintf(buf + desc, "\tLIMIT 0x%08x\n",
++ readl(pcie->dbi + PCIE_ATU_LIMIT));
++ desc += sprintf(buf + desc, "\tCR1 0x%08x\n",
++ readl(pcie->dbi + PCIE_ATU_CR1));
++ desc += sprintf(buf + desc, "\tCR2 0x%08x\n",
++ readl(pcie->dbi + PCIE_ATU_CR2));
++ }
++
++ desc += sprintf(buf + desc, "\n%s", "inbound iATU info:\n");
++ for (i = 0; i < 6; i++) {
++ writel(PCIE_ATU_REGION_INBOUND | i,
++ pcie->dbi + PCIE_ATU_VIEWPORT);
++ desc += sprintf(buf + desc, "iATU%d", i);
++ desc += sprintf(buf + desc, "\tLOWER BUS 0x%08x\n",
++ readl(pcie->dbi + PCIE_ATU_LOWER_BASE));
++ desc += sprintf(buf + desc, "\tUPPER BUSs 0x%08x\n",
++ readl(pcie->dbi + PCIE_ATU_UPPER_BASE));
++ desc += sprintf(buf + desc, "\tLOWER PHYS 0x%08x\n",
++ readl(pcie->dbi + PCIE_ATU_LOWER_TARGET));
++ desc += sprintf(buf + desc, "\tUPPER PHYS 0x%08x\n",
++ readl(pcie->dbi + PCIE_ATU_UPPER_TARGET));
++ desc += sprintf(buf + desc, "\tLIMIT 0x%08x\n",
++ readl(pcie->dbi + PCIE_ATU_LIMIT));
++ desc += sprintf(buf + desc, "\tCR1 0x%08x\n",
++ readl(pcie->dbi + PCIE_ATU_CR1));
++ desc += sprintf(buf + desc, "\tCR2 0x%08x\n",
++ readl(pcie->dbi + PCIE_ATU_CR2));
++ }
++
++ len = simple_read_from_buffer(buffer, count, ppos, buf, desc);
++ kfree(buf);
++
++ return len;
++}
++
++/**
++ * ls_pcie_ep_dbg_regs_write - write into regs datum
++ * @filp: the opened file
++ * @buffer: where to find the user's data
++ * @count: the length of the user's data
++ * @ppos: file position offset
++ **/
++static ssize_t ls_pcie_ep_dbg_regs_write(struct file *filp,
++ const char __user *buffer,
++ size_t count, loff_t *ppos)
++{
++ struct ls_ep_dev *ep = filp->private_data;
++ struct ls_pcie *pcie = ep->pcie;
++ char buf[256];
++
++ if (count >= sizeof(buf))
++ return -ENOSPC;
++
++ memset(buf, 0, sizeof(buf));
++
++ if (copy_from_user(buf, buffer, count))
++ return -EFAULT;
++
++ ls_pcie_ep_dev_cfg_enable(ep);
++
++ if (strncmp(buf, "reg", 3) == 0) {
++ u32 reg, value;
++ int cnt;
++
++ cnt = sscanf(&buf[3], "%x %x", &reg, &value);
++ if (cnt == 2) {
++ writel(value, pcie->dbi + reg);
++ value = readl(pcie->dbi + reg);
++ dev_info(&ep->dev, "reg 0x%08x: 0x%08x\n",
++ reg, value);
++ } else {
++ dev_info(&ep->dev, "reg <reg> <value>\n");
++ }
++ } else if (strncmp(buf, "atu", 3) == 0) {
++ /* to do */
++ dev_info(&ep->dev, " Not support atu command\n");
++ } else {
++ dev_info(&ep->dev, "Unknown command %s\n", buf);
++ dev_info(&ep->dev, "Available commands:\n");
++ dev_info(&ep->dev, " reg <reg> <value>\n");
++ }
++
++ return count;
++}
++
++static const struct file_operations ls_pcie_ep_dbg_regs_fops = {
++ .owner = THIS_MODULE,
++ .open = simple_open,
++ .read = ls_pcie_ep_dbg_regs_read,
++ .write = ls_pcie_ep_dbg_regs_write,
++};
++
++static ssize_t ls_pcie_ep_dbg_test_read(struct file *filp,
++ char __user *buffer,
++ size_t count, loff_t *ppos)
++{
++ struct ls_ep_dev *ep = filp->private_data;
++ struct ls_ep_test *test = ep->driver_data;
++ char buf[512];
++ int desc = 0, len;
++
++ if (!test) {
++ dev_info(&ep->dev, " there is NO test\n");
++ return 0;
++ }
++
++ if (test->status != TEST_IDLE) {
++ dev_info(&ep->dev, "test %s is running\n", test->cmd);
++ return 0;
++ }
++
++ desc = sprintf(buf, "MSI ADDR:0x%llx MSI DATA:0x%x\n",
++ test->msi_msg_addr, test->msi_msg_data);
++
++ desc += sprintf(buf + desc, "%s throughput:%lluMbps\n",
++ test->cmd, test->result);
++
++ len = simple_read_from_buffer(buffer, count, ppos,
++ buf, desc);
++
++ return len;
++}
++
++static ssize_t ls_pcie_ep_dbg_test_write(struct file *filp,
++ const char __user *buffer,
++ size_t count, loff_t *ppos)
++{
++ struct ls_ep_dev *ep = filp->private_data;
++ char buf[256];
++
++ if (count >= sizeof(buf))
++ return -ENOSPC;
++
++ memset(buf, 0, sizeof(buf));
++
++ if (copy_from_user(buf, buffer, count))
++ return -EFAULT;
++
++ if (strncmp(buf, "init", 4) == 0) {
++ int i = 4;
++ u64 bus_addr;
++
++ while (buf[i] == ' ')
++ i++;
++
++ if (kstrtou64(&buf[i], 0, &bus_addr))
++ dev_info(&ep->dev, "command: init <bus_addr>\n");
++ else {
++ if (ls_pcie_ep_init_test(ep, bus_addr))
++ dev_info(&ep->dev, "failed to init test\n");
++ }
++ } else if (strncmp(buf, "free", 4) == 0)
++ ls_pcie_ep_free_test(ep);
++ else if (strncmp(buf, "dma", 3) == 0 ||
++ strncmp(buf, "cpy", 3) == 0)
++ ls_pcie_ep_start_test(ep, buf);
++ else {
++ dev_info(&ep->dev, "Unknown command: %s\n", buf);
++ dev_info(&ep->dev, "Available commands:\n");
++ dev_info(&ep->dev, "\tinit <bus_addr>\n");
++ dev_info(&ep->dev, "\t<dma/cpy> <r/w> <packet_size> <loop>\n");
++ dev_info(&ep->dev, "\tfree\n");
++ }
++
++ return count;
++}
++
++static const struct file_operations ls_pcie_ep_dbg_test_fops = {
++ .owner = THIS_MODULE,
++ .open = simple_open,
++ .read = ls_pcie_ep_dbg_test_read,
++ .write = ls_pcie_ep_dbg_test_write,
++};
++
++static ssize_t ls_pcie_ep_dbg_dump_read(struct file *filp,
++ char __user *buffer,
++ size_t count, loff_t *ppos)
++{
++ struct ls_ep_dev *ep = filp->private_data;
++ struct ls_ep_test *test = ep->driver_data;
++ char *buf;
++ int desc = 0, i, len;
++
++ buf = kmalloc(4 * 1024, GFP_KERNEL);
++ if (!buf)
++ return -ENOMEM;
++
++ if (!test) {
++ dev_info(&ep->dev, " there is NO test\n");
++ kfree(buf);
++ return 0;
++ }
++
++ desc += sprintf(buf + desc, "%s", "dump info:");
++ for (i = 0; i < 256; i += 4) {
++ if (i % 16 == 0)
++ desc += sprintf(buf + desc, "\n%08x:", i);
++ desc += sprintf(buf + desc, " %08x", readl(test->buf + i));
++ }
++
++ desc += sprintf(buf + desc, "\n");
++ len = simple_read_from_buffer(buffer, count, ppos, buf, desc);
++
++ kfree(buf);
++
++ return len;
++}
++
++static const struct file_operations ls_pcie_ep_dbg_dump_fops = {
++ .owner = THIS_MODULE,
++ .open = simple_open,
++ .read = ls_pcie_ep_dbg_dump_read,
++};
++
++static int ls_pcie_ep_dev_dbgfs_init(struct ls_ep_dev *ep)
++{
++ struct ls_pcie *pcie = ep->pcie;
++ struct dentry *pfile;
++
++ ls_pcie_ep_dev_cfg_enable(ep);
++
++ ep->dir = debugfs_create_dir(dev_name(&ep->dev), pcie->dir);
++ if (!ep->dir)
++ return -ENOMEM;
++
++ pfile = debugfs_create_file("regs", 0600, ep->dir, ep,
++ &ls_pcie_ep_dbg_regs_fops);
++ if (!pfile)
++ dev_info(&ep->dev, "debugfs regs for failed\n");
++
++ pfile = debugfs_create_file("test", 0600, ep->dir, ep,
++ &ls_pcie_ep_dbg_test_fops);
++ if (!pfile)
++ dev_info(&ep->dev, "debugfs test for failed\n");
++
++ pfile = debugfs_create_file("dump", 0600, ep->dir, ep,
++ &ls_pcie_ep_dbg_dump_fops);
++ if (!pfile)
++ dev_info(&ep->dev, "debugfs dump for failed\n");
++
++ return 0;
++}
++
++int ls_pcie_ep_dbgfs_init(struct ls_pcie *pcie)
++{
++ struct ls_ep_dev *ep;
++
++ pcie->dir = debugfs_create_dir(dev_name(pcie->dev), NULL);
++ if (!pcie->dir)
++ return -ENOMEM;
++
++ list_for_each_entry(ep, &pcie->ep_list, node)
++ ls_pcie_ep_dev_dbgfs_init(ep);
++
++ return 0;
++}
++
++int ls_pcie_ep_dbgfs_remove(struct ls_pcie *pcie)
++{
++ debugfs_remove_recursive(pcie->dir);
++ return 0;
++}
++
++MODULE_AUTHOR("Minghuan Lian <Minghuan.Lian@freescale.com>");
++MODULE_DESCRIPTION("Freescale Layerscape PCIe EP controller driver");
++MODULE_LICENSE("GPL v2");
+diff --git a/drivers/pci/host/pci-layerscape-ep.c b/drivers/pci/host/pci-layerscape-ep.c
+new file mode 100644
+index 00000000..8f1cca6e
+--- /dev/null
++++ b/drivers/pci/host/pci-layerscape-ep.c
+@@ -0,0 +1,309 @@
++/*
++ * PCIe Endpoint driver for Freescale Layerscape SoCs
++ *
++ * Copyright (C) 2015 Freescale Semiconductor.
++ *
++ * Author: Minghuan Lian <Minghuan.Lian@freescale.com>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include <linux/kernel.h>
++#include <linux/delay.h>
++#include <linux/interrupt.h>
++#include <linux/module.h>
++#include <linux/of_pci.h>
++#include <linux/of_platform.h>
++#include <linux/of_irq.h>
++#include <linux/of_address.h>
++#include <linux/pci.h>
++#include <linux/platform_device.h>
++#include <linux/resource.h>
++#include <linux/debugfs.h>
++#include <linux/time.h>
++#include <linux/uaccess.h>
++
++#include "pci-layerscape-ep.h"
++
++struct ls_ep_dev *
++ls_pci_ep_find(struct ls_pcie *pcie, int dev_id)
++{
++ struct ls_ep_dev *ep;
++
++ list_for_each_entry(ep, &pcie->ep_list, node) {
++ if (ep->dev_id == dev_id)
++ return ep;
++ }
++
++ return NULL;
++}
++
++static void ls_pcie_try_cfg2(struct ls_pcie *pcie, int pf, int vf)
++{
++ if (pcie->sriov)
++ writel(PCIE_LCTRL0_VAL(pf, vf),
++ pcie->dbi + PCIE_LUT_BASE + PCIE_LUT_LCTRL0);
++}
++
++static bool ls_pcie_is_bridge(struct ls_pcie *pcie)
++{
++ u32 header_type = 0;
++
++ header_type = readl(pcie->dbi + (PCI_HEADER_TYPE & ~0x3));
++ header_type = (header_type >> 16) & 0x7f;
++
++ return header_type == PCI_HEADER_TYPE_BRIDGE;
++}
++
++void ls_pcie_iatu_outbound_set(struct ls_pcie *pcie, int idx, int type,
++ u64 cpu_addr, u64 pci_addr, u32 size)
++{
++ writel(PCIE_ATU_REGION_OUTBOUND | idx,
++ pcie->dbi + PCIE_ATU_VIEWPORT);
++ writel(lower_32_bits(cpu_addr),
++ pcie->dbi + PCIE_ATU_LOWER_BASE);
++ writel(upper_32_bits(cpu_addr),
++ pcie->dbi + PCIE_ATU_UPPER_BASE);
++ writel(lower_32_bits(cpu_addr + size - 1),
++ pcie->dbi + PCIE_ATU_LIMIT);
++ writel(lower_32_bits(pci_addr),
++ pcie->dbi + PCIE_ATU_LOWER_TARGET);
++ writel(upper_32_bits(pci_addr),
++ pcie->dbi + PCIE_ATU_UPPER_TARGET);
++ writel(type, pcie->dbi + PCIE_ATU_CR1);
++ writel(PCIE_ATU_ENABLE, pcie->dbi + PCIE_ATU_CR2);
++}
++
++/* Use bar match mode and MEM type as default */
++void ls_pcie_iatu_inbound_set(struct ls_pcie *pcie, int idx,
++ int bar, u64 phys)
++{
++ writel(PCIE_ATU_REGION_INBOUND | idx, pcie->dbi + PCIE_ATU_VIEWPORT);
++ writel((u32)phys, pcie->dbi + PCIE_ATU_LOWER_TARGET);
++ writel(phys >> 32, pcie->dbi + PCIE_ATU_UPPER_TARGET);
++ writel(PCIE_ATU_TYPE_MEM, pcie->dbi + PCIE_ATU_CR1);
++ writel(PCIE_ATU_ENABLE | PCIE_ATU_BAR_MODE_ENABLE |
++ PCIE_ATU_BAR_NUM(bar), pcie->dbi + PCIE_ATU_CR2);
++}
++
++void ls_pcie_ep_dev_cfg_enable(struct ls_ep_dev *ep)
++{
++ ls_pcie_try_cfg2(ep->pcie, ep->pf_idx, ep->vf_idx);
++}
++
++void ls_pcie_ep_setup_bar(void *bar_base, int bar, u32 size)
++{
++ if (size < 4 * 1024)
++ return;
++
++ switch (bar) {
++ case 0:
++ writel(size - 1, bar_base + PCI_BASE_ADDRESS_0);
++ break;
++ case 1:
++ writel(size - 1, bar_base + PCI_BASE_ADDRESS_1);
++ break;
++ case 2:
++ writel(size - 1, bar_base + PCI_BASE_ADDRESS_2);
++ writel(0, bar_base + PCI_BASE_ADDRESS_3);
++ break;
++ case 4:
++ writel(size - 1, bar_base + PCI_BASE_ADDRESS_4);
++ writel(0, bar_base + PCI_BASE_ADDRESS_5);
++ break;
++ default:
++ break;
++ }
++}
++
++void ls_pcie_ep_dev_setup_bar(struct ls_ep_dev *ep, int bar, u32 size)
++{
++ struct ls_pcie *pcie = ep->pcie;
++ void *bar_base;
++
++ if (size < 4 * 1024)
++ return;
++
++ if (pcie->sriov)
++ bar_base = pcie->dbi;
++ else
++ bar_base = pcie->dbi + PCIE_NO_SRIOV_BAR_BASE;
++
++ ls_pcie_ep_dev_cfg_enable(ep);
++ ls_pcie_ep_setup_bar(bar_base, bar, size);
++}
++
++static int ls_pcie_ep_dev_init(struct ls_pcie *pcie, int pf_idx, int vf_idx)
++{
++ struct ls_ep_dev *ep;
++
++ ep = devm_kzalloc(pcie->dev, sizeof(*ep), GFP_KERNEL);
++ if (!ep)
++ return -ENOMEM;
++
++ ep->pcie = pcie;
++ ep->pf_idx = pf_idx;
++ ep->vf_idx = vf_idx;
++ if (vf_idx)
++ ep->dev_id = pf_idx + 4 + 4 * (vf_idx - 1);
++ else
++ ep->dev_id = pf_idx;
++
++ if (ep->vf_idx)
++ dev_set_name(&ep->dev, "pf%d-vf%d",
++ ep->pf_idx,
++ ep->vf_idx);
++ else
++ dev_set_name(&ep->dev, "pf%d",
++ ep->pf_idx);
++
++ list_add_tail(&ep->node, &pcie->ep_list);
++
++ return 0;
++}
++
++static int ls_pcie_ep_init(struct ls_pcie *pcie)
++{
++ u32 sriov_header;
++ int pf, vf, i, j;
++
++ sriov_header = readl(pcie->dbi + PCIE_SRIOV_POS);
++
++ if (PCI_EXT_CAP_ID(sriov_header) == PCI_EXT_CAP_ID_SRIOV) {
++ pcie->sriov = PCIE_SRIOV_POS;
++ pf = PCIE_PF_NUM;
++ vf = PCIE_VF_NUM;
++ } else {
++ pcie->sriov = 0;
++ pf = 1;
++ vf = 0;
++ }
++
++ for (i = 0; i < pf; i++) {
++ for (j = 0; j <= vf; j++)
++ ls_pcie_ep_dev_init(pcie, i, j);
++ }
++
++ return 0;
++}
++
++static struct ls_pcie_ep_drvdata ls1043_drvdata = {
++ .lut_offset = 0x10000,
++ .ltssm_shift = 24,
++ .lut_dbg = 0x7fc,
++};
++
++static struct ls_pcie_ep_drvdata ls1046_drvdata = {
++ .lut_offset = 0x80000,
++ .ltssm_shift = 24,
++ .lut_dbg = 0x407fc,
++};
++
++static struct ls_pcie_ep_drvdata ls2080_drvdata = {
++ .lut_offset = 0x80000,
++ .ltssm_shift = 0,
++ .lut_dbg = 0x7fc,
++};
++
++static const struct of_device_id ls_pcie_ep_of_match[] = {
++ { .compatible = "fsl,ls1021a-pcie", },
++ { .compatible = "fsl,ls1043a-pcie", .data = &ls1043_drvdata },
++ { .compatible = "fsl,ls1046a-pcie", .data = &ls1046_drvdata },
++ { .compatible = "fsl,ls2080a-pcie", .data = &ls2080_drvdata },
++ { .compatible = "fsl,ls2085a-pcie", .data = &ls2080_drvdata },
++ { },
++};
++MODULE_DEVICE_TABLE(of, ls_pcie_ep_of_match);
++
++static int ls_pcie_ep_probe(struct platform_device *pdev)
++{
++ struct ls_pcie *pcie;
++ struct resource *dbi_base, *cfg_res;
++ const struct of_device_id *match;
++ int ret;
++
++ match = of_match_device(ls_pcie_ep_of_match, &pdev->dev);
++ if (!match)
++ return -ENODEV;
++
++ pcie = devm_kzalloc(&pdev->dev, sizeof(*pcie), GFP_KERNEL);
++ if (!pcie)
++ return -ENOMEM;
++
++ pcie->dev = &pdev->dev;
++ INIT_LIST_HEAD(&pcie->ep_list);
++
++ dbi_base = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs");
++ pcie->dbi = devm_ioremap_resource(&pdev->dev, dbi_base);
++ if (IS_ERR(pcie->dbi)) {
++ dev_err(&pdev->dev, "missing *regs* space\n");
++ return PTR_ERR(pcie->dbi);
++ }
++
++ pcie->drvdata = match->data;
++ pcie->lut = pcie->dbi + pcie->drvdata->lut_offset;
++
++ if (ls_pcie_is_bridge(pcie))
++ return -ENODEV;
++
++ dev_info(pcie->dev, "in EP mode\n");
++
++ cfg_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "config");
++ if (cfg_res)
++ pcie->out_base = cfg_res->start;
++ else {
++ dev_err(&pdev->dev, "missing *config* space\n");
++ return -ENODEV;
++ }
++
++ ret = ls_pcie_ep_init(pcie);
++ if (ret)
++ return ret;
++
++ ls_pcie_ep_dbgfs_init(pcie);
++
++ platform_set_drvdata(pdev, pcie);
++
++ return 0;
++}
++
++static int ls_pcie_ep_dev_remove(struct ls_ep_dev *ep)
++{
++ list_del(&ep->node);
++
++ return 0;
++}
++
++static int ls_pcie_ep_remove(struct platform_device *pdev)
++{
++ struct ls_pcie *pcie = platform_get_drvdata(pdev);
++ struct ls_ep_dev *ep, *tmp;
++
++ if (!pcie)
++ return 0;
++
++ ls_pcie_ep_dbgfs_remove(pcie);
++
++ list_for_each_entry_safe(ep, tmp, &pcie->ep_list, node)
++ ls_pcie_ep_dev_remove(ep);
++
++ return 0;
++}
++
++static struct platform_driver ls_pcie_ep_driver = {
++ .driver = {
++ .name = "ls-pcie-ep",
++ .owner = THIS_MODULE,
++ .of_match_table = ls_pcie_ep_of_match,
++ },
++ .probe = ls_pcie_ep_probe,
++ .remove = ls_pcie_ep_remove,
++};
++
++module_platform_driver(ls_pcie_ep_driver);
++
++MODULE_AUTHOR("Minghuan Lian <Minghuan.Lian@freescale.com>");
++MODULE_DESCRIPTION("Freescale Layerscape PCIe EP driver");
++MODULE_LICENSE("GPL v2");
+diff --git a/drivers/pci/host/pci-layerscape-ep.h b/drivers/pci/host/pci-layerscape-ep.h
+new file mode 100644
+index 00000000..990c0ff5
+--- /dev/null
++++ b/drivers/pci/host/pci-layerscape-ep.h
+@@ -0,0 +1,115 @@
++/*
++ * PCIe Endpoint driver for Freescale Layerscape SoCs
++ *
++ * Copyright (C) 2015 Freescale Semiconductor.
++ *
++ * Author: Minghuan Lian <Minghuan.Lian@freescale.com>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++
++#ifndef _PCIE_LAYERSCAPE_EP_H
++#define _PCIE_LAYERSCAPE_EP_H
++
++#include <linux/device.h>
++
++/* Synopsis specific PCIE configuration registers */
++#define PCIE_ATU_VIEWPORT 0x900
++#define PCIE_ATU_REGION_INBOUND (0x1 << 31)
++#define PCIE_ATU_REGION_OUTBOUND (0x0 << 31)
++#define PCIE_ATU_REGION_INDEX3 (0x3 << 0)
++#define PCIE_ATU_REGION_INDEX2 (0x2 << 0)
++#define PCIE_ATU_REGION_INDEX1 (0x1 << 0)
++#define PCIE_ATU_REGION_INDEX0 (0x0 << 0)
++#define PCIE_ATU_CR1 0x904
++#define PCIE_ATU_TYPE_MEM (0x0 << 0)
++#define PCIE_ATU_TYPE_IO (0x2 << 0)
++#define PCIE_ATU_TYPE_CFG0 (0x4 << 0)
++#define PCIE_ATU_TYPE_CFG1 (0x5 << 0)
++#define PCIE_ATU_CR2 0x908
++#define PCIE_ATU_ENABLE (0x1 << 31)
++#define PCIE_ATU_BAR_MODE_ENABLE (0x1 << 30)
++#define PCIE_ATU_LOWER_BASE 0x90C
++#define PCIE_ATU_UPPER_BASE 0x910
++#define PCIE_ATU_LIMIT 0x914
++#define PCIE_ATU_LOWER_TARGET 0x918
++#define PCIE_ATU_BUS(x) (((x) & 0xff) << 24)
++#define PCIE_ATU_DEV(x) (((x) & 0x1f) << 19)
++#define PCIE_ATU_FUNC(x) (((x) & 0x7) << 16)
++#define PCIE_ATU_UPPER_TARGET 0x91C
++
++/* PEX internal configuration registers */
++#define PCIE_DBI_RO_WR_EN 0x8bc /* DBI Read-Only Write Enable Register */
++
++/* PEX LUT registers */
++#define PCIE_LUT_BASE 0x80000
++#define PCIE_LUT_DBG 0x7FC /* PEX LUT Debug register */
++
++#define PCIE_LUT_LCTRL0 0x7F8
++
++#define PCIE_ATU_BAR_NUM(bar) ((bar) << 8)
++#define PCIE_LCTRL0_CFG2_ENABLE (1 << 31)
++#define PCIE_LCTRL0_VF(vf) ((vf) << 22)
++#define PCIE_LCTRL0_PF(pf) ((pf) << 16)
++#define PCIE_LCTRL0_VF_ACTIVE (1 << 21)
++#define PCIE_LCTRL0_VAL(pf, vf) (PCIE_LCTRL0_PF(pf) | \
++ PCIE_LCTRL0_VF(vf) | \
++ ((vf) == 0 ? 0 : PCIE_LCTRL0_VF_ACTIVE) | \
++ PCIE_LCTRL0_CFG2_ENABLE)
++
++#define PCIE_NO_SRIOV_BAR_BASE 0x1000
++
++#define PCIE_SRIOV_POS 0x178
++#define PCIE_PF_NUM 2
++#define PCIE_VF_NUM 64
++
++struct ls_pcie_ep_drvdata {
++ u32 lut_offset;
++ u32 ltssm_shift;
++ u32 lut_dbg;
++};
++
++struct ls_pcie {
++ struct list_head ep_list;
++ struct device *dev;
++ struct dentry *dir;
++ const struct ls_pcie_ep_drvdata *drvdata;
++ void __iomem *dbi;
++ void __iomem *lut;
++ phys_addr_t out_base;
++ int sriov;
++ int index;
++};
++
++struct ls_ep_dev {
++ struct list_head node;
++ struct ls_pcie *pcie;
++ struct device dev;
++ struct dentry *dir;
++ int pf_idx;
++ int vf_idx;
++ int dev_id;
++ void *driver_data;
++};
++
++struct ls_ep_dev *ls_pci_ep_find(struct ls_pcie *pcie, int dev_id);
++
++void ls_pcie_iatu_outbound_set(struct ls_pcie *pcie, int idx, int type,
++ u64 cpu_addr, u64 pci_addr, u32 size);
++
++/* Use bar match mode and MEM type as default */
++void ls_pcie_iatu_inbound_set(struct ls_pcie *pcie, int idx,
++ int bar, u64 phys);
++
++void ls_pcie_ep_dev_setup_bar(struct ls_ep_dev *ep, int bar, u32 size);
++
++
++void ls_pcie_ep_dev_cfg_enable(struct ls_ep_dev *ep);
++
++int ls_pcie_ep_dbgfs_init(struct ls_pcie *pcie);
++int ls_pcie_ep_dbgfs_remove(struct ls_pcie *pcie);
++
++#endif /* _PCIE_LAYERSCAPE_EP_H */
+diff --git a/drivers/pci/host/pci-layerscape.c b/drivers/pci/host/pci-layerscape.c
+index 65370799..4713b872 100644
+--- a/drivers/pci/host/pci-layerscape.c
++++ b/drivers/pci/host/pci-layerscape.c
+@@ -35,12 +35,14 @@
+ #define PCIE_STRFMR1 0x71c /* Symbol Timer & Filter Mask Register1 */
+ #define PCIE_DBI_RO_WR_EN 0x8bc /* DBI Read-Only Write Enable Register */
+
+-/* PEX LUT registers */
+-#define PCIE_LUT_DBG 0x7FC /* PEX LUT Debug Register */
++#define PCIE_IATU_NUM 6
++
++static void ls_pcie_host_init(struct pcie_port *pp);
+
+ struct ls_pcie_drvdata {
+ u32 lut_offset;
+ u32 ltssm_shift;
++ u32 lut_dbg;
+ struct pcie_host_ops *ops;
+ };
+
+@@ -86,6 +88,14 @@ static void ls_pcie_drop_msg_tlp(struct ls_pcie *pcie)
+ iowrite32(val, pcie->pp.dbi_base + PCIE_STRFMR1);
+ }
+
++static void ls_pcie_disable_outbound_atus(struct ls_pcie *pcie)
++{
++ int i;
++
++ for (i = 0; i < PCIE_IATU_NUM; i++)
++ dw_pcie_disable_outbound_atu(&pcie->pp, i);
++}
++
+ static int ls1021_pcie_link_up(struct pcie_port *pp)
+ {
+ u32 state;
+@@ -134,7 +144,7 @@ static int ls_pcie_link_up(struct pcie_port *pp)
+ struct ls_pcie *pcie = to_ls_pcie(pp);
+ u32 state;
+
+- state = (ioread32(pcie->lut + PCIE_LUT_DBG) >>
++ state = (ioread32(pcie->lut + pcie->drvdata->lut_dbg) >>
+ pcie->drvdata->ltssm_shift) &
+ LTSSM_STATE_MASK;
+
+@@ -153,6 +163,9 @@ static void ls_pcie_host_init(struct pcie_port *pp)
+ ls_pcie_clear_multifunction(pcie);
+ ls_pcie_drop_msg_tlp(pcie);
+ iowrite32(0, pcie->pp.dbi_base + PCIE_DBI_RO_WR_EN);
++
++ ls_pcie_disable_outbound_atus(pcie);
++ dw_pcie_setup_rc(pp);
+ }
+
+ static int ls_pcie_msi_host_init(struct pcie_port *pp,
+@@ -196,20 +209,38 @@ static struct ls_pcie_drvdata ls1021_drvdata = {
+ static struct ls_pcie_drvdata ls1043_drvdata = {
+ .lut_offset = 0x10000,
+ .ltssm_shift = 24,
++ .lut_dbg = 0x7fc,
++ .ops = &ls_pcie_host_ops,
++};
++
++static struct ls_pcie_drvdata ls1046_drvdata = {
++ .lut_offset = 0x80000,
++ .ltssm_shift = 24,
++ .lut_dbg = 0x407fc,
+ .ops = &ls_pcie_host_ops,
+ };
+
+ static struct ls_pcie_drvdata ls2080_drvdata = {
+ .lut_offset = 0x80000,
+ .ltssm_shift = 0,
++ .lut_dbg = 0x7fc,
++ .ops = &ls_pcie_host_ops,
++};
++
++static struct ls_pcie_drvdata ls2088_drvdata = {
++ .lut_offset = 0x80000,
++ .ltssm_shift = 0,
++ .lut_dbg = 0x407fc,
+ .ops = &ls_pcie_host_ops,
+ };
+
+ static const struct of_device_id ls_pcie_of_match[] = {
+ { .compatible = "fsl,ls1021a-pcie", .data = &ls1021_drvdata },
+ { .compatible = "fsl,ls1043a-pcie", .data = &ls1043_drvdata },
++ { .compatible = "fsl,ls1046a-pcie", .data = &ls1046_drvdata },
+ { .compatible = "fsl,ls2080a-pcie", .data = &ls2080_drvdata },
+ { .compatible = "fsl,ls2085a-pcie", .data = &ls2080_drvdata },
++ { .compatible = "fsl,ls2088a-pcie", .data = &ls2088_drvdata },
+ { },
+ };
+
+diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c
+index af8f6e92..2358e049 100644
+--- a/drivers/pci/host/pcie-designware.c
++++ b/drivers/pci/host/pcie-designware.c
+@@ -478,6 +478,12 @@ int dw_pcie_wait_for_link(struct pcie_port *pp)
+ return -ETIMEDOUT;
+ }
+
++void dw_pcie_disable_outbound_atu(struct pcie_port *pp, int index)
++{
++ dw_pcie_writel_rc(pp, PCIE_ATU_VIEWPORT, PCIE_ATU_REGION_OUTBOUND | index);
++ dw_pcie_writel_rc(pp, PCIE_ATU_CR2, 0);
++}
++
+ int dw_pcie_link_up(struct pcie_port *pp)
+ {
+ u32 val;
+diff --git a/drivers/pci/host/pcie-designware.h b/drivers/pci/host/pcie-designware.h
+index a567ea28..4e6672b2 100644
+--- a/drivers/pci/host/pcie-designware.h
++++ b/drivers/pci/host/pcie-designware.h
+@@ -82,5 +82,6 @@ int dw_pcie_wait_for_link(struct pcie_port *pp);
+ int dw_pcie_link_up(struct pcie_port *pp);
+ void dw_pcie_setup_rc(struct pcie_port *pp);
+ int dw_pcie_host_init(struct pcie_port *pp);
++void dw_pcie_disable_outbound_atu(struct pcie_port *pp, int index);
+
+ #endif /* _PCIE_DESIGNWARE_H */
+diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c
+index e9270b40..1bad877a 100644
+--- a/drivers/pci/pcie/portdrv_core.c
++++ b/drivers/pci/pcie/portdrv_core.c
+@@ -44,52 +44,30 @@ static void release_pcie_device(struct device *dev)
+ }
+
+ /**
+- * pcie_port_msix_add_entry - add entry to given array of MSI-X entries
+- * @entries: Array of MSI-X entries
+- * @new_entry: Index of the entry to add to the array
+- * @nr_entries: Number of entries already in the array
++ * 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
+ *
+- * Return value: Position of the added entry in the array
+ */
+-static int pcie_port_msix_add_entry(
+- struct msix_entry *entries, int new_entry, int nr_entries)
++int __weak pcibios_check_service_irqs(struct pci_dev *dev, int *irqs, int mask)
+ {
+- int j;
+-
+- for (j = 0; j < nr_entries; j++)
+- if (entries[j].entry == new_entry)
+- return j;
+-
+- entries[j].entry = new_entry;
+- return j;
++ return 0;
+ }
+
+ /**
+ * pcie_port_enable_msix - try to set up MSI-X as interrupt mode for given port
+ * @dev: PCI Express port to handle
+- * @vectors: Array of interrupt vectors to populate
++ * @irqs: Array of interrupt vectors to populate
+ * @mask: Bitmask of port capabilities returned by get_port_device_capability()
+ *
+ * Return value: 0 on success, error code on failure
+ */
+-static int pcie_port_enable_msix(struct pci_dev *dev, int *vectors, int mask)
++static int pcie_port_enable_msix(struct pci_dev *dev, int *irqs, int mask)
+ {
+- struct msix_entry *msix_entries;
+- int idx[PCIE_PORT_DEVICE_MAXSERVICES];
+- int nr_entries, status, pos, i, nvec;
+- u16 reg16;
+- u32 reg32;
+-
+- nr_entries = pci_msix_vec_count(dev);
+- if (nr_entries < 0)
+- return nr_entries;
+- BUG_ON(!nr_entries);
+- if (nr_entries > PCIE_PORT_MAX_MSIX_ENTRIES)
+- nr_entries = PCIE_PORT_MAX_MSIX_ENTRIES;
+-
+- msix_entries = kzalloc(sizeof(*msix_entries) * nr_entries, GFP_KERNEL);
+- if (!msix_entries)
+- return -ENOMEM;
++ int nr_entries, entry, nvec = 0;
+
+ /*
+ * Allocate as many entries as the port wants, so that we can check
+@@ -97,20 +75,13 @@ static int pcie_port_enable_msix(struct pci_dev *dev, int *vectors, int mask)
+ * equal to the number of entries this port actually uses, we'll happily
+ * go through without any tricks.
+ */
+- for (i = 0; i < nr_entries; i++)
+- msix_entries[i].entry = i;
+-
+- status = pci_enable_msix_exact(dev, msix_entries, nr_entries);
+- if (status)
+- goto Exit;
+-
+- for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++)
+- idx[i] = -1;
+- status = -EIO;
+- nvec = 0;
++ nr_entries = pci_alloc_irq_vectors(dev, 1, PCIE_PORT_MAX_MSIX_ENTRIES,
++ PCI_IRQ_MSIX);
++ if (nr_entries < 0)
++ return nr_entries;
+
+ if (mask & (PCIE_PORT_SERVICE_PME | PCIE_PORT_SERVICE_HP)) {
+- int entry;
++ u16 reg16;
+
+ /*
+ * The code below follows the PCI Express Base Specification 2.0
+@@ -125,18 +96,16 @@ static int pcie_port_enable_msix(struct pci_dev *dev, int *vectors, int mask)
+ pcie_capability_read_word(dev, PCI_EXP_FLAGS, &reg16);
+ entry = (reg16 & PCI_EXP_FLAGS_IRQ) >> 9;
+ if (entry >= nr_entries)
+- goto Error;
++ goto out_free_irqs;
+
+- i = pcie_port_msix_add_entry(msix_entries, entry, nvec);
+- if (i == nvec)
+- nvec++;
++ irqs[PCIE_PORT_SERVICE_PME_SHIFT] = pci_irq_vector(dev, entry);
++ irqs[PCIE_PORT_SERVICE_HP_SHIFT] = pci_irq_vector(dev, entry);
+
+- idx[PCIE_PORT_SERVICE_PME_SHIFT] = i;
+- idx[PCIE_PORT_SERVICE_HP_SHIFT] = i;
++ nvec = max(nvec, entry + 1);
+ }
+
+ if (mask & PCIE_PORT_SERVICE_AER) {
+- int entry;
++ u32 reg32, pos;
+
+ /*
+ * The code below follows Section 7.10.10 of the PCI Express
+@@ -151,13 +120,11 @@ static int pcie_port_enable_msix(struct pci_dev *dev, int *vectors, int mask)
+ pci_read_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, &reg32);
+ entry = reg32 >> 27;
+ if (entry >= nr_entries)
+- goto Error;
++ goto out_free_irqs;
+
+- i = pcie_port_msix_add_entry(msix_entries, entry, nvec);
+- if (i == nvec)
+- nvec++;
++ irqs[PCIE_PORT_SERVICE_AER_SHIFT] = pci_irq_vector(dev, entry);
+
+- idx[PCIE_PORT_SERVICE_AER_SHIFT] = i;
++ nvec = max(nvec, entry + 1);
+ }
+
+ /*
+@@ -165,41 +132,54 @@ static int pcie_port_enable_msix(struct pci_dev *dev, int *vectors, int mask)
+ * what we have. Otherwise, the port has some extra entries not for the
+ * services we know and we need to work around that.
+ */
+- if (nvec == nr_entries) {
+- status = 0;
+- } else {
++ if (nvec != nr_entries) {
+ /* Drop the temporary MSI-X setup */
+- pci_disable_msix(dev);
++ pci_free_irq_vectors(dev);
+
+ /* Now allocate the MSI-X vectors for real */
+- status = pci_enable_msix_exact(dev, msix_entries, nvec);
+- if (status)
+- goto Exit;
++ nr_entries = pci_alloc_irq_vectors(dev, nvec, nvec,
++ PCI_IRQ_MSIX);
++ if (nr_entries < 0)
++ return nr_entries;
+ }
+
+- for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++)
+- vectors[i] = idx[i] >= 0 ? msix_entries[idx[i]].vector : -1;
+-
+- Exit:
+- kfree(msix_entries);
+- return status;
++ return 0;
+
+- Error:
+- pci_disable_msix(dev);
+- goto Exit;
++out_free_irqs:
++ pci_free_irq_vectors(dev);
++ return -EIO;
+ }
+
+ /**
+- * init_service_irqs - initialize irqs for PCI Express port services
++ * pcie_init_service_irqs - initialize irqs for PCI Express port services
+ * @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: Interrupt mode associated with the port
+ */
+-static int init_service_irqs(struct pci_dev *dev, int *irqs, int mask)
++static int pcie_init_service_irqs(struct pci_dev *dev, int *irqs, int mask)
+ {
+- int i, irq = -1;
++ unsigned flags = PCI_IRQ_LEGACY | PCI_IRQ_MSI;
++ 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 && i != PCIE_PORT_SERVICE_VC_SHIFT)
++ irqs[i] = irq;
++ return 0;
++ }
+
+ /*
+ * If MSI cannot be used for PCIe PME or hotplug, we have to use
+@@ -207,41 +187,25 @@ static int init_service_irqs(struct pci_dev *dev, int *irqs, int mask)
+ */
+ if (((mask & PCIE_PORT_SERVICE_PME) && pcie_pme_no_msi()) ||
+ ((mask & PCIE_PORT_SERVICE_HP) && pciehp_no_msi())) {
+- if (dev->irq)
+- irq = dev->irq;
+- goto no_msi;
++ flags &= ~PCI_IRQ_MSI;
++ } else {
++ /* Try to use MSI-X if supported */
++ if (!pcie_port_enable_msix(dev, irqs, mask))
++ return 0;
+ }
+
+- /* Try to use MSI-X if supported */
+- if (!pcie_port_enable_msix(dev, irqs, mask))
+- return 0;
+-
+- /*
+- * We're not going to use MSI-X, so try MSI and fall back to INTx.
+- * If neither MSI/MSI-X nor INTx available, try other interrupt. On
+- * some platforms, root port doesn't support MSI/MSI-X/INTx in RC mode.
+- */
+- if (!pci_enable_msi(dev) || dev->irq)
+- irq = dev->irq;
++ ret = pci_alloc_irq_vectors(dev, 1, 1, flags);
++ if (ret < 0)
++ return -ENODEV;
+
+- no_msi:
+- for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++)
+- irqs[i] = irq;
+- irqs[PCIE_PORT_SERVICE_VC_SHIFT] = -1;
++ for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++) {
++ if (i != PCIE_PORT_SERVICE_VC_SHIFT)
++ irqs[i] = pci_irq_vector(dev, 0);
++ }
+
+- if (irq < 0)
+- return -ENODEV;
+ return 0;
+ }
+
+-static void cleanup_service_irqs(struct pci_dev *dev)
+-{
+- if (dev->msix_enabled)
+- pci_disable_msix(dev);
+- else if (dev->msi_enabled)
+- pci_disable_msi(dev);
+-}
+-
+ /**
+ * get_port_device_capability - discover capabilities of a PCI Express port
+ * @dev: PCI Express port to examine
+@@ -378,7 +342,7 @@ int pcie_port_device_register(struct pci_dev *dev)
+ * that can be used in the absence of irqs. Allow them to determine
+ * if that is to be used.
+ */
+- status = init_service_irqs(dev, irqs, capabilities);
++ status = pcie_init_service_irqs(dev, irqs, capabilities);
+ if (status) {
+ capabilities &= PCIE_PORT_SERVICE_VC | PCIE_PORT_SERVICE_HP;
+ if (!capabilities)
+@@ -401,7 +365,7 @@ int pcie_port_device_register(struct pci_dev *dev)
+ return 0;
+
+ error_cleanup_irqs:
+- cleanup_service_irqs(dev);
++ pci_free_irq_vectors(dev);
+ error_disable:
+ pci_disable_device(dev);
+ return status;
+@@ -469,7 +433,7 @@ static int remove_iter(struct device *dev, void *data)
+ void pcie_port_device_remove(struct pci_dev *dev)
+ {
+ device_for_each_child(&dev->dev, NULL, remove_iter);
+- cleanup_service_irqs(dev);
++ pci_free_irq_vectors(dev);
+ pci_disable_device(dev);
+ }
+
+@@ -499,7 +463,6 @@ static int pcie_port_probe_service(struct device *dev)
+ if (status)
+ return status;
+
+- dev_printk(KERN_DEBUG, dev, "service driver %s loaded\n", driver->name);
+ get_device(dev);
+ return 0;
+ }
+@@ -524,8 +487,6 @@ static int pcie_port_remove_service(struct device *dev)
+ pciedev = to_pcie_device(dev);
+ driver = to_service_driver(dev->driver);
+ if (driver && driver->remove) {
+- dev_printk(KERN_DEBUG, dev, "unloading service driver %s\n",
+- driver->name);
+ driver->remove(pciedev);
+ put_device(dev);
+ }
+diff --git a/include/linux/pci.h b/include/linux/pci.h
+index 1b711796..6738d816 100644
+--- a/include/linux/pci.h
++++ b/include/linux/pci.h
+@@ -1823,6 +1823,7 @@ void pcibios_release_device(struct pci_dev *dev);
+ void pcibios_penalize_isa_irq(int irq, int active);
+ int pcibios_alloc_irq(struct pci_dev *dev);
+ void pcibios_free_irq(struct pci_dev *dev);
++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;
+--
+2.14.1
+
generated by cgit v1.1 at 2024-07-06 08:59:12 +0000