diff options
Diffstat (limited to 'target/linux/bcm53xx/patches-4.1/031-PCI-iproc-Add-BCMA-PCIe-driver.patch')
| -rw-r--r-- | target/linux/bcm53xx/patches-4.1/031-PCI-iproc-Add-BCMA-PCIe-driver.patch | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/target/linux/bcm53xx/patches-4.1/031-PCI-iproc-Add-BCMA-PCIe-driver.patch b/target/linux/bcm53xx/patches-4.1/031-PCI-iproc-Add-BCMA-PCIe-driver.patch new file mode 100644 index 0000000..a850baf --- /dev/null +++ b/target/linux/bcm53xx/patches-4.1/031-PCI-iproc-Add-BCMA-PCIe-driver.patch @@ -0,0 +1,177 @@ +From 4785ffbdc9b52e308e43b9e2dcc1dca44f056d76 Mon Sep 17 00:00:00 2001 +From: Hauke Mehrtens <hauke@hauke-m.de> +Date: Tue, 12 May 2015 23:23:01 +0200 +Subject: [PATCH 2/2] PCI: iproc: Add BCMA PCIe driver +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +This driver adds support for the PCIe 2.0 controller found on the BCMA bus. +This controller can be found on (mostly) all Broadcom BCM470X / BCM5301X +ARM SoCs. + +The driver found in the Broadcom SDK does some more stuff, like setting up +some DMA memory areas, chaining MPS and MRRS to 512 and also some PHY +changes like "improving" the PCIe jitter and doing some special +initialization for the 3rd PCIe port. + +This was tested on a bcm4708 board with 2 PCIe ports and wireless cards +connected to them. + +PCI_DOMAINS is needed by this driver, because normally there is more than +one PCIe controller and without PCI_DOMAINS only the first controller gets +registered. This controller gets 6 IRQs; the last one is trigged by all +IRQ events. + +[bhelgaas: fix "GPLv2" MODULE_LICENSE typo] +Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> +Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> +Acked-by: Rafał Miłecki <zajec5@gmail.com> +Acked-by: Ray Jui <rjui@broadcom.com.com> +--- + drivers/pci/host/Kconfig | 11 ++++ + drivers/pci/host/Makefile | 1 + + drivers/pci/host/pcie-iproc-bcma.c | 112 +++++++++++++++++++++++++++++++++++++ + 3 files changed, 124 insertions(+) + create mode 100644 drivers/pci/host/pcie-iproc-bcma.c + +--- a/drivers/pci/host/Kconfig ++++ b/drivers/pci/host/Kconfig +@@ -125,4 +125,15 @@ config PCIE_IPROC_PLATFORM + Say Y here if you want to use the Broadcom iProc PCIe controller + through the generic platform bus interface + ++config PCIE_IPROC_BCMA ++ bool "Broadcom iProc PCIe BCMA bus driver" ++ depends on ARCH_BCM_IPROC || (ARM && COMPILE_TEST) ++ select PCIE_IPROC ++ select BCMA ++ select PCI_DOMAINS ++ default ARCH_BCM_5301X ++ help ++ Say Y here if you want to use the Broadcom iProc PCIe controller ++ through the BCMA bus interface ++ + endmenu +--- a/drivers/pci/host/Makefile ++++ b/drivers/pci/host/Makefile +@@ -15,3 +15,4 @@ obj-$(CONFIG_PCI_LAYERSCAPE) += pci-laye + obj-$(CONFIG_PCI_VERSATILE) += pci-versatile.o + obj-$(CONFIG_PCIE_IPROC) += pcie-iproc.o + obj-$(CONFIG_PCIE_IPROC_PLATFORM) += pcie-iproc-platform.o ++obj-$(CONFIG_PCIE_IPROC_BCMA) += pcie-iproc-bcma.o +--- /dev/null ++++ b/drivers/pci/host/pcie-iproc-bcma.c +@@ -0,0 +1,112 @@ ++/* ++ * Copyright (C) 2015 Broadcom Corporation ++ * Copyright (C) 2015 Hauke Mehrtens <hauke@hauke-m.de> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License as ++ * published by the Free Software Foundation version 2. ++ * ++ * This program is distributed "as is" WITHOUT ANY WARRANTY of any ++ * kind, whether express or implied; without even the implied warranty ++ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#include <linux/kernel.h> ++#include <linux/pci.h> ++#include <linux/module.h> ++#include <linux/slab.h> ++#include <linux/phy/phy.h> ++#include <linux/bcma/bcma.h> ++#include <linux/ioport.h> ++ ++#include "pcie-iproc.h" ++ ++ ++/* NS: CLASS field is R/O, and set to wrong 0x200 value */ ++static void bcma_pcie2_fixup_class(struct pci_dev *dev) ++{ ++ dev->class = PCI_CLASS_BRIDGE_PCI << 8; ++} ++DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x8011, bcma_pcie2_fixup_class); ++DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x8012, bcma_pcie2_fixup_class); ++ ++static int iproc_pcie_bcma_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) ++{ ++ struct pci_sys_data *sys = dev->sysdata; ++ struct iproc_pcie *pcie = sys->private_data; ++ struct bcma_device *bdev = container_of(pcie->dev, struct bcma_device, dev); ++ ++ return bcma_core_irq(bdev, 5); ++} ++ ++static int iproc_pcie_bcma_probe(struct bcma_device *bdev) ++{ ++ struct iproc_pcie *pcie; ++ LIST_HEAD(res); ++ struct resource res_mem; ++ int ret; ++ ++ pcie = devm_kzalloc(&bdev->dev, sizeof(*pcie), GFP_KERNEL); ++ if (!pcie) ++ return -ENOMEM; ++ ++ pcie->dev = &bdev->dev; ++ bcma_set_drvdata(bdev, pcie); ++ ++ pcie->base = bdev->io_addr; ++ ++ res_mem.start = bdev->addr_s[0]; ++ res_mem.end = bdev->addr_s[0] + SZ_128M - 1; ++ res_mem.name = "PCIe MEM space"; ++ res_mem.flags = IORESOURCE_MEM; ++ pci_add_resource(&res, &res_mem); ++ ++ pcie->resources = &res; ++ ++ pcie->map_irq = iproc_pcie_bcma_map_irq; ++ ++ ret = iproc_pcie_setup(pcie); ++ if (ret) { ++ dev_err(pcie->dev, "PCIe controller setup failed\n"); ++ return ret; ++ } ++ ++ return 0; ++} ++ ++static void iproc_pcie_bcma_remove(struct bcma_device *bdev) ++{ ++ struct iproc_pcie *pcie = bcma_get_drvdata(bdev); ++ ++ iproc_pcie_remove(pcie); ++} ++ ++static const struct bcma_device_id iproc_pcie_bcma_table[] = { ++ BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_PCIEG2, BCMA_ANY_REV, BCMA_ANY_CLASS), ++ {}, ++}; ++MODULE_DEVICE_TABLE(bcma, iproc_pcie_bcma_table); ++ ++static struct bcma_driver iproc_pcie_bcma_driver = { ++ .name = KBUILD_MODNAME, ++ .id_table = iproc_pcie_bcma_table, ++ .probe = iproc_pcie_bcma_probe, ++ .remove = iproc_pcie_bcma_remove, ++}; ++ ++static int __init iproc_pcie_bcma_init(void) ++{ ++ return bcma_driver_register(&iproc_pcie_bcma_driver); ++} ++module_init(iproc_pcie_bcma_init); ++ ++static void __exit iproc_pcie_bcma_exit(void) ++{ ++ bcma_driver_unregister(&iproc_pcie_bcma_driver); ++} ++module_exit(iproc_pcie_bcma_exit); ++ ++MODULE_AUTHOR("Hauke Mehrtens"); ++MODULE_DESCRIPTION("Broadcom iProc PCIe BCMA driver"); ++MODULE_LICENSE("GPL v2"); |