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authorDave Jiang <dave.jiang@intel.com>2015-08-11 18:48:43 +0300
committerVinod Koul <vinod.koul@intel.com>2015-08-17 11:07:30 +0300
commitc0f28ce66ecfd9fa0ae662a2c7f3e68e537e77f4 (patch)
tree29b72d67fd006b880c44882fbe412204850657a9 /drivers/dma/ioat/pci.c
parent80b1973659949fbdcbfe9e086e2370313a9f1288 (diff)
downloadlinux-c0f28ce66ecfd9fa0ae662a2c7f3e68e537e77f4.tar.xz
dmaengine: ioatdma: move all the init routines
Moving all the init routines to init.c and fixup anything broken during the move. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Acked-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/ioat/pci.c')
-rw-r--r--drivers/dma/ioat/pci.c278
1 files changed, 0 insertions, 278 deletions
diff --git a/drivers/dma/ioat/pci.c b/drivers/dma/ioat/pci.c
deleted file mode 100644
index 0ee610224ecd..000000000000
--- a/drivers/dma/ioat/pci.c
+++ /dev/null
@@ -1,278 +0,0 @@
-/*
- * Intel I/OAT DMA Linux driver
- * Copyright(c) 2007 - 2009 Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * The full GNU General Public License is included in this distribution in
- * the file called "COPYING".
- *
- */
-
-/*
- * This driver supports an Intel I/OAT DMA engine, which does asynchronous
- * copy operations.
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/interrupt.h>
-#include <linux/dca.h>
-#include <linux/slab.h>
-#include <linux/acpi.h>
-#include "dma.h"
-#include "registers.h"
-#include "hw.h"
-
-MODULE_VERSION(IOAT_DMA_VERSION);
-MODULE_LICENSE("Dual BSD/GPL");
-MODULE_AUTHOR("Intel Corporation");
-
-static struct pci_device_id ioat_pci_tbl[] = {
- /* I/OAT v3 platforms */
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_TBG0) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_TBG1) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_TBG2) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_TBG3) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_TBG4) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_TBG5) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_TBG6) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_TBG7) },
-
- /* I/OAT v3.2 platforms */
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_JSF0) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_JSF1) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_JSF2) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_JSF3) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_JSF4) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_JSF5) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_JSF6) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_JSF7) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_JSF8) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_JSF9) },
-
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_SNB0) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_SNB1) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_SNB2) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_SNB3) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_SNB4) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_SNB5) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_SNB6) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_SNB7) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_SNB8) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_SNB9) },
-
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_IVB0) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_IVB1) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_IVB2) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_IVB3) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_IVB4) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_IVB5) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_IVB6) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_IVB7) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_IVB8) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_IVB9) },
-
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_HSW0) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_HSW1) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_HSW2) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_HSW3) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_HSW4) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_HSW5) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_HSW6) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_HSW7) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_HSW8) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_HSW9) },
-
- /* I/OAT v3.3 platforms */
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_BWD0) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_BWD1) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_BWD2) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_BWD3) },
-
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_BDXDE0) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_BDXDE1) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_BDXDE2) },
- { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_BDXDE3) },
-
- { 0, }
-};
-MODULE_DEVICE_TABLE(pci, ioat_pci_tbl);
-
-static int ioat_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id);
-static void ioat_remove(struct pci_dev *pdev);
-
-static int ioat_dca_enabled = 1;
-module_param(ioat_dca_enabled, int, 0644);
-MODULE_PARM_DESC(ioat_dca_enabled, "control support of dca service (default: 1)");
-
-struct kmem_cache *ioat_cache;
-struct kmem_cache *ioat3_sed_cache;
-
-#define DRV_NAME "ioatdma"
-
-static struct pci_driver ioat_pci_driver = {
- .name = DRV_NAME,
- .id_table = ioat_pci_tbl,
- .probe = ioat_pci_probe,
- .remove = ioat_remove,
-};
-
-static struct ioatdma_device *
-alloc_ioatdma(struct pci_dev *pdev, void __iomem *iobase)
-{
- struct device *dev = &pdev->dev;
- struct ioatdma_device *d = devm_kzalloc(dev, sizeof(*d), GFP_KERNEL);
-
- if (!d)
- return NULL;
- d->pdev = pdev;
- d->reg_base = iobase;
- return d;
-}
-
-/*
- * The dmaengine core assumes that async DMA devices will only be removed
- * when they not used anymore, or it assumes dma_async_device_unregister()
- * will only be called by dma driver exit routines. But this assumption is
- * not true for the IOAT driver, which calls dma_async_device_unregister()
- * from ioat_remove(). So current IOAT driver doesn't support device
- * hot-removal because it may cause system crash to hot-remove inuse IOAT
- * devices.
- *
- * This is a hack to disable IOAT devices under ejectable PCI host bridge
- * so it won't break PCI host bridge hot-removal.
- */
-static bool ioat_pci_has_ejectable_acpi_ancestor(struct pci_dev *pdev)
-{
-#ifdef CONFIG_ACPI
- struct pci_bus *bus = pdev->bus;
- struct acpi_device *adev;
-
- while (bus->parent)
- bus = bus->parent;
- for (adev = ACPI_COMPANION(bus->bridge); adev; adev = adev->parent)
- if (adev->flags.ejectable)
- return true;
-#endif
-
- return false;
-}
-
-static int ioat_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
-{
- void __iomem * const *iomap;
- struct device *dev = &pdev->dev;
- struct ioatdma_device *device;
- int err;
-
- if (ioat_pci_has_ejectable_acpi_ancestor(pdev)) {
- dev_dbg(&pdev->dev, "ignore ejectable IOAT device.\n");
- return -ENODEV;
- }
-
- err = pcim_enable_device(pdev);
- if (err)
- return err;
-
- err = pcim_iomap_regions(pdev, 1 << IOAT_MMIO_BAR, DRV_NAME);
- if (err)
- return err;
- iomap = pcim_iomap_table(pdev);
- if (!iomap)
- return -ENOMEM;
-
- err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
- if (err)
- err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
- if (err)
- return err;
-
- err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
- if (err)
- err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
- if (err)
- return err;
-
- device = alloc_ioatdma(pdev, iomap[IOAT_MMIO_BAR]);
- if (!device)
- return -ENOMEM;
- pci_set_master(pdev);
- pci_set_drvdata(pdev, device);
-
- device->version = readb(device->reg_base + IOAT_VER_OFFSET);
- if (device->version >= IOAT_VER_3_0)
- err = ioat3_dma_probe(device, ioat_dca_enabled);
- else
- return -ENODEV;
-
- if (err) {
- dev_err(dev, "Intel(R) I/OAT DMA Engine init failed\n");
- return -ENODEV;
- }
-
- return 0;
-}
-
-static void ioat_remove(struct pci_dev *pdev)
-{
- struct ioatdma_device *device = pci_get_drvdata(pdev);
-
- if (!device)
- return;
-
- dev_err(&pdev->dev, "Removing dma and dca services\n");
- if (device->dca) {
- unregister_dca_provider(device->dca, &pdev->dev);
- free_dca_provider(device->dca);
- device->dca = NULL;
- }
- ioat_dma_remove(device);
-}
-
-static int __init ioat_init_module(void)
-{
- int err = -ENOMEM;
-
- pr_info("%s: Intel(R) QuickData Technology Driver %s\n",
- DRV_NAME, IOAT_DMA_VERSION);
-
- ioat_cache = kmem_cache_create("ioat", sizeof(struct ioat_ring_ent),
- 0, SLAB_HWCACHE_ALIGN, NULL);
- if (!ioat_cache)
- return -ENOMEM;
-
- ioat3_sed_cache = KMEM_CACHE(ioat_sed_ent, 0);
- if (!ioat3_sed_cache)
- goto err_ioat_cache;
-
- err = pci_register_driver(&ioat_pci_driver);
- if (err)
- goto err_ioat3_cache;
-
- return 0;
-
- err_ioat3_cache:
- kmem_cache_destroy(ioat3_sed_cache);
-
- err_ioat_cache:
- kmem_cache_destroy(ioat_cache);
-
- return err;
-}
-module_init(ioat_init_module);
-
-static void __exit ioat_exit_module(void)
-{
- pci_unregister_driver(&ioat_pci_driver);
- kmem_cache_destroy(ioat_cache);
-}
-module_exit(ioat_exit_module);