ioat: move to drivers/dma/ioat/
When first created the ioat driver was the only inhabitant of
drivers/dma/. Now, it is the only multi-file (more than a .c and a .h)
driver in the directory. Moving it to an ioat/ subdirectory allows the
naming convention to be cleaned up, and allows for future splitting of
the source files by hardware version (v1, v2, and v3).
Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/drivers/dma/ioat/pci.c b/drivers/dma/ioat/pci.c
new file mode 100644
index 0000000..d7948bf
--- /dev/null
+++ b/drivers/dma/ioat/pci.c
@@ -0,0 +1,202 @@
+/*
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * 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 "dma.h"
+#include "registers.h"
+#include "hw.h"
+
+MODULE_VERSION(IOAT_DMA_VERSION);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Intel Corporation");
+
+static struct pci_device_id ioat_pci_tbl[] = {
+ /* I/OAT v1 platforms */
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT) },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_CNB) },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_SCNB) },
+ { PCI_DEVICE(PCI_VENDOR_ID_UNISYS, PCI_DEVICE_ID_UNISYS_DMA_DIRECTOR) },
+
+ /* I/OAT v2 platforms */
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_SNB) },
+
+ /* I/OAT v3 platforms */
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_TBG0) },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_TBG1) },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_TBG2) },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_TBG3) },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_TBG4) },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_TBG5) },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_TBG6) },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_TBG7) },
+ { 0, }
+};
+
+struct ioat_device {
+ struct pci_dev *pdev;
+ void __iomem *iobase;
+ struct ioatdma_device *dma;
+ struct dca_provider *dca;
+};
+
+static int __devinit ioat_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id);
+static void __devexit 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)");
+
+static struct pci_driver ioat_pci_driver = {
+ .name = "ioatdma",
+ .id_table = ioat_pci_tbl,
+ .probe = ioat_probe,
+ .remove = __devexit_p(ioat_remove),
+};
+
+static int __devinit ioat_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ void __iomem *iobase;
+ struct ioat_device *device;
+ unsigned long mmio_start, mmio_len;
+ int err;
+
+ err = pci_enable_device(pdev);
+ if (err)
+ goto err_enable_device;
+
+ err = pci_request_regions(pdev, ioat_pci_driver.name);
+ if (err)
+ goto err_request_regions;
+
+ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
+ if (err)
+ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (err)
+ goto err_set_dma_mask;
+
+ 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)
+ goto err_set_dma_mask;
+
+ mmio_start = pci_resource_start(pdev, 0);
+ mmio_len = pci_resource_len(pdev, 0);
+ iobase = ioremap(mmio_start, mmio_len);
+ if (!iobase) {
+ err = -ENOMEM;
+ goto err_ioremap;
+ }
+
+ device = kzalloc(sizeof(*device), GFP_KERNEL);
+ if (!device) {
+ err = -ENOMEM;
+ goto err_kzalloc;
+ }
+ device->pdev = pdev;
+ pci_set_drvdata(pdev, device);
+ device->iobase = iobase;
+
+ pci_set_master(pdev);
+
+ switch (readb(iobase + IOAT_VER_OFFSET)) {
+ case IOAT_VER_1_2:
+ device->dma = ioat_dma_probe(pdev, iobase);
+ if (device->dma && ioat_dca_enabled)
+ device->dca = ioat_dca_init(pdev, iobase);
+ break;
+ case IOAT_VER_2_0:
+ device->dma = ioat_dma_probe(pdev, iobase);
+ if (device->dma && ioat_dca_enabled)
+ device->dca = ioat2_dca_init(pdev, iobase);
+ break;
+ case IOAT_VER_3_0:
+ device->dma = ioat_dma_probe(pdev, iobase);
+ if (device->dma && ioat_dca_enabled)
+ device->dca = ioat3_dca_init(pdev, iobase);
+ break;
+ default:
+ err = -ENODEV;
+ break;
+ }
+ if (!device->dma)
+ err = -ENODEV;
+
+ if (err)
+ goto err_version;
+
+ return 0;
+
+err_version:
+ kfree(device);
+err_kzalloc:
+ iounmap(iobase);
+err_ioremap:
+err_set_dma_mask:
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+err_request_regions:
+err_enable_device:
+ return err;
+}
+
+static void __devexit ioat_remove(struct pci_dev *pdev)
+{
+ struct ioat_device *device = pci_get_drvdata(pdev);
+
+ dev_err(&pdev->dev, "Removing dma and dca services\n");
+ if (device->dca) {
+ unregister_dca_provider(device->dca);
+ free_dca_provider(device->dca);
+ device->dca = NULL;
+ }
+
+ if (device->dma) {
+ ioat_dma_remove(device->dma);
+ device->dma = NULL;
+ }
+
+ kfree(device);
+}
+
+static int __init ioat_init_module(void)
+{
+ return pci_register_driver(&ioat_pci_driver);
+}
+module_init(ioat_init_module);
+
+static void __exit ioat_exit_module(void)
+{
+ pci_unregister_driver(&ioat_pci_driver);
+}
+module_exit(ioat_exit_module);