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misc: mic: Remove MIC X100 card virtio functionality
This patch deletes the virtio functionality from the MIC X100 card driver. A subsequent patch will re-enable this functionality by consolidating the hardware independent logic in a new Virtio over PCIe (VOP) driver. Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sudeep Dutt
Greg Kroah-Hartman
parent
ef39830c35
commit
b73c295833
@ -8,4 +8,3 @@ obj-$(CONFIG_INTEL_MIC_CARD) += mic_card.o
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mic_card-y += mic_x100.o
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mic_card-y += mic_device.o
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mic_card-y += mic_debugfs.o
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mic_card-y += mic_virtio.o
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@ -34,7 +34,6 @@
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#include <linux/mic_common.h>
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#include "../common/mic_dev.h"
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#include "mic_device.h"
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#include "mic_virtio.h"
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static struct mic_driver *g_drv;
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@ -309,9 +308,6 @@ int __init mic_driver_init(struct mic_driver *mdrv)
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rc = -ENODEV;
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goto irq_uninit;
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}
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rc = mic_devices_init(mdrv);
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if (rc)
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goto dma_free;
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bootparam = mdrv->dp;
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node_id = ioread8(&bootparam->node_id);
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mdrv->scdev = scif_register_device(mdrv->dev, MIC_SCIF_DEV,
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@ -321,13 +317,11 @@ int __init mic_driver_init(struct mic_driver *mdrv)
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mdrv->num_dma_ch, true);
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if (IS_ERR(mdrv->scdev)) {
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rc = PTR_ERR(mdrv->scdev);
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goto device_uninit;
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goto dma_free;
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}
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mic_create_card_debug_dir(mdrv);
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done:
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return rc;
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device_uninit:
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mic_devices_uninit(mdrv);
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dma_free:
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mic_free_dma_chans(mdrv);
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irq_uninit:
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@ -348,7 +342,6 @@ void mic_driver_uninit(struct mic_driver *mdrv)
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{
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mic_delete_card_debug_dir(mdrv);
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scif_unregister_device(mdrv->scdev);
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mic_devices_uninit(mdrv);
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mic_free_dma_chans(mdrv);
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mic_uninit_irq();
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mic_dp_uninit();
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@ -1,634 +0,0 @@
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/*
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* Intel MIC Platform Software Stack (MPSS)
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*
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* Copyright(c) 2013 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2, as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* The full GNU General Public License is included in this distribution in
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* the file called "COPYING".
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*
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* Disclaimer: The codes contained in these modules may be specific to
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* the Intel Software Development Platform codenamed: Knights Ferry, and
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* the Intel product codenamed: Knights Corner, and are not backward
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* compatible with other Intel products. Additionally, Intel will NOT
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* support the codes or instruction set in future products.
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*
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* Adapted from:
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*
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* virtio for kvm on s390
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*
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* Copyright IBM Corp. 2008
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License (version 2 only)
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* as published by the Free Software Foundation.
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*
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* Author(s): Christian Borntraeger <borntraeger@de.ibm.com>
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*
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* Intel MIC Card driver.
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*
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*/
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <linux/virtio_config.h>
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#include "../common/mic_dev.h"
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#include "mic_virtio.h"
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#define VIRTIO_SUBCODE_64 0x0D00
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#define MIC_MAX_VRINGS 4
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struct mic_vdev {
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struct virtio_device vdev;
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struct mic_device_desc __iomem *desc;
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struct mic_device_ctrl __iomem *dc;
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struct mic_device *mdev;
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void __iomem *vr[MIC_MAX_VRINGS];
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int used_size[MIC_MAX_VRINGS];
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struct completion reset_done;
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struct mic_irq *virtio_cookie;
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int c2h_vdev_db;
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};
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static struct mic_irq *virtio_config_cookie;
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#define to_micvdev(vd) container_of(vd, struct mic_vdev, vdev)
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/* Helper API to obtain the parent of the virtio device */
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static inline struct device *mic_dev(struct mic_vdev *mvdev)
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{
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return mvdev->vdev.dev.parent;
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}
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/* This gets the device's feature bits. */
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static u64 mic_get_features(struct virtio_device *vdev)
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{
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unsigned int i, bits;
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u32 features = 0;
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struct mic_device_desc __iomem *desc = to_micvdev(vdev)->desc;
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u8 __iomem *in_features = mic_vq_features(desc);
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int feature_len = ioread8(&desc->feature_len);
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bits = min_t(unsigned, feature_len, sizeof(features)) * 8;
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for (i = 0; i < bits; i++)
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if (ioread8(&in_features[i / 8]) & (BIT(i % 8)))
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features |= BIT(i);
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return features;
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}
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static int mic_finalize_features(struct virtio_device *vdev)
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{
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unsigned int i, bits;
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struct mic_device_desc __iomem *desc = to_micvdev(vdev)->desc;
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u8 feature_len = ioread8(&desc->feature_len);
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/* Second half of bitmap is features we accept. */
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u8 __iomem *out_features =
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mic_vq_features(desc) + feature_len;
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/* Give virtio_ring a chance to accept features. */
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vring_transport_features(vdev);
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/* Make sure we don't have any features > 32 bits! */
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BUG_ON((u32)vdev->features != vdev->features);
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memset_io(out_features, 0, feature_len);
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bits = min_t(unsigned, feature_len,
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sizeof(vdev->features)) * 8;
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for (i = 0; i < bits; i++) {
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if (__virtio_test_bit(vdev, i))
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iowrite8(ioread8(&out_features[i / 8]) | (1 << (i % 8)),
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&out_features[i / 8]);
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}
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return 0;
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}
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/*
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* Reading and writing elements in config space
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*/
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static void mic_get(struct virtio_device *vdev, unsigned int offset,
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void *buf, unsigned len)
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{
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struct mic_device_desc __iomem *desc = to_micvdev(vdev)->desc;
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if (offset + len > ioread8(&desc->config_len))
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return;
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memcpy_fromio(buf, mic_vq_configspace(desc) + offset, len);
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}
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static void mic_set(struct virtio_device *vdev, unsigned int offset,
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const void *buf, unsigned len)
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{
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struct mic_device_desc __iomem *desc = to_micvdev(vdev)->desc;
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if (offset + len > ioread8(&desc->config_len))
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return;
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memcpy_toio(mic_vq_configspace(desc) + offset, buf, len);
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}
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/*
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* The operations to get and set the status word just access the status
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* field of the device descriptor. set_status also interrupts the host
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* to tell about status changes.
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*/
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static u8 mic_get_status(struct virtio_device *vdev)
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{
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return ioread8(&to_micvdev(vdev)->desc->status);
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}
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static void mic_set_status(struct virtio_device *vdev, u8 status)
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{
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struct mic_vdev *mvdev = to_micvdev(vdev);
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if (!status)
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return;
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iowrite8(status, &mvdev->desc->status);
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mic_send_intr(mvdev->mdev, mvdev->c2h_vdev_db);
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}
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/* Inform host on a virtio device reset and wait for ack from host */
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static void mic_reset_inform_host(struct virtio_device *vdev)
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{
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struct mic_vdev *mvdev = to_micvdev(vdev);
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struct mic_device_ctrl __iomem *dc = mvdev->dc;
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int retry;
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iowrite8(0, &dc->host_ack);
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iowrite8(1, &dc->vdev_reset);
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mic_send_intr(mvdev->mdev, mvdev->c2h_vdev_db);
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/* Wait till host completes all card accesses and acks the reset */
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for (retry = 100; retry--;) {
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if (ioread8(&dc->host_ack))
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break;
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msleep(100);
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};
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dev_dbg(mic_dev(mvdev), "%s: retry: %d\n", __func__, retry);
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/* Reset status to 0 in case we timed out */
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iowrite8(0, &mvdev->desc->status);
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}
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static void mic_reset(struct virtio_device *vdev)
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{
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struct mic_vdev *mvdev = to_micvdev(vdev);
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dev_dbg(mic_dev(mvdev), "%s: virtio id %d\n",
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__func__, vdev->id.device);
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mic_reset_inform_host(vdev);
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complete_all(&mvdev->reset_done);
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}
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/*
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* The virtio_ring code calls this API when it wants to notify the Host.
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*/
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static bool mic_notify(struct virtqueue *vq)
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{
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struct mic_vdev *mvdev = vq->priv;
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mic_send_intr(mvdev->mdev, mvdev->c2h_vdev_db);
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return true;
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}
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static void mic_del_vq(struct virtqueue *vq, int n)
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{
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struct mic_vdev *mvdev = to_micvdev(vq->vdev);
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struct vring *vr = (struct vring *)(vq + 1);
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free_pages((unsigned long) vr->used, get_order(mvdev->used_size[n]));
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vring_del_virtqueue(vq);
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mic_card_unmap(mvdev->mdev, mvdev->vr[n]);
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mvdev->vr[n] = NULL;
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}
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static void mic_del_vqs(struct virtio_device *vdev)
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{
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struct mic_vdev *mvdev = to_micvdev(vdev);
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struct virtqueue *vq, *n;
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int idx = 0;
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dev_dbg(mic_dev(mvdev), "%s\n", __func__);
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list_for_each_entry_safe(vq, n, &vdev->vqs, list)
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mic_del_vq(vq, idx++);
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}
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/*
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* This routine will assign vring's allocated in host/io memory. Code in
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* virtio_ring.c however continues to access this io memory as if it were local
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* memory without io accessors.
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*/
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static struct virtqueue *mic_find_vq(struct virtio_device *vdev,
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unsigned index,
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void (*callback)(struct virtqueue *vq),
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const char *name)
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{
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struct mic_vdev *mvdev = to_micvdev(vdev);
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struct mic_vqconfig __iomem *vqconfig;
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struct mic_vqconfig config;
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struct virtqueue *vq;
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void __iomem *va;
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struct _mic_vring_info __iomem *info;
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void *used;
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int vr_size, _vr_size, err, magic;
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struct vring *vr;
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u8 type = ioread8(&mvdev->desc->type);
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if (index >= ioread8(&mvdev->desc->num_vq))
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return ERR_PTR(-ENOENT);
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if (!name)
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return ERR_PTR(-ENOENT);
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/* First assign the vring's allocated in host memory */
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vqconfig = mic_vq_config(mvdev->desc) + index;
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memcpy_fromio(&config, vqconfig, sizeof(config));
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_vr_size = vring_size(le16_to_cpu(config.num), MIC_VIRTIO_RING_ALIGN);
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vr_size = PAGE_ALIGN(_vr_size + sizeof(struct _mic_vring_info));
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va = mic_card_map(mvdev->mdev, le64_to_cpu(config.address), vr_size);
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if (!va)
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return ERR_PTR(-ENOMEM);
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mvdev->vr[index] = va;
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memset_io(va, 0x0, _vr_size);
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vq = vring_new_virtqueue(index, le16_to_cpu(config.num),
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MIC_VIRTIO_RING_ALIGN, vdev, false,
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(void __force *)va, mic_notify, callback,
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name);
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if (!vq) {
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err = -ENOMEM;
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goto unmap;
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}
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info = va + _vr_size;
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magic = ioread32(&info->magic);
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if (WARN(magic != MIC_MAGIC + type + index, "magic mismatch")) {
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err = -EIO;
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goto unmap;
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}
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/* Allocate and reassign used ring now */
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mvdev->used_size[index] = PAGE_ALIGN(sizeof(__u16) * 3 +
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sizeof(struct vring_used_elem) *
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le16_to_cpu(config.num));
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used = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
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get_order(mvdev->used_size[index]));
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if (!used) {
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err = -ENOMEM;
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dev_err(mic_dev(mvdev), "%s %d err %d\n",
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__func__, __LINE__, err);
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goto del_vq;
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}
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iowrite64(virt_to_phys(used), &vqconfig->used_address);
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/*
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* To reassign the used ring here we are directly accessing
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* struct vring_virtqueue which is a private data structure
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* in virtio_ring.c. At the minimum, a BUILD_BUG_ON() in
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* vring_new_virtqueue() would ensure that
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* (&vq->vring == (struct vring *) (&vq->vq + 1));
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*/
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vr = (struct vring *)(vq + 1);
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vr->used = used;
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vq->priv = mvdev;
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return vq;
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del_vq:
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vring_del_virtqueue(vq);
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unmap:
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mic_card_unmap(mvdev->mdev, mvdev->vr[index]);
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return ERR_PTR(err);
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}
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static int mic_find_vqs(struct virtio_device *vdev, unsigned nvqs,
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struct virtqueue *vqs[],
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vq_callback_t *callbacks[],
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const char * const names[])
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{
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struct mic_vdev *mvdev = to_micvdev(vdev);
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struct mic_device_ctrl __iomem *dc = mvdev->dc;
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int i, err, retry;
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/* We must have this many virtqueues. */
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if (nvqs > ioread8(&mvdev->desc->num_vq))
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return -ENOENT;
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for (i = 0; i < nvqs; ++i) {
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dev_dbg(mic_dev(mvdev), "%s: %d: %s\n",
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__func__, i, names[i]);
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vqs[i] = mic_find_vq(vdev, i, callbacks[i], names[i]);
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if (IS_ERR(vqs[i])) {
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err = PTR_ERR(vqs[i]);
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goto error;
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}
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}
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iowrite8(1, &dc->used_address_updated);
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/*
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* Send an interrupt to the host to inform it that used
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* rings have been re-assigned.
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*/
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mic_send_intr(mvdev->mdev, mvdev->c2h_vdev_db);
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for (retry = 100; --retry;) {
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if (!ioread8(&dc->used_address_updated))
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break;
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msleep(100);
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};
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dev_dbg(mic_dev(mvdev), "%s: retry: %d\n", __func__, retry);
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if (!retry) {
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err = -ENODEV;
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goto error;
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}
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return 0;
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error:
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mic_del_vqs(vdev);
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return err;
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}
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/*
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* The config ops structure as defined by virtio config
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*/
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static struct virtio_config_ops mic_vq_config_ops = {
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.get_features = mic_get_features,
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.finalize_features = mic_finalize_features,
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.get = mic_get,
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.set = mic_set,
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.get_status = mic_get_status,
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.set_status = mic_set_status,
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.reset = mic_reset,
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.find_vqs = mic_find_vqs,
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.del_vqs = mic_del_vqs,
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};
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static irqreturn_t
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mic_virtio_intr_handler(int irq, void *data)
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{
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struct mic_vdev *mvdev = data;
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struct virtqueue *vq;
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mic_ack_interrupt(mvdev->mdev);
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list_for_each_entry(vq, &mvdev->vdev.vqs, list)
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vring_interrupt(0, vq);
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return IRQ_HANDLED;
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}
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static void mic_virtio_release_dev(struct device *_d)
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{
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/*
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* No need for a release method similar to virtio PCI.
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* Provide an empty one to avoid getting a warning from core.
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*/
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}
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/*
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* adds a new device and register it with virtio
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* appropriate drivers are loaded by the device model
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*/
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static int mic_add_device(struct mic_device_desc __iomem *d,
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unsigned int offset, struct mic_driver *mdrv)
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{
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struct mic_vdev *mvdev;
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int ret;
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||||
int virtio_db;
|
||||
u8 type = ioread8(&d->type);
|
||||
|
||||
mvdev = kzalloc(sizeof(*mvdev), GFP_KERNEL);
|
||||
if (!mvdev) {
|
||||
dev_err(mdrv->dev, "Cannot allocate mic dev %u type %u\n",
|
||||
offset, type);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
mvdev->mdev = &mdrv->mdev;
|
||||
mvdev->vdev.dev.parent = mdrv->dev;
|
||||
mvdev->vdev.dev.release = mic_virtio_release_dev;
|
||||
mvdev->vdev.id.device = type;
|
||||
mvdev->vdev.config = &mic_vq_config_ops;
|
||||
mvdev->desc = d;
|
||||
mvdev->dc = (void __iomem *)d + mic_aligned_desc_size(d);
|
||||
init_completion(&mvdev->reset_done);
|
||||
|
||||
virtio_db = mic_next_card_db();
|
||||
mvdev->virtio_cookie = mic_request_card_irq(mic_virtio_intr_handler,
|
||||
NULL, "virtio intr", mvdev, virtio_db);
|
||||
if (IS_ERR(mvdev->virtio_cookie)) {
|
||||
ret = PTR_ERR(mvdev->virtio_cookie);
|
||||
goto kfree;
|
||||
}
|
||||
iowrite8((u8)virtio_db, &mvdev->dc->h2c_vdev_db);
|
||||
mvdev->c2h_vdev_db = ioread8(&mvdev->dc->c2h_vdev_db);
|
||||
|
||||
ret = register_virtio_device(&mvdev->vdev);
|
||||
if (ret) {
|
||||
dev_err(mic_dev(mvdev),
|
||||
"Failed to register mic device %u type %u\n",
|
||||
offset, type);
|
||||
goto free_irq;
|
||||
}
|
||||
iowrite64((u64)mvdev, &mvdev->dc->vdev);
|
||||
dev_dbg(mic_dev(mvdev), "%s: registered mic device %u type %u mvdev %p\n",
|
||||
__func__, offset, type, mvdev);
|
||||
|
||||
return 0;
|
||||
|
||||
free_irq:
|
||||
mic_free_card_irq(mvdev->virtio_cookie, mvdev);
|
||||
kfree:
|
||||
kfree(mvdev);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
* match for a mic device with a specific desc pointer
|
||||
*/
|
||||
static int mic_match_desc(struct device *dev, void *data)
|
||||
{
|
||||
struct virtio_device *vdev = dev_to_virtio(dev);
|
||||
struct mic_vdev *mvdev = to_micvdev(vdev);
|
||||
|
||||
return mvdev->desc == (void __iomem *)data;
|
||||
}
|
||||
|
||||
static void mic_handle_config_change(struct mic_device_desc __iomem *d,
|
||||
unsigned int offset, struct mic_driver *mdrv)
|
||||
{
|
||||
struct mic_device_ctrl __iomem *dc
|
||||
= (void __iomem *)d + mic_aligned_desc_size(d);
|
||||
struct mic_vdev *mvdev = (struct mic_vdev *)ioread64(&dc->vdev);
|
||||
|
||||
if (ioread8(&dc->config_change) != MIC_VIRTIO_PARAM_CONFIG_CHANGED)
|
||||
return;
|
||||
|
||||
dev_dbg(mdrv->dev, "%s %d\n", __func__, __LINE__);
|
||||
virtio_config_changed(&mvdev->vdev);
|
||||
iowrite8(1, &dc->guest_ack);
|
||||
}
|
||||
|
||||
/*
|
||||
* removes a virtio device if a hot remove event has been
|
||||
* requested by the host.
|
||||
*/
|
||||
static int mic_remove_device(struct mic_device_desc __iomem *d,
|
||||
unsigned int offset, struct mic_driver *mdrv)
|
||||
{
|
||||
struct mic_device_ctrl __iomem *dc
|
||||
= (void __iomem *)d + mic_aligned_desc_size(d);
|
||||
struct mic_vdev *mvdev = (struct mic_vdev *)ioread64(&dc->vdev);
|
||||
u8 status;
|
||||
int ret = -1;
|
||||
|
||||
if (ioread8(&dc->config_change) == MIC_VIRTIO_PARAM_DEV_REMOVE) {
|
||||
dev_dbg(mdrv->dev,
|
||||
"%s %d config_change %d type %d mvdev %p\n",
|
||||
__func__, __LINE__,
|
||||
ioread8(&dc->config_change), ioread8(&d->type), mvdev);
|
||||
|
||||
status = ioread8(&d->status);
|
||||
reinit_completion(&mvdev->reset_done);
|
||||
unregister_virtio_device(&mvdev->vdev);
|
||||
mic_free_card_irq(mvdev->virtio_cookie, mvdev);
|
||||
if (status & VIRTIO_CONFIG_S_DRIVER_OK)
|
||||
wait_for_completion(&mvdev->reset_done);
|
||||
kfree(mvdev);
|
||||
iowrite8(1, &dc->guest_ack);
|
||||
dev_dbg(mdrv->dev, "%s %d guest_ack %d\n",
|
||||
__func__, __LINE__, ioread8(&dc->guest_ack));
|
||||
ret = 0;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
#define REMOVE_DEVICES true
|
||||
|
||||
static void mic_scan_devices(struct mic_driver *mdrv, bool remove)
|
||||
{
|
||||
s8 type;
|
||||
unsigned int i;
|
||||
struct mic_device_desc __iomem *d;
|
||||
struct mic_device_ctrl __iomem *dc;
|
||||
struct device *dev;
|
||||
int ret;
|
||||
|
||||
for (i = sizeof(struct mic_bootparam); i < MIC_DP_SIZE;
|
||||
i += mic_total_desc_size(d)) {
|
||||
d = mdrv->dp + i;
|
||||
dc = (void __iomem *)d + mic_aligned_desc_size(d);
|
||||
/*
|
||||
* This read barrier is paired with the corresponding write
|
||||
* barrier on the host which is inserted before adding or
|
||||
* removing a virtio device descriptor, by updating the type.
|
||||
*/
|
||||
rmb();
|
||||
type = ioread8(&d->type);
|
||||
|
||||
/* end of list */
|
||||
if (type == 0)
|
||||
break;
|
||||
|
||||
if (type == -1)
|
||||
continue;
|
||||
|
||||
/* device already exists */
|
||||
dev = device_find_child(mdrv->dev, (void __force *)d,
|
||||
mic_match_desc);
|
||||
if (dev) {
|
||||
if (remove)
|
||||
iowrite8(MIC_VIRTIO_PARAM_DEV_REMOVE,
|
||||
&dc->config_change);
|
||||
put_device(dev);
|
||||
mic_handle_config_change(d, i, mdrv);
|
||||
ret = mic_remove_device(d, i, mdrv);
|
||||
if (!ret && !remove)
|
||||
iowrite8(-1, &d->type);
|
||||
if (remove) {
|
||||
iowrite8(0, &dc->config_change);
|
||||
iowrite8(0, &dc->guest_ack);
|
||||
}
|
||||
continue;
|
||||
}
|
||||
|
||||
/* new device */
|
||||
dev_dbg(mdrv->dev, "%s %d Adding new virtio device %p\n",
|
||||
__func__, __LINE__, d);
|
||||
if (!remove)
|
||||
mic_add_device(d, i, mdrv);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* mic_hotplug_device tries to find changes in the device page.
|
||||
*/
|
||||
static void mic_hotplug_devices(struct work_struct *work)
|
||||
{
|
||||
struct mic_driver *mdrv = container_of(work,
|
||||
struct mic_driver, hotplug_work);
|
||||
|
||||
mic_scan_devices(mdrv, !REMOVE_DEVICES);
|
||||
}
|
||||
|
||||
/*
|
||||
* Interrupt handler for hot plug/config changes etc.
|
||||
*/
|
||||
static irqreturn_t
|
||||
mic_extint_handler(int irq, void *data)
|
||||
{
|
||||
struct mic_driver *mdrv = (struct mic_driver *)data;
|
||||
|
||||
dev_dbg(mdrv->dev, "%s %d hotplug work\n",
|
||||
__func__, __LINE__);
|
||||
mic_ack_interrupt(&mdrv->mdev);
|
||||
schedule_work(&mdrv->hotplug_work);
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
/*
|
||||
* Init function for virtio
|
||||
*/
|
||||
int mic_devices_init(struct mic_driver *mdrv)
|
||||
{
|
||||
int rc;
|
||||
struct mic_bootparam __iomem *bootparam;
|
||||
int config_db;
|
||||
|
||||
INIT_WORK(&mdrv->hotplug_work, mic_hotplug_devices);
|
||||
mic_scan_devices(mdrv, !REMOVE_DEVICES);
|
||||
|
||||
config_db = mic_next_card_db();
|
||||
virtio_config_cookie = mic_request_card_irq(mic_extint_handler, NULL,
|
||||
"virtio_config_intr", mdrv,
|
||||
config_db);
|
||||
if (IS_ERR(virtio_config_cookie)) {
|
||||
rc = PTR_ERR(virtio_config_cookie);
|
||||
goto exit;
|
||||
}
|
||||
|
||||
bootparam = mdrv->dp;
|
||||
iowrite8(config_db, &bootparam->h2c_config_db);
|
||||
return 0;
|
||||
exit:
|
||||
return rc;
|
||||
}
|
||||
|
||||
/*
|
||||
* Uninit function for virtio
|
||||
*/
|
||||
void mic_devices_uninit(struct mic_driver *mdrv)
|
||||
{
|
||||
struct mic_bootparam __iomem *bootparam = mdrv->dp;
|
||||
iowrite8(-1, &bootparam->h2c_config_db);
|
||||
mic_free_card_irq(virtio_config_cookie, mdrv);
|
||||
flush_work(&mdrv->hotplug_work);
|
||||
mic_scan_devices(mdrv, REMOVE_DEVICES);
|
||||
}
|
||||
@ -1,76 +0,0 @@
|
||||
/*
|
||||
* Intel MIC Platform Software Stack (MPSS)
|
||||
*
|
||||
* Copyright(c) 2013 Intel Corporation.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* 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".
|
||||
*
|
||||
* Disclaimer: The codes contained in these modules may be specific to
|
||||
* the Intel Software Development Platform codenamed: Knights Ferry, and
|
||||
* the Intel product codenamed: Knights Corner, and are not backward
|
||||
* compatible with other Intel products. Additionally, Intel will NOT
|
||||
* support the codes or instruction set in future products.
|
||||
*
|
||||
* Intel MIC Card driver.
|
||||
*
|
||||
*/
|
||||
#ifndef __MIC_CARD_VIRTIO_H
|
||||
#define __MIC_CARD_VIRTIO_H
|
||||
|
||||
#include <linux/mic_common.h>
|
||||
#include "mic_device.h"
|
||||
|
||||
/*
|
||||
* 64 bit I/O access
|
||||
*/
|
||||
#ifndef ioread64
|
||||
#define ioread64 readq
|
||||
#endif
|
||||
#ifndef iowrite64
|
||||
#define iowrite64 writeq
|
||||
#endif
|
||||
|
||||
static inline unsigned mic_desc_size(struct mic_device_desc __iomem *desc)
|
||||
{
|
||||
return sizeof(*desc)
|
||||
+ ioread8(&desc->num_vq) * sizeof(struct mic_vqconfig)
|
||||
+ ioread8(&desc->feature_len) * 2
|
||||
+ ioread8(&desc->config_len);
|
||||
}
|
||||
|
||||
static inline struct mic_vqconfig __iomem *
|
||||
mic_vq_config(struct mic_device_desc __iomem *desc)
|
||||
{
|
||||
return (struct mic_vqconfig __iomem *)(desc + 1);
|
||||
}
|
||||
|
||||
static inline __u8 __iomem *
|
||||
mic_vq_features(struct mic_device_desc __iomem *desc)
|
||||
{
|
||||
return (__u8 __iomem *)(mic_vq_config(desc) + ioread8(&desc->num_vq));
|
||||
}
|
||||
|
||||
static inline __u8 __iomem *
|
||||
mic_vq_configspace(struct mic_device_desc __iomem *desc)
|
||||
{
|
||||
return mic_vq_features(desc) + ioread8(&desc->feature_len) * 2;
|
||||
}
|
||||
static inline unsigned mic_total_desc_size(struct mic_device_desc __iomem *desc)
|
||||
{
|
||||
return mic_aligned_desc_size(desc) + sizeof(struct mic_device_ctrl);
|
||||
}
|
||||
|
||||
int mic_devices_init(struct mic_driver *mdrv);
|
||||
void mic_devices_uninit(struct mic_driver *mdrv);
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user