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path: root/drivers/misc/mic/host/mic_boot.c
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Diffstat (limited to 'drivers/misc/mic/host/mic_boot.c')
-rw-r--r--drivers/misc/mic/host/mic_boot.c300
1 files changed, 0 insertions, 300 deletions
diff --git a/drivers/misc/mic/host/mic_boot.c b/drivers/misc/mic/host/mic_boot.c
deleted file mode 100644
index b75c6b5..0000000
--- a/drivers/misc/mic/host/mic_boot.c
+++ /dev/null
@@ -1,300 +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".
- *
- * Intel MIC Host driver.
- *
- */
-#include <linux/delay.h>
-#include <linux/firmware.h>
-#include <linux/pci.h>
-
-#include <linux/mic_common.h>
-#include "../common/mic_dev.h"
-#include "mic_device.h"
-#include "mic_smpt.h"
-#include "mic_virtio.h"
-
-/**
- * mic_reset - Reset the MIC device.
- * @mdev: pointer to mic_device instance
- */
-static void mic_reset(struct mic_device *mdev)
-{
- int i;
-
-#define MIC_RESET_TO (45)
-
- reinit_completion(&mdev->reset_wait);
- mdev->ops->reset_fw_ready(mdev);
- mdev->ops->reset(mdev);
-
- for (i = 0; i < MIC_RESET_TO; i++) {
- if (mdev->ops->is_fw_ready(mdev))
- goto done;
- /*
- * Resets typically take 10s of seconds to complete.
- * Since an MMIO read is required to check if the
- * firmware is ready or not, a 1 second delay works nicely.
- */
- msleep(1000);
- }
- mic_set_state(mdev, MIC_RESET_FAILED);
-done:
- complete_all(&mdev->reset_wait);
-}
-
-/* Initialize the MIC bootparams */
-void mic_bootparam_init(struct mic_device *mdev)
-{
- struct mic_bootparam *bootparam = mdev->dp;
-
- bootparam->magic = cpu_to_le32(MIC_MAGIC);
- bootparam->c2h_shutdown_db = mdev->shutdown_db;
- bootparam->h2c_shutdown_db = -1;
- bootparam->h2c_config_db = -1;
- bootparam->shutdown_status = 0;
- bootparam->shutdown_card = 0;
-}
-
-/**
- * mic_start - Start the MIC.
- * @mdev: pointer to mic_device instance
- * @buf: buffer containing boot string including firmware/ramdisk path.
- *
- * This function prepares an MIC for boot and initiates boot.
- * RETURNS: An appropriate -ERRNO error value on error, or zero for success.
- */
-int mic_start(struct mic_device *mdev, const char *buf)
-{
- int rc;
- mutex_lock(&mdev->mic_mutex);
-retry:
- if (MIC_OFFLINE != mdev->state) {
- rc = -EINVAL;
- goto unlock_ret;
- }
- if (!mdev->ops->is_fw_ready(mdev)) {
- mic_reset(mdev);
- /*
- * The state will either be MIC_OFFLINE if the reset succeeded
- * or MIC_RESET_FAILED if the firmware reset failed.
- */
- goto retry;
- }
- rc = mdev->ops->load_mic_fw(mdev, buf);
- if (rc)
- goto unlock_ret;
- mic_smpt_restore(mdev);
- mic_intr_restore(mdev);
- mdev->intr_ops->enable_interrupts(mdev);
- mdev->ops->write_spad(mdev, MIC_DPLO_SPAD, mdev->dp_dma_addr);
- mdev->ops->write_spad(mdev, MIC_DPHI_SPAD, mdev->dp_dma_addr >> 32);
- mdev->ops->send_firmware_intr(mdev);
- mic_set_state(mdev, MIC_ONLINE);
-unlock_ret:
- mutex_unlock(&mdev->mic_mutex);
- return rc;
-}
-
-/**
- * mic_stop - Prepare the MIC for reset and trigger reset.
- * @mdev: pointer to mic_device instance
- * @force: force a MIC to reset even if it is already offline.
- *
- * RETURNS: None.
- */
-void mic_stop(struct mic_device *mdev, bool force)
-{
- mutex_lock(&mdev->mic_mutex);
- if (MIC_OFFLINE != mdev->state || force) {
- mic_virtio_reset_devices(mdev);
- mic_bootparam_init(mdev);
- mic_reset(mdev);
- if (MIC_RESET_FAILED == mdev->state)
- goto unlock;
- mic_set_shutdown_status(mdev, MIC_NOP);
- if (MIC_SUSPENDED != mdev->state)
- mic_set_state(mdev, MIC_OFFLINE);
- }
-unlock:
- mutex_unlock(&mdev->mic_mutex);
-}
-
-/**
- * mic_shutdown - Initiate MIC shutdown.
- * @mdev: pointer to mic_device instance
- *
- * RETURNS: None.
- */
-void mic_shutdown(struct mic_device *mdev)
-{
- struct mic_bootparam *bootparam = mdev->dp;
- s8 db = bootparam->h2c_shutdown_db;
-
- mutex_lock(&mdev->mic_mutex);
- if (MIC_ONLINE == mdev->state && db != -1) {
- bootparam->shutdown_card = 1;
- mdev->ops->send_intr(mdev, db);
- mic_set_state(mdev, MIC_SHUTTING_DOWN);
- }
- mutex_unlock(&mdev->mic_mutex);
-}
-
-/**
- * mic_shutdown_work - Handle shutdown interrupt from MIC.
- * @work: The work structure.
- *
- * This work is scheduled whenever the host has received a shutdown
- * interrupt from the MIC.
- */
-void mic_shutdown_work(struct work_struct *work)
-{
- struct mic_device *mdev = container_of(work, struct mic_device,
- shutdown_work);
- struct mic_bootparam *bootparam = mdev->dp;
-
- mutex_lock(&mdev->mic_mutex);
- mic_set_shutdown_status(mdev, bootparam->shutdown_status);
- bootparam->shutdown_status = 0;
-
- /*
- * if state is MIC_SUSPENDED, OSPM suspend is in progress. We do not
- * change the state here so as to prevent users from booting the card
- * during and after the suspend operation.
- */
- if (MIC_SHUTTING_DOWN != mdev->state &&
- MIC_SUSPENDED != mdev->state)
- mic_set_state(mdev, MIC_SHUTTING_DOWN);
- mutex_unlock(&mdev->mic_mutex);
-}
-
-/**
- * mic_reset_trigger_work - Trigger MIC reset.
- * @work: The work structure.
- *
- * This work is scheduled whenever the host wants to reset the MIC.
- */
-void mic_reset_trigger_work(struct work_struct *work)
-{
- struct mic_device *mdev = container_of(work, struct mic_device,
- reset_trigger_work);
-
- mic_stop(mdev, false);
-}
-
-/**
- * mic_complete_resume - Complete MIC Resume after an OSPM suspend/hibernate
- * event.
- * @mdev: pointer to mic_device instance
- *
- * RETURNS: None.
- */
-void mic_complete_resume(struct mic_device *mdev)
-{
- if (mdev->state != MIC_SUSPENDED) {
- dev_warn(mdev->sdev->parent, "state %d should be %d\n",
- mdev->state, MIC_SUSPENDED);
- return;
- }
-
- /* Make sure firmware is ready */
- if (!mdev->ops->is_fw_ready(mdev))
- mic_stop(mdev, true);
-
- mutex_lock(&mdev->mic_mutex);
- mic_set_state(mdev, MIC_OFFLINE);
- mutex_unlock(&mdev->mic_mutex);
-}
-
-/**
- * mic_prepare_suspend - Handle suspend notification for the MIC device.
- * @mdev: pointer to mic_device instance
- *
- * RETURNS: None.
- */
-void mic_prepare_suspend(struct mic_device *mdev)
-{
- int rc;
-
-#define MIC_SUSPEND_TIMEOUT (60 * HZ)
-
- mutex_lock(&mdev->mic_mutex);
- switch (mdev->state) {
- case MIC_OFFLINE:
- /*
- * Card is already offline. Set state to MIC_SUSPENDED
- * to prevent users from booting the card.
- */
- mic_set_state(mdev, MIC_SUSPENDED);
- mutex_unlock(&mdev->mic_mutex);
- break;
- case MIC_ONLINE:
- /*
- * Card is online. Set state to MIC_SUSPENDING and notify
- * MIC user space daemon which will issue card
- * shutdown and reset.
- */
- mic_set_state(mdev, MIC_SUSPENDING);
- mutex_unlock(&mdev->mic_mutex);
- rc = wait_for_completion_timeout(&mdev->reset_wait,
- MIC_SUSPEND_TIMEOUT);
- /* Force reset the card if the shutdown completion timed out */
- if (!rc) {
- mutex_lock(&mdev->mic_mutex);
- mic_set_state(mdev, MIC_SUSPENDED);
- mutex_unlock(&mdev->mic_mutex);
- mic_stop(mdev, true);
- }
- break;
- case MIC_SHUTTING_DOWN:
- /*
- * Card is shutting down. Set state to MIC_SUSPENDED
- * to prevent further boot of the card.
- */
- mic_set_state(mdev, MIC_SUSPENDED);
- mutex_unlock(&mdev->mic_mutex);
- rc = wait_for_completion_timeout(&mdev->reset_wait,
- MIC_SUSPEND_TIMEOUT);
- /* Force reset the card if the shutdown completion timed out */
- if (!rc)
- mic_stop(mdev, true);
- break;
- default:
- mutex_unlock(&mdev->mic_mutex);
- break;
- }
-}
-
-/**
- * mic_suspend - Initiate MIC suspend. Suspend merely issues card shutdown.
- * @mdev: pointer to mic_device instance
- *
- * RETURNS: None.
- */
-void mic_suspend(struct mic_device *mdev)
-{
- struct mic_bootparam *bootparam = mdev->dp;
- s8 db = bootparam->h2c_shutdown_db;
-
- mutex_lock(&mdev->mic_mutex);
- if (MIC_SUSPENDING == mdev->state && db != -1) {
- bootparam->shutdown_card = 1;
- mdev->ops->send_intr(mdev, db);
- mic_set_state(mdev, MIC_SUSPENDED);
- }
- mutex_unlock(&mdev->mic_mutex);
-}
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