mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-25 21:24:08 +08:00
d3bad75a6d
Here's the big driver core and sysfs patch set for 3.14-rc1.
There's a lot of work here moving sysfs logic out into a "kernfs" to
allow other subsystems to also have a virtual filesystem with the same
attributes of sysfs (handle device disconnect, dynamic creation /
removal as needed / unneeded, etc. This is primarily being done for
the cgroups filesystem, but the goal is to also move debugfs to it when
it is ready, solving all of the known issues in that filesystem as well.
The code isn't completed yet, but all should be stable now (there is a
big section that was reverted due to problems found when testing.)
There's also some other smaller fixes, and a driver core addition that
allows for a "collection" of objects, that the DRM people will be using
soon (it's in this tree to make merges after -rc1 easier.)
All of this has been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (GNU/Linux)
iEYEABECAAYFAlLdh0cACgkQMUfUDdst+ylv4QCfeDKDgLo4LsaBIIrFSxLoH/c7
UUsAoMPRwA0h8wy+BQcJAg4H4J4maKj3
=0pc0
-----END PGP SIGNATURE-----
Merge tag 'driver-core-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core / sysfs patches from Greg KH:
"Here's the big driver core and sysfs patch set for 3.14-rc1.
There's a lot of work here moving sysfs logic out into a "kernfs" to
allow other subsystems to also have a virtual filesystem with the same
attributes of sysfs (handle device disconnect, dynamic creation /
removal as needed / unneeded, etc)
This is primarily being done for the cgroups filesystem, but the goal
is to also move debugfs to it when it is ready, solving all of the
known issues in that filesystem as well. The code isn't completed
yet, but all should be stable now (there is a big section that was
reverted due to problems found when testing)
There's also some other smaller fixes, and a driver core addition that
allows for a "collection" of objects, that the DRM people will be
using soon (it's in this tree to make merges after -rc1 easier)
All of this has been in linux-next with no reported issues"
* tag 'driver-core-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (113 commits)
kernfs: associate a new kernfs_node with its parent on creation
kernfs: add struct dentry declaration in kernfs.h
kernfs: fix get_active failure handling in kernfs_seq_*()
Revert "kernfs: fix get_active failure handling in kernfs_seq_*()"
Revert "kernfs: replace kernfs_node->u.completion with kernfs_root->deactivate_waitq"
Revert "kernfs: remove KERNFS_ACTIVE_REF and add kernfs_lockdep()"
Revert "kernfs: remove KERNFS_REMOVED"
Revert "kernfs: restructure removal path to fix possible premature return"
Revert "kernfs: invoke kernfs_unmap_bin_file() directly from __kernfs_remove()"
Revert "kernfs: remove kernfs_addrm_cxt"
Revert "kernfs: make kernfs_get_active() block if the node is deactivated but not removed"
Revert "kernfs: implement kernfs_{de|re}activate[_self]()"
Revert "kernfs, sysfs, driver-core: implement kernfs_remove_self() and its wrappers"
Revert "pci: use device_remove_file_self() instead of device_schedule_callback()"
Revert "scsi: use device_remove_file_self() instead of device_schedule_callback()"
Revert "s390: use device_remove_file_self() instead of device_schedule_callback()"
Revert "sysfs, driver-core: remove unused {sysfs|device}_schedule_callback_owner()"
Revert "kernfs: remove unnecessary NULL check in __kernfs_remove()"
kernfs: remove unnecessary NULL check in __kernfs_remove()
drivers/base: provide an infrastructure for componentised subsystems
...
207 lines
6.6 KiB
C
207 lines
6.6 KiB
C
/*
|
|
* 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.
|
|
*
|
|
*/
|
|
#ifndef _MIC_DEVICE_H_
|
|
#define _MIC_DEVICE_H_
|
|
|
|
#include <linux/cdev.h>
|
|
#include <linux/idr.h>
|
|
#include <linux/notifier.h>
|
|
|
|
#include "mic_intr.h"
|
|
|
|
/* The maximum number of MIC devices supported in a single host system. */
|
|
#define MIC_MAX_NUM_DEVS 256
|
|
|
|
/**
|
|
* enum mic_hw_family - The hardware family to which a device belongs.
|
|
*/
|
|
enum mic_hw_family {
|
|
MIC_FAMILY_X100 = 0,
|
|
MIC_FAMILY_UNKNOWN
|
|
};
|
|
|
|
/**
|
|
* enum mic_stepping - MIC stepping ids.
|
|
*/
|
|
enum mic_stepping {
|
|
MIC_A0_STEP = 0x0,
|
|
MIC_B0_STEP = 0x10,
|
|
MIC_B1_STEP = 0x11,
|
|
MIC_C0_STEP = 0x20,
|
|
};
|
|
|
|
/**
|
|
* struct mic_device - MIC device information for each card.
|
|
*
|
|
* @mmio: MMIO bar information.
|
|
* @aper: Aperture bar information.
|
|
* @family: The MIC family to which this device belongs.
|
|
* @ops: MIC HW specific operations.
|
|
* @id: The unique device id for this MIC device.
|
|
* @stepping: Stepping ID.
|
|
* @attr_group: Pointer to list of sysfs attribute groups.
|
|
* @sdev: Device for sysfs entries.
|
|
* @mic_mutex: Mutex for synchronizing access to mic_device.
|
|
* @intr_ops: HW specific interrupt operations.
|
|
* @smpt_ops: Hardware specific SMPT operations.
|
|
* @smpt: MIC SMPT information.
|
|
* @intr_info: H/W specific interrupt information.
|
|
* @irq_info: The OS specific irq information
|
|
* @dbg_dir: debugfs directory of this MIC device.
|
|
* @cmdline: Kernel command line.
|
|
* @firmware: Firmware file name.
|
|
* @ramdisk: Ramdisk file name.
|
|
* @bootmode: Boot mode i.e. "linux" or "elf" for flash updates.
|
|
* @bootaddr: MIC boot address.
|
|
* @reset_trigger_work: Work for triggering reset requests.
|
|
* @shutdown_work: Work for handling shutdown interrupts.
|
|
* @state: MIC state.
|
|
* @shutdown_status: MIC status reported by card for shutdown/crashes.
|
|
* @state_sysfs: Sysfs dirent for notifying ring 3 about MIC state changes.
|
|
* @reset_wait: Waitqueue for sleeping while reset completes.
|
|
* @log_buf_addr: Log buffer address for MIC.
|
|
* @log_buf_len: Log buffer length address for MIC.
|
|
* @dp: virtio device page
|
|
* @dp_dma_addr: virtio device page DMA address.
|
|
* @shutdown_db: shutdown doorbell.
|
|
* @shutdown_cookie: shutdown cookie.
|
|
* @cdev: Character device for MIC.
|
|
* @vdev_list: list of virtio devices.
|
|
* @pm_notifier: Handles PM notifications from the OS.
|
|
*/
|
|
struct mic_device {
|
|
struct mic_mw mmio;
|
|
struct mic_mw aper;
|
|
enum mic_hw_family family;
|
|
struct mic_hw_ops *ops;
|
|
int id;
|
|
enum mic_stepping stepping;
|
|
const struct attribute_group **attr_group;
|
|
struct device *sdev;
|
|
struct mutex mic_mutex;
|
|
struct mic_hw_intr_ops *intr_ops;
|
|
struct mic_smpt_ops *smpt_ops;
|
|
struct mic_smpt_info *smpt;
|
|
struct mic_intr_info *intr_info;
|
|
struct mic_irq_info irq_info;
|
|
struct dentry *dbg_dir;
|
|
char *cmdline;
|
|
char *firmware;
|
|
char *ramdisk;
|
|
char *bootmode;
|
|
u32 bootaddr;
|
|
struct work_struct reset_trigger_work;
|
|
struct work_struct shutdown_work;
|
|
u8 state;
|
|
u8 shutdown_status;
|
|
struct kernfs_node *state_sysfs;
|
|
struct completion reset_wait;
|
|
void *log_buf_addr;
|
|
int *log_buf_len;
|
|
void *dp;
|
|
dma_addr_t dp_dma_addr;
|
|
int shutdown_db;
|
|
struct mic_irq *shutdown_cookie;
|
|
struct cdev cdev;
|
|
struct list_head vdev_list;
|
|
struct notifier_block pm_notifier;
|
|
};
|
|
|
|
/**
|
|
* struct mic_hw_ops - MIC HW specific operations.
|
|
* @aper_bar: Aperture bar resource number.
|
|
* @mmio_bar: MMIO bar resource number.
|
|
* @read_spad: Read from scratch pad register.
|
|
* @write_spad: Write to scratch pad register.
|
|
* @send_intr: Send an interrupt for a particular doorbell on the card.
|
|
* @ack_interrupt: Hardware specific operations to ack the h/w on
|
|
* receipt of an interrupt.
|
|
* @intr_workarounds: Hardware specific workarounds needed after
|
|
* handling an interrupt.
|
|
* @reset: Reset the remote processor.
|
|
* @reset_fw_ready: Reset firmware ready field.
|
|
* @is_fw_ready: Check if firmware is ready for OS download.
|
|
* @send_firmware_intr: Send an interrupt to the card firmware.
|
|
* @load_mic_fw: Load firmware segments required to boot the card
|
|
* into card memory. This includes the kernel, command line, ramdisk etc.
|
|
* @get_postcode: Get post code status from firmware.
|
|
*/
|
|
struct mic_hw_ops {
|
|
u8 aper_bar;
|
|
u8 mmio_bar;
|
|
u32 (*read_spad)(struct mic_device *mdev, unsigned int idx);
|
|
void (*write_spad)(struct mic_device *mdev, unsigned int idx, u32 val);
|
|
void (*send_intr)(struct mic_device *mdev, int doorbell);
|
|
u32 (*ack_interrupt)(struct mic_device *mdev);
|
|
void (*intr_workarounds)(struct mic_device *mdev);
|
|
void (*reset)(struct mic_device *mdev);
|
|
void (*reset_fw_ready)(struct mic_device *mdev);
|
|
bool (*is_fw_ready)(struct mic_device *mdev);
|
|
void (*send_firmware_intr)(struct mic_device *mdev);
|
|
int (*load_mic_fw)(struct mic_device *mdev, const char *buf);
|
|
u32 (*get_postcode)(struct mic_device *mdev);
|
|
};
|
|
|
|
/**
|
|
* mic_mmio_read - read from an MMIO register.
|
|
* @mw: MMIO register base virtual address.
|
|
* @offset: register offset.
|
|
*
|
|
* RETURNS: register value.
|
|
*/
|
|
static inline u32 mic_mmio_read(struct mic_mw *mw, u32 offset)
|
|
{
|
|
return ioread32(mw->va + offset);
|
|
}
|
|
|
|
/**
|
|
* mic_mmio_write - write to an MMIO register.
|
|
* @mw: MMIO register base virtual address.
|
|
* @val: the data value to put into the register
|
|
* @offset: register offset.
|
|
*
|
|
* RETURNS: none.
|
|
*/
|
|
static inline void
|
|
mic_mmio_write(struct mic_mw *mw, u32 val, u32 offset)
|
|
{
|
|
iowrite32(val, mw->va + offset);
|
|
}
|
|
|
|
void mic_sysfs_init(struct mic_device *mdev);
|
|
int mic_start(struct mic_device *mdev, const char *buf);
|
|
void mic_stop(struct mic_device *mdev, bool force);
|
|
void mic_shutdown(struct mic_device *mdev);
|
|
void mic_reset_delayed_work(struct work_struct *work);
|
|
void mic_reset_trigger_work(struct work_struct *work);
|
|
void mic_shutdown_work(struct work_struct *work);
|
|
void mic_bootparam_init(struct mic_device *mdev);
|
|
void mic_set_state(struct mic_device *mdev, u8 state);
|
|
void mic_set_shutdown_status(struct mic_device *mdev, u8 status);
|
|
void mic_create_debug_dir(struct mic_device *dev);
|
|
void mic_delete_debug_dir(struct mic_device *dev);
|
|
void __init mic_init_debugfs(void);
|
|
void mic_exit_debugfs(void);
|
|
void mic_prepare_suspend(struct mic_device *mdev);
|
|
void mic_complete_resume(struct mic_device *mdev);
|
|
void mic_suspend(struct mic_device *mdev);
|
|
#endif
|