mirror of
https://github.com/rd-stuffs/msm-4.14.git
synced 2025-02-20 11:45:48 +08:00
be4dac0fca
Add support for new Intel NTB devices on upcoming Xeon hardware. Since the Xeon hardware design is already in place in the driver, all that is needed are the new device ids. Remove the device IDs for NTB devs running in Transparent Bridge mode, as this driver is not being used for those devices. Rename the device IDs for NTB devs running in NTB-RP mode to better identify their usage model. "PS" to denote the Primary Side of NTB, and "SS" to denote the secondary side. The primary side is the interface exposed to the local system, and the secondary side is the interface exposed to the remote system. Signed-off-by: Jon Mason <jon.mason@intel.com>
235 lines
7.4 KiB
C
235 lines
7.4 KiB
C
/*
|
|
* This file is provided under a dual BSD/GPLv2 license. When using or
|
|
* redistributing this file, you may do so under either license.
|
|
*
|
|
* GPL LICENSE SUMMARY
|
|
*
|
|
* Copyright(c) 2012 Intel Corporation. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of version 2 of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* BSD LICENSE
|
|
*
|
|
* Copyright(c) 2012 Intel Corporation. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copy
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* * Neither the name of Intel Corporation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* Intel PCIe NTB Linux driver
|
|
*
|
|
* Contact Information:
|
|
* Jon Mason <jon.mason@intel.com>
|
|
*/
|
|
|
|
#define PCI_DEVICE_ID_INTEL_NTB_B2B_JSF 0x3725
|
|
#define PCI_DEVICE_ID_INTEL_NTB_PS_JSF 0x3726
|
|
#define PCI_DEVICE_ID_INTEL_NTB_SS_JSF 0x3727
|
|
#define PCI_DEVICE_ID_INTEL_NTB_B2B_SNB 0x3C0D
|
|
#define PCI_DEVICE_ID_INTEL_NTB_PS_SNB 0x3C0E
|
|
#define PCI_DEVICE_ID_INTEL_NTB_SS_SNB 0x3C0F
|
|
#define PCI_DEVICE_ID_INTEL_NTB_B2B_IVT 0x0E0D
|
|
#define PCI_DEVICE_ID_INTEL_NTB_PS_IVT 0x0E0E
|
|
#define PCI_DEVICE_ID_INTEL_NTB_SS_IVT 0x0E0F
|
|
#define PCI_DEVICE_ID_INTEL_NTB_B2B_HSX 0x2F0D
|
|
#define PCI_DEVICE_ID_INTEL_NTB_PS_HSX 0x2F0E
|
|
#define PCI_DEVICE_ID_INTEL_NTB_SS_HSX 0x2F0F
|
|
#define PCI_DEVICE_ID_INTEL_NTB_B2B_BWD 0x0C4E
|
|
|
|
#define msix_table_size(control) ((control & PCI_MSIX_FLAGS_QSIZE)+1)
|
|
|
|
#define NTB_BAR_MMIO 0
|
|
#define NTB_BAR_23 2
|
|
#define NTB_BAR_45 4
|
|
#define NTB_BAR_MASK ((1 << NTB_BAR_MMIO) | (1 << NTB_BAR_23) |\
|
|
(1 << NTB_BAR_45))
|
|
|
|
#define NTB_LINK_DOWN 0
|
|
#define NTB_LINK_UP 1
|
|
|
|
#define NTB_HB_TIMEOUT msecs_to_jiffies(1000)
|
|
|
|
#define NTB_MAX_NUM_MW 2
|
|
|
|
enum ntb_hw_event {
|
|
NTB_EVENT_SW_EVENT0 = 0,
|
|
NTB_EVENT_SW_EVENT1,
|
|
NTB_EVENT_SW_EVENT2,
|
|
NTB_EVENT_HW_ERROR,
|
|
NTB_EVENT_HW_LINK_UP,
|
|
NTB_EVENT_HW_LINK_DOWN,
|
|
};
|
|
|
|
struct ntb_mw {
|
|
dma_addr_t phys_addr;
|
|
void __iomem *vbase;
|
|
resource_size_t bar_sz;
|
|
};
|
|
|
|
struct ntb_db_cb {
|
|
void (*callback) (void *data, int db_num);
|
|
unsigned int db_num;
|
|
void *data;
|
|
struct ntb_device *ndev;
|
|
};
|
|
|
|
struct ntb_device {
|
|
struct pci_dev *pdev;
|
|
struct msix_entry *msix_entries;
|
|
void __iomem *reg_base;
|
|
struct ntb_mw mw[NTB_MAX_NUM_MW];
|
|
struct {
|
|
unsigned char max_mw;
|
|
unsigned char max_spads;
|
|
unsigned char max_db_bits;
|
|
unsigned char msix_cnt;
|
|
} limits;
|
|
struct {
|
|
void __iomem *pdb;
|
|
void __iomem *pdb_mask;
|
|
void __iomem *sdb;
|
|
void __iomem *sbar2_xlat;
|
|
void __iomem *sbar4_xlat;
|
|
void __iomem *spad_write;
|
|
void __iomem *spad_read;
|
|
void __iomem *lnk_cntl;
|
|
void __iomem *lnk_stat;
|
|
void __iomem *spci_cmd;
|
|
} reg_ofs;
|
|
struct ntb_transport *ntb_transport;
|
|
void (*event_cb)(void *handle, enum ntb_hw_event event);
|
|
|
|
struct ntb_db_cb *db_cb;
|
|
unsigned char hw_type;
|
|
unsigned char conn_type;
|
|
unsigned char dev_type;
|
|
unsigned char num_msix;
|
|
unsigned char bits_per_vector;
|
|
unsigned char max_cbs;
|
|
unsigned char link_width;
|
|
unsigned char link_speed;
|
|
unsigned char link_status;
|
|
|
|
struct delayed_work hb_timer;
|
|
unsigned long last_ts;
|
|
|
|
struct delayed_work lr_timer;
|
|
|
|
struct dentry *debugfs_dir;
|
|
};
|
|
|
|
/**
|
|
* ntb_max_cbs() - return the max callbacks
|
|
* @ndev: pointer to ntb_device instance
|
|
*
|
|
* Given the ntb pointer, return the maximum number of callbacks
|
|
*
|
|
* RETURNS: the maximum number of callbacks
|
|
*/
|
|
static inline unsigned char ntb_max_cbs(struct ntb_device *ndev)
|
|
{
|
|
return ndev->max_cbs;
|
|
}
|
|
|
|
/**
|
|
* ntb_max_mw() - return the max number of memory windows
|
|
* @ndev: pointer to ntb_device instance
|
|
*
|
|
* Given the ntb pointer, return the maximum number of memory windows
|
|
*
|
|
* RETURNS: the maximum number of memory windows
|
|
*/
|
|
static inline unsigned char ntb_max_mw(struct ntb_device *ndev)
|
|
{
|
|
return ndev->limits.max_mw;
|
|
}
|
|
|
|
/**
|
|
* ntb_hw_link_status() - return the hardware link status
|
|
* @ndev: pointer to ntb_device instance
|
|
*
|
|
* Returns true if the hardware is connected to the remote system
|
|
*
|
|
* RETURNS: true or false based on the hardware link state
|
|
*/
|
|
static inline bool ntb_hw_link_status(struct ntb_device *ndev)
|
|
{
|
|
return ndev->link_status == NTB_LINK_UP;
|
|
}
|
|
|
|
/**
|
|
* ntb_query_pdev() - return the pci_dev pointer
|
|
* @ndev: pointer to ntb_device instance
|
|
*
|
|
* Given the ntb pointer, return the pci_dev pointer for the NTB hardware device
|
|
*
|
|
* RETURNS: a pointer to the ntb pci_dev
|
|
*/
|
|
static inline struct pci_dev *ntb_query_pdev(struct ntb_device *ndev)
|
|
{
|
|
return ndev->pdev;
|
|
}
|
|
|
|
/**
|
|
* ntb_query_debugfs() - return the debugfs pointer
|
|
* @ndev: pointer to ntb_device instance
|
|
*
|
|
* Given the ntb pointer, return the debugfs directory pointer for the NTB
|
|
* hardware device
|
|
*
|
|
* RETURNS: a pointer to the debugfs directory
|
|
*/
|
|
static inline struct dentry *ntb_query_debugfs(struct ntb_device *ndev)
|
|
{
|
|
return ndev->debugfs_dir;
|
|
}
|
|
|
|
struct ntb_device *ntb_register_transport(struct pci_dev *pdev,
|
|
void *transport);
|
|
void ntb_unregister_transport(struct ntb_device *ndev);
|
|
void ntb_set_mw_addr(struct ntb_device *ndev, unsigned int mw, u64 addr);
|
|
int ntb_register_db_callback(struct ntb_device *ndev, unsigned int idx,
|
|
void *data, void (*db_cb_func) (void *data,
|
|
int db_num));
|
|
void ntb_unregister_db_callback(struct ntb_device *ndev, unsigned int idx);
|
|
int ntb_register_event_callback(struct ntb_device *ndev,
|
|
void (*event_cb_func) (void *handle,
|
|
enum ntb_hw_event event));
|
|
void ntb_unregister_event_callback(struct ntb_device *ndev);
|
|
int ntb_get_max_spads(struct ntb_device *ndev);
|
|
int ntb_write_local_spad(struct ntb_device *ndev, unsigned int idx, u32 val);
|
|
int ntb_read_local_spad(struct ntb_device *ndev, unsigned int idx, u32 *val);
|
|
int ntb_write_remote_spad(struct ntb_device *ndev, unsigned int idx, u32 val);
|
|
int ntb_read_remote_spad(struct ntb_device *ndev, unsigned int idx, u32 *val);
|
|
void __iomem *ntb_get_mw_vbase(struct ntb_device *ndev, unsigned int mw);
|
|
resource_size_t ntb_get_mw_size(struct ntb_device *ndev, unsigned int mw);
|
|
void ntb_ring_sdb(struct ntb_device *ndev, unsigned int idx);
|
|
void *ntb_find_transport(struct pci_dev *pdev);
|
|
|
|
int ntb_transport_init(struct pci_dev *pdev);
|
|
void ntb_transport_free(void *transport);
|