73d4c99d78
This is upgrading code as-is. The build will fail. Signed-off-by: Ying Xie <ying.xie@microsoft.com>
286 lines
8.3 KiB
C
286 lines
8.3 KiB
C
/*
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* Copyright 2017 Broadcom
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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 (the "GPL").
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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 version 2 (GPLv2) for more details.
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*
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* You should have received a copy of the GNU General Public License
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* version 2 (GPLv2) along with this source code.
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*/
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/***********************************************************************
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*
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* $Id: linux-bde.h,v 1.24 Broadcom SDK $
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* $Copyright: (c) 2005 Broadcom Corp.
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* All Rights Reserved.$
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*
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* Linux Broadcom Device Enumerators
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*
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*
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* There are two Linux BDEs:
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*
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* 1. Linux Kernel BDE
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*
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* This is a kernel module implementing a BDE
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* for the driver running as part of the kernel.
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*
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* It manages the devices through the linux PCI interfaces,
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* and manages a chunk of contiguous, boot-time allocated
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* DMA memory. This is all that is needed if the BCM driver
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* is run as part of the kernel (in another module).
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*
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* 2. Linux User BDE
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*
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* This is a kernel module and userland library which implement
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* a complete BDE for applications running in userland.
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*
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* The kernel module relies upon the real kernel bde,
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* and allows a user space application (through the user library)
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* to talk directly to the devices. It also virtualized the device
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* interrupts, so the entire driver can be run as a userspace
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* application.
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*
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* While this causes a significant degradation in performance,
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* because the system runs as a user application, the development
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* and debugging process is about a gillion times easier.
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* After the core logic is debugged, it can be retargeted using
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* only the kernel bde and run in the kernel.
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*
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*
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**********************************************************************/
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#ifndef __LINUX_BDE_H__
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#define __LINUX_BDE_H__
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#include <sal/types.h>
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#include <ibde.h>
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/*
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* Device Major Numbers
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*
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* The kernel and user bdes need unique major numbers
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* on systems that do not use devfs.
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*
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* They are defined here, along with the module names,
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* to document them if you need to mknod them (or open) them,
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* and to keep them unique.
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*
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*/
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#include <linux/version.h>
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#ifdef __KERNEL__
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#include <linux/types.h>
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/* Key stone and Raptor has 2.6.21 but don't have definition */
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#if defined(KEYSTONE) || defined(RAPTOR)
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#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,21))
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#ifdef PHYS_ADDRS_ARE_64BITS
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typedef u64 phys_addr_t;
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#else
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typedef u32 phys_addr_t;
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#endif
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#endif
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#endif
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#endif
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15))
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#define LINUX_BDE_DMA_DEVICE_SUPPORT
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#endif
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#define LINUX_KERNEL_BDE_NAME "linux-kernel-bde"
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#define LINUX_KERNEL_BDE_MAJOR 127
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#define LINUX_USER_BDE_NAME "linux-user-bde"
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#define LINUX_USER_BDE_MAJOR 126
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/* Max devices */
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/* 16 switch chips + 2 out-of-band Ethernet + 2 CPUs */
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#define LINUX_BDE_MAX_SWITCH_DEVICES 16
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#define LINUX_BDE_MAX_ETHER_DEVICES 2
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#define LINUX_BDE_MAX_CPU_DEVICES 2
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#define LINUX_BDE_MAX_DEVICES (LINUX_BDE_MAX_SWITCH_DEVICES + \
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LINUX_BDE_MAX_ETHER_DEVICES + \
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LINUX_BDE_MAX_CPU_DEVICES)
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/*
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* PCI devices will be initialized by the Linux Kernel,
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* regardless of architecture.
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*
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* You need only provide bus endian settings.
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*/
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typedef struct linux_bde_bus_s {
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int be_pio;
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int be_packet;
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int be_other;
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} linux_bde_bus_t;
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/* Device state used for PCI hot swap case. */
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/*
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* BDE_DEV_STATE_NORMAL : A device is probed normally. Or when the device
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* resource has been updated after "CHANGED", the state will move back to
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* "NORMAL".
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*/
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#define BDE_DEV_STATE_NORMAL (0)
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/*
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* BDE_DEV_STATE_REMOVED : A previous probed device was removed.
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* We will avoid any device access while the device is in this state.
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* The state will be moved to "CHANGED" if the device is re-inserted
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* and re-probed.
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*/
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#define BDE_DEV_STATE_REMOVED (1)
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/*
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* BDE_DEV_STATE_CHANGED : The device is re-probed after having been removed.
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* The resouces assigned to the device might have been changed after
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* re-probing, so we need to re-initialize our resource database accordingly.
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* The state will change to "NORMAL" when the resource have been updated.
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*/
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#define BDE_DEV_STATE_CHANGED (2)
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extern int linux_bde_create(linux_bde_bus_t* bus, ibde_t** bde);
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extern int linux_bde_destroy(ibde_t* bde);
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#ifdef BCM_INSTANCE_SUPPORT
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extern int linux_bde_instance_attach(unsigned int dev_mask,unsigned int dma_size);
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#endif
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#ifdef __KERNEL__
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/*
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* Backdoors provided by the kernel bde
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*
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*/
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/*
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* The user bde needs to get cpu physical address for
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* the userland code to mmap.
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* And the second address is bus address, it is either
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* identical to cpu physical address or another address
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* (IOVA) translated by IOMMU.
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*/
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extern int lkbde_get_dma_info(phys_addr_t *cpu_pbase, phys_addr_t *dma_pbase, ssize_t *size);
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extern uint32 lkbde_get_dev_phys(int d);
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extern uint32 lkbde_get_dev_phys_hi(int d);
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/*
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* Virtual device address needed by kernel space
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* interrupt handler.
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*/
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extern void *lkbde_get_dev_virt(int d);
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/*
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* The user bde needs to get some physical addresses for
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* the userland code to mmap. The following functions
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* supports multiple resources for a single device.
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*/
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extern int lkbde_get_dev_resource(int d, int rsrc, uint32 *flags,
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uint32 *phys_lo, uint32 *phys_hi);
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/*
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* Backdoor to retrieve OS device structure to be used for
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* DMA operations.
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*/
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extern void *lkbde_get_dma_dev(int d);
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/*
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* Backdoor to retrieve original hardware/OS device.
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*/
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extern void *lkbde_get_hw_dev(int d);
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/*
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* Backdoor to retrieve number of switch devices probed.
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*/
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extern int lkbde_get_num_devices(int type);
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/*
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* Retrive the device state from Kernel BDE.
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* Used for KNET and User BDE for pci hot swap case.
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*/
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extern int lkbde_dev_state_get(int d, uint32 *state);
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extern int lkbde_dev_state_set(int d, uint32 state);
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/*
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* Retrive the mapping between emulated HW device and instance id
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*/
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extern int lkbde_dev_instid_get(int d, uint32 *instid);
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extern int lkbde_dev_instid_set(int d, uint32 instid);
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/*
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* Functions that allow an interrupt handler in user mode to
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* coexist with interrupt handler in kernel module.
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*/
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extern int lkbde_irq_mask_set(int d, uint32 addr, uint32 mask, uint32 fmask);
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extern int lkbde_irq_mask_get(int d, uint32 *mask, uint32 *fmask);
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#if (defined(BCM_PETRA_SUPPORT) || defined(BCM_DFE_SUPPORT))
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extern int lkbde_cpu_write(int d, uint32 addr, uint32 *buf);
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extern int lkbde_cpu_read(int d, uint32 addr, uint32 *buf);
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extern int lkbde_cpu_pci_register(int d);
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#endif
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/*
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* This flag must be OR'ed onto the device number when calling
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* interrupt_connect/disconnect and irq_mask_set functions from
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* a secondary device driver.
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*/
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#define LKBDE_ISR2_DEV 0x8000
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/*
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* This flag should be OR'ed onto the device number when calling
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* irq_mask_set functions from a secondary device driver if the
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* mask register is iProc register.
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*/
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#define LKBDE_IPROC_REG 0x4000
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#if defined(BCM_PETRA_SUPPORT) || defined(BCM_DFE_SUPPORT)
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#include <linux/version.h>
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#if defined(__DUNE_LINUX_BCM_CPU_PCIE__) && LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
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#ifndef _SIMPLE_MEMORY_ALLOCATION_
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#define _SIMPLE_MEMORY_ALLOCATION_ 1
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#endif
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#ifndef USE_LINUX_BDE_MMAP
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#define USE_LINUX_BDE_MMAP 1
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#endif
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#endif
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#endif
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#if defined(IPROC_CMICD) && defined(CONFIG_CMA)
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#ifndef _SIMPLE_MEMORY_ALLOCATION_
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#define _SIMPLE_MEMORY_ALLOCATION_ 1
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#endif
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#endif
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/* Don't use _SIMPLE_MEMORY_ALLOCATION_ method for newer kernel than 3.10.0 */
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0))
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#ifndef _SIMPLE_MEMORY_ALLOCATION_
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#define _SIMPLE_MEMORY_ALLOCATION_ 0
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#endif
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#endif
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/* Allocation via dma_alloc_coherent is turned off by default */
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#ifndef _SIMPLE_MEMORY_ALLOCATION_
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#define _SIMPLE_MEMORY_ALLOCATION_ 9 /* compile in the allocation method, but do not use it by default */
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#endif
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/* By default we use our private mmap only if /dev/mem mmap has restrictions */
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#ifndef USE_LINUX_BDE_MMAP
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#ifdef CONFIG_STRICT_DEVMEM
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#define USE_LINUX_BDE_MMAP 1
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#else
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#define USE_LINUX_BDE_MMAP 0
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#endif
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#endif
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#endif /* __KERNEL__ */
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#endif /* __LINUX_BDE_H__ */
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