Changeset 626 for trunk/hal/generic


Ignore:
Timestamp:
Apr 29, 2019, 7:25:09 PM (3 years ago)
Author:
alain
Message:

This version has been tested on the sort multithreaded application
for TSAR_IOB architectures ranging from 1 to 8 clusters.
It fixes three bigs bugs:
1) the dev_ioc device API has been modified: the dev_ioc_sync_read()
and dev_ioc_sync_write() function use now extended pointers on the
kernel buffer to access a mapper stored in any cluster.
2) the hal_uspace API has been modified: the hal_copy_to_uspace()
and hal_copy_from_uspace() functions use now a (cxy,ptr) couple
to identify the target buffer (equivalent to an extended pointer.
3) an implementation bug has been fixed in the assembly code contained
in the hal_copy_to_uspace() and hal_copy_from_uspace() functions.

File:
1 edited

Legend:

Unmodified
Added
Removed
  • trunk/hal/generic/hal_uspace.h

    r570 r626  
    22 * hal_uspace.h - Generic User Space Access API definition
    33 *
    4  * Authors    Alain Greiner (2016,2017)
     4 * Authors    Alain Greiner (2016,2017,2018,2019)
    55 *
    66 * Copyright (c)  UPMC Sorbonne Universites
     
    3838
    3939/*****************************************************************************************
    40  * This function tranfers a data buffer from the user space to the kernel space.
    41  * If the kernel uses physical addresses, it activates the MMU to access the user buffer.
     40 * This function tranfers a data buffer in user space to a kernel buffer
     41 * that can be located in any cluster.
    4242 *****************************************************************************************
    43  * @ k_dst     : destination address in kernel space.
     43 * @ k_cxy     : cluster identifier for kernel destination buffer.
     44 * @ k_dst     : local pointer on kernel destination buffer.
    4445 * @ u_src     : source buffer address in user space.
    4546 * @ size      : size (number of bytes).
    4647 ****************************************************************************************/
    47 extern void hal_copy_from_uspace( void     * k_dst,
     48extern void hal_copy_from_uspace( cxy_t      k_cxy,
     49                                  void     * k_dst,
    4850                                  void     * u_src,
    4951                                  uint32_t   size );
    5052
    5153/*****************************************************************************************
    52  * This function tranfers a data buffer from the kernel space to the user space.
    53  * If the kernel uses physical addresses, it activates the MMU to access the user buffer.
     54 * This function tranfers a kernel buffer that can be located in any cluster
     55 * to a data buffer in the user space.
    5456 *****************************************************************************************
     57 * @ k_cxy     : cluster identifier for kernel source buffer.
     58 * @ k_src     : local pointer on kernel source buffer.
    5559 * @ u_dst     : destination buffer address in user space.
    56  * @ k_src     : source address in kernel space.
    5760 * @ size      : size (number of bytes).
    5861 ****************************************************************************************/
    59 extern void hal_copy_to_uspace( void     * u_dst,
     62extern void hal_copy_to_uspace( cxy_t      k_cxy,
    6063                                void     * k_src,
     64                                void     * u_dst,
    6165                                uint32_t   size );
    6266
Note: See TracChangeset for help on using the changeset viewer.