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/*
* This file is subject to the terms and conditions of the GNU General Public
* License . See the file " COPYING " in the main directory of this archive
* for more details .
*
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* Copyright ( C ) 2012 Cavium , Inc .
*
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* Copyright ( C ) 2009 Wind River Systems ,
* written by Ralf Baechle < ralf @ linux - mips . org >
*/
# include <linux/module.h>
# include <linux/init.h>
# include <linux/slab.h>
# include <linux/io.h>
# include <linux/edac.h>
# include <asm/octeon/cvmx.h>
# include "edac_module.h"
# define EDAC_MOD_STR "octeon-l2c"
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static void octeon_l2c_poll_oct1 ( struct edac_device_ctl_info * l2c )
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{
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union cvmx_l2t_err l2t_err , l2t_err_reset ;
union cvmx_l2d_err l2d_err , l2d_err_reset ;
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l2t_err_reset . u64 = 0 ;
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l2t_err . u64 = cvmx_read_csr ( CVMX_L2T_ERR ) ;
if ( l2t_err . s . sec_err ) {
edac_device_handle_ce ( l2c , 0 , 0 ,
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" Tag Single bit error (corrected) " ) ;
l2t_err_reset . s . sec_err = 1 ;
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}
if ( l2t_err . s . ded_err ) {
edac_device_handle_ue ( l2c , 0 , 0 ,
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" Tag Double bit error (detected) " ) ;
l2t_err_reset . s . ded_err = 1 ;
}
if ( l2t_err_reset . u64 )
cvmx_write_csr ( CVMX_L2T_ERR , l2t_err_reset . u64 ) ;
l2d_err_reset . u64 = 0 ;
l2d_err . u64 = cvmx_read_csr ( CVMX_L2D_ERR ) ;
if ( l2d_err . s . sec_err ) {
edac_device_handle_ce ( l2c , 0 , 1 ,
" Data Single bit error (corrected) " ) ;
l2d_err_reset . s . sec_err = 1 ;
}
if ( l2d_err . s . ded_err ) {
edac_device_handle_ue ( l2c , 0 , 1 ,
" Data Double bit error (detected) " ) ;
l2d_err_reset . s . ded_err = 1 ;
}
if ( l2d_err_reset . u64 )
cvmx_write_csr ( CVMX_L2D_ERR , l2d_err_reset . u64 ) ;
}
static void _octeon_l2c_poll_oct2 ( struct edac_device_ctl_info * l2c , int tad )
{
union cvmx_l2c_err_tdtx err_tdtx , err_tdtx_reset ;
union cvmx_l2c_err_ttgx err_ttgx , err_ttgx_reset ;
char buf1 [ 64 ] ;
char buf2 [ 80 ] ;
err_tdtx_reset . u64 = 0 ;
err_tdtx . u64 = cvmx_read_csr ( CVMX_L2C_ERR_TDTX ( tad ) ) ;
if ( err_tdtx . s . dbe | | err_tdtx . s . sbe | |
err_tdtx . s . vdbe | | err_tdtx . s . vsbe )
snprintf ( buf1 , sizeof ( buf1 ) ,
" type:%d, syn:0x%x, way:%d " ,
err_tdtx . s . type , err_tdtx . s . syn , err_tdtx . s . wayidx ) ;
if ( err_tdtx . s . dbe ) {
snprintf ( buf2 , sizeof ( buf2 ) ,
" L2D Double bit error (detected):%s " , buf1 ) ;
err_tdtx_reset . s . dbe = 1 ;
edac_device_handle_ue ( l2c , tad , 1 , buf2 ) ;
}
if ( err_tdtx . s . sbe ) {
snprintf ( buf2 , sizeof ( buf2 ) ,
" L2D Single bit error (corrected):%s " , buf1 ) ;
err_tdtx_reset . s . sbe = 1 ;
edac_device_handle_ce ( l2c , tad , 1 , buf2 ) ;
}
if ( err_tdtx . s . vdbe ) {
snprintf ( buf2 , sizeof ( buf2 ) ,
" VBF Double bit error (detected):%s " , buf1 ) ;
err_tdtx_reset . s . vdbe = 1 ;
edac_device_handle_ue ( l2c , tad , 1 , buf2 ) ;
}
if ( err_tdtx . s . vsbe ) {
snprintf ( buf2 , sizeof ( buf2 ) ,
" VBF Single bit error (corrected):%s " , buf1 ) ;
err_tdtx_reset . s . vsbe = 1 ;
edac_device_handle_ce ( l2c , tad , 1 , buf2 ) ;
}
if ( err_tdtx_reset . u64 )
cvmx_write_csr ( CVMX_L2C_ERR_TDTX ( tad ) , err_tdtx_reset . u64 ) ;
err_ttgx_reset . u64 = 0 ;
err_ttgx . u64 = cvmx_read_csr ( CVMX_L2C_ERR_TTGX ( tad ) ) ;
if ( err_ttgx . s . dbe | | err_ttgx . s . sbe )
snprintf ( buf1 , sizeof ( buf1 ) ,
" type:%d, syn:0x%x, way:%d " ,
err_ttgx . s . type , err_ttgx . s . syn , err_ttgx . s . wayidx ) ;
if ( err_ttgx . s . dbe ) {
snprintf ( buf2 , sizeof ( buf2 ) ,
" Tag Double bit error (detected):%s " , buf1 ) ;
err_ttgx_reset . s . dbe = 1 ;
edac_device_handle_ue ( l2c , tad , 0 , buf2 ) ;
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}
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if ( err_ttgx . s . sbe ) {
snprintf ( buf2 , sizeof ( buf2 ) ,
" Tag Single bit error (corrected):%s " , buf1 ) ;
err_ttgx_reset . s . sbe = 1 ;
edac_device_handle_ce ( l2c , tad , 0 , buf2 ) ;
}
if ( err_ttgx_reset . u64 )
cvmx_write_csr ( CVMX_L2C_ERR_TTGX ( tad ) , err_ttgx_reset . u64 ) ;
}
static void octeon_l2c_poll_oct2 ( struct edac_device_ctl_info * l2c )
{
int i ;
for ( i = 0 ; i < l2c - > nr_instances ; i + + )
_octeon_l2c_poll_oct2 ( l2c , i ) ;
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}
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static int octeon_l2c_probe ( struct platform_device * pdev )
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{
struct edac_device_ctl_info * l2c ;
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int num_tads = OCTEON_IS_MODEL ( OCTEON_CN68XX ) ? 4 : 1 ;
/* 'Tags' are block 0, 'Data' is block 1*/
l2c = edac_device_alloc_ctl_info ( 0 , " l2c " , num_tads , " l2c " , 2 , 0 ,
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NULL , 0 , edac_device_alloc_index ( ) ) ;
if ( ! l2c )
return - ENOMEM ;
l2c - > dev = & pdev - > dev ;
platform_set_drvdata ( pdev , l2c ) ;
l2c - > dev_name = dev_name ( & pdev - > dev ) ;
l2c - > mod_name = " octeon-l2c " ;
l2c - > ctl_name = " octeon_l2c_err " ;
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if ( OCTEON_IS_OCTEON1PLUS ( ) ) {
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union cvmx_l2t_err l2t_err ;
union cvmx_l2d_err l2d_err ;
l2t_err . u64 = cvmx_read_csr ( CVMX_L2T_ERR ) ;
l2t_err . s . sec_intena = 0 ; /* We poll */
l2t_err . s . ded_intena = 0 ;
cvmx_write_csr ( CVMX_L2T_ERR , l2t_err . u64 ) ;
l2d_err . u64 = cvmx_read_csr ( CVMX_L2D_ERR ) ;
l2d_err . s . sec_intena = 0 ; /* We poll */
l2d_err . s . ded_intena = 0 ;
cvmx_write_csr ( CVMX_L2T_ERR , l2d_err . u64 ) ;
l2c - > edac_check = octeon_l2c_poll_oct1 ;
} else {
/* OCTEON II */
l2c - > edac_check = octeon_l2c_poll_oct2 ;
}
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if ( edac_device_add_device ( l2c ) > 0 ) {
pr_err ( " %s: edac_device_add_device() failed \n " , __func__ ) ;
goto err ;
}
return 0 ;
err :
edac_device_free_ctl_info ( l2c ) ;
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return - ENXIO ;
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}
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static int octeon_l2c_remove ( struct platform_device * pdev )
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{
struct edac_device_ctl_info * l2c = platform_get_drvdata ( pdev ) ;
edac_device_del_device ( & pdev - > dev ) ;
edac_device_free_ctl_info ( l2c ) ;
return 0 ;
}
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static struct platform_driver octeon_l2c_driver = {
. probe = octeon_l2c_probe ,
. remove = octeon_l2c_remove ,
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. driver = {
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. name = " octeon_l2c_edac " ,
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}
} ;
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module_platform_driver ( octeon_l2c_driver ) ;
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MODULE_LICENSE ( " GPL " ) ;
MODULE_AUTHOR ( " Ralf Baechle <ralf@linux-mips.org> " ) ;