source: trunk/hal/x86_64/drivers/soclib_mmc.c @ 75

Last change on this file since 75 was 75, checked in by max@…, 5 years ago

Create the drivers/ sub-directory in each hal, and move soclib
into it. Note that soclib is not valid for x86_64, but more
changes will come.

File size: 5.3 KB
Line 
1/*
2 * soclib_mmc.c - soclib simple block device driver implementation.
3 *
4 * Author     Alain Greiner (2016)
5 *
6 * Copyright (c) UPMC Sorbonne Universites
7 *
8 * This file is part of ALMOS-MKH..
9 *
10 * ALMOS-MKH. is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; version 2.0 of the License.
13 *
14 * ALMOS-MKH. is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with ALMOS-MKH.; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24
25#include <hal_types.h>
26#include <chdev.h>
27#include <dev_mmc.h>
28#include <soclib_mmc.h>
29#include <spinlock.h>
30#include <thread.h>
31#include <printk.h>
32
33
34///////////////////////////////////////
35void soclib_mmc_init( chdev_t * chdev )
36{
37    // get pointer on MMC segment base
38    uint32_t * base = (uint32_t *)GET_PTR( chdev->base );
39
40    // enable MMC IRQ
41    *(base + (SOCLIB_MMC_ERROR_FUNC << 7) + SOCLIB_MMC_ERROR_IRQ_ENABLE) = 1;
42} 
43
44
45//////////////////////////////////////////////////////////////
46void __attribute__ ((noinline)) soclib_mmc_cmd( xptr_t th_xp )
47{
48    xptr_t     dev_xp;       // extended pointer on MMC device
49    uint32_t   type;         // MMC command : type
50    uint64_t   buf_paddr;    // MMC command : buffer physical address
51    uint32_t   buf_size;     // MMC command : buffer size
52    uint32_t   reg_index;    // MMC command : register index in MMC peripheral
53    uint32_t * reg_ptr;      // MMC command : pointer on dst/src buffer in client cluster
54
55    // get client thread cluster and local pointer
56    cxy_t      th_cxy = GET_CXY( th_xp );
57    thread_t * th_ptr = (thread_t *)GET_PTR( th_xp );
58
59    // get command type and extended pointer on MMC device
60    type   =         hal_remote_lw ( XPTR( th_cxy , &th_ptr->command.mmc.type   ) );
61    dev_xp = (xptr_t)hal_remote_lwd( XPTR( th_cxy , &th_ptr->command.mmc.dev_xp ) );
62
63    // get MMC device cluster and local pointer
64    cxy_t     dev_cxy = GET_CXY( dev_xp );
65    chdev_t * dev_ptr = (chdev_t *)GET_PTR( dev_xp );
66
67    // get extended pointer on SOCLIB-MMC peripheral
68    xptr_t     mmc_xp = hal_remote_lw( XPTR( dev_cxy , &dev_ptr->base ) );
69
70    // get SOCLIB_MMC peripheral cluster and local pointer
71    cxy_t      mmc_cxy = GET_CXY( mmc_xp );
72    uint32_t * mmc_ptr = (uint32_t *)GET_PTR( mmc_xp );
73
74    if( (type == MMC_CC_INVAL) || (type == MMC_CC_SYNC) )
75    {
76        // get buffer paddr
77        buf_paddr = hal_remote_lwd( XPTR( th_cxy , &th_ptr->command.mmc.buf_paddr ) );
78
79        // split buffer paddr in two 32 bits words
80        uint32_t   buf_lo = (uint32_t)( buf_paddr );
81        uint32_t   buf_hi = (uint32_t)( buf_paddr>>32 );
82
83        // get buffer size
84        buf_size   = hal_remote_lw( XPTR( th_cxy , &th_ptr->command.mmc.buf_size ) );
85
86        // get command type
87        uint32_t cc_cmd;
88        if( type == MMC_CC_INVAL )  cc_cmd = SOCLIB_MMC_CC_INVAL;
89        else                        cc_cmd = SOCLIB_MMC_CC_SYNC; 
90
91        // set SOCLIB_MMC registers to start INVAL/SYNC operation
92        hal_remote_sw( XPTR( mmc_cxy , mmc_ptr + SOCLIB_MMC_ADDR_LO    ) , buf_lo );
93        hal_remote_sw( XPTR( mmc_cxy , mmc_ptr + SOCLIB_MMC_ADDR_HI    ) , buf_hi );
94        hal_remote_sw( XPTR( mmc_cxy , mmc_ptr + SOCLIB_MMC_BUF_LENGTH ) , buf_size ); 
95        hal_remote_sw( XPTR( mmc_cxy , mmc_ptr + SOCLIB_MMC_CMD_TYPE   ) , cc_cmd ); 
96    }
97    else  // (type == MMC_GET_ERROR) or (type == MMC_GET_ERROR) pr (type == MMC_GET_INSTRU )
98    {
99        // get src/dst buffer local pointer and register index
100        reg_ptr   = (uint32_t *)hal_remote_lpt( XPTR( th_cxy , &th_ptr->command.mmc.reg_ptr ) );
101        reg_index = hal_remote_lw( XPTR( th_cxy , &th_ptr->command.mmc.reg_index ) );
102
103        // move register to/from local buffer
104        if( (type == MMC_GET_ERROR) || (type == MMC_GET_INSTRU) )
105        {
106            *reg_ptr =  hal_remote_lw( XPTR( mmc_cxy , mmc_ptr + reg_index ) );
107        }
108        else  // type == MMC_SET_ERROR
109        {
110            hal_remote_sw( XPTR( mmc_cxy , mmc_ptr + reg_index ) , *reg_ptr );
111        }
112    }
113} // end soclib_mmc_cmd()
114
115
116////////////////////////////////////////////////////////////////
117void __attribute__ ((noinline)) soclib_mmc_isr( chdev_t * chdev )
118{
119    // get pointer on MMC segment base
120    uint32_t * base = (uint32_t *)GET_PTR( chdev->base );
121
122    // get faulty ADDRESS and SRCID from MMC registers
123    uint32_t paddr_lo = *(base + (SOCLIB_MMC_ERROR_FUNC << 7) + SOCLIB_MMC_ERROR_ADDR_LO);
124    uint32_t paddr_hi = *(base + (SOCLIB_MMC_ERROR_FUNC << 7) + SOCLIB_MMC_ERROR_ADDR_HI);
125    uint32_t srcid    = *(base + (SOCLIB_MMC_ERROR_FUNC << 7) + SOCLIB_MMC_ERROR_SRCID);
126
127    paddr_t paddr = (((paddr_t)paddr_hi)<<32) + ((paddr_t)paddr_lo);
128   
129    // reset MMC IRQ
130    *(base + (SOCLIB_MMC_ERROR_FUNC << 7) + SOCLIB_MMC_ERROR_IRQ_RESET) = 0;
131   
132    // print an error message on kernel terminal TODO : should be improved
133    printk("\n[ERROR] reported from MMC in cluster %x : faulty address = %l / srcid = %x\n",
134           paddr , srcid );
135
136} // end soclib_mmc_isr()
137
138
139
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