| 1 | /* $Id: misc.c,v 1.1.1.1 2003/07/02 13:57:02 eleph Exp $ */
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| 2 | /*
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| 3 | * OS/2 implementation of misc. Linux kernel services
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| 4 | *
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| 5 | * (C) 2000-2002 InnoTek Systemberatung GmbH
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| 6 | * (C) 2000-2001 Sander van Leeuwen (sandervl@xs4all.nl)
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| 7 | *
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| 8 | * hweight32 based on Linux code (bitops.h)
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| 9 | *
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| 10 | * This program is free software; you can redistribute it and/or
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| 11 | * modify it under the terms of the GNU General Public License as
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| 12 | * published by the Free Software Foundation; either version 2 of
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| 13 | * the License, or (at your option) any later version.
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| 14 | *
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| 15 | * This program is distributed in the hope that it will be useful,
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| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 18 | * GNU General Public License for more details.
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| 19 | *
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| 20 | * You should have received a copy of the GNU General Public
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| 21 | * License along with this program; if not, write to the Free
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| 22 | * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
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| 23 | * USA.
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| 24 | *
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| 25 | */
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| 26 | #include <limits.h>
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| 27 | #include "linux.h"
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| 28 | #include <linux/init.h>
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| 29 | #include <linux/fs.h>
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| 30 | #include <linux/poll.h>
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| 31 | #define CONFIG_PROC_FS
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| 32 | #include <linux/proc_fs.h>
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| 33 | #include <asm/uaccess.h>
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| 34 | #include <asm/hardirq.h>
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| 35 | #include <linux\ioport.h>
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| 36 | #include <linux\utsname.h>
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| 37 | #include <linux\module.h>
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| 38 | #include <linux/workqueue.h>
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| 39 | #include <linux/firmware.h>
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| 40 | #include <dbgos2.h>
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| 41 | #include <printfos2.h>
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| 42 |
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| 43 | struct new_utsname system_utsname = {0};
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| 44 | struct resource ioport_resource = {NULL, 0, 0, IORESOURCE_IO, NULL, NULL, NULL};
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| 45 | struct resource iomem_resource = {NULL, 0, 0, IORESOURCE_MEM, NULL, NULL, NULL};
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| 46 | mem_map_t *mem_map = 0;
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| 47 | int this_module[64] = {0};
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| 48 |
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| 49 | #include <stdarg.h>
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| 50 |
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| 51 | char szLastALSAError1[128] = {0};
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| 52 | char szOverrunTest1 = 0xCC;
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| 53 | char szLastALSAError2[128] = {0};
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| 54 | char szOverrunTest2 = 0xCC;
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| 55 | int iLastError = 0;
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| 56 |
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| 57 | //******************************************************************************
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| 58 | //Save error message in szLastALSAError; if card init failed, then we will
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| 59 | //print it in drv32\init.cpp
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| 60 | //******************************************************************************
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| 61 | int printk(const char * fmt, ...)
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| 62 | {
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| 63 | va_list argptr; /* -> variable argument list */
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| 64 |
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| 65 | char *pszLastALSAError;
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| 66 |
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| 67 | pszLastALSAError= iLastError ? szLastALSAError2 : szLastALSAError1;
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| 68 |
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| 69 | va_start(argptr, fmt); /* get pointer to argument list */
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| 70 | vsprintf(pszLastALSAError, fmt, argptr);
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| 71 | // strcat(pszLastALSAError, "\r");
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| 72 | va_end(argptr); /* done with variable arguments */
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| 73 |
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| 74 | if(szOverrunTest1 != 0xCC || szOverrunTest2 != 0xCC) {
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| 75 | DebugInt3();
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| 76 | }
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| 77 |
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| 78 | dprintf( (pszLastALSAError) );
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| 79 | if(++iLastError > 1) {
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| 80 | iLastError = 0;
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| 81 | }
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| 82 | return 0;
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| 83 | }
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| 84 | //******************************************************************************
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| 85 | //******************************************************************************
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| 86 | void schedule(void)
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| 87 | {
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| 88 |
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| 89 | }
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| 90 | //******************************************************************************
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| 91 | //******************************************************************************
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| 92 | void poll_wait(struct file * filp, wait_queue_head_t * wait_address, poll_table *p)
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| 93 | {
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| 94 |
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| 95 | }
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| 96 | //******************************************************************************
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| 97 | //******************************************************************************
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| 98 | int __check_region(struct resource *a, unsigned long b, unsigned long c)
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| 99 | {
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| 100 | DebugInt3();
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| 101 | return 0;
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| 102 | }
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| 103 |
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| 104 | /* --------------------------------------------------------------------- */
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| 105 | /*
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| 106 | * hweightN: returns the hamming weight (i.e. the number
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| 107 | * of bits set) of a N-bit word
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| 108 | */
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| 109 |
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| 110 | #ifdef hweight32
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| 111 | #undef hweight32
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| 112 | #endif
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| 113 |
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| 114 | unsigned int hweight32(unsigned int w)
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| 115 | {
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| 116 | unsigned int res = (w & 0x55555555) + ((w >> 1) & 0x55555555);
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| 117 | res = (res & 0x33333333) + ((res >> 2) & 0x33333333);
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| 118 | res = (res & 0x0F0F0F0F) + ((res >> 4) & 0x0F0F0F0F);
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| 119 | res = (res & 0x00FF00FF) + ((res >> 8) & 0x00FF00FF);
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| 120 | return (res & 0x0000FFFF) + ((res >> 16) & 0x0000FFFF);
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| 121 | }
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| 122 | //******************************************************************************
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| 123 | //******************************************************************************
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| 124 | #if 0
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| 125 | mem_map_t *virt_to_page(int x)
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| 126 | {
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| 127 | static mem_map_t map = {0};
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| 128 | return ↦
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| 129 | }
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| 130 | #endif
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| 131 | //******************************************************************************
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| 132 | //******************************************************************************
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| 133 | struct proc_dir_entry proc_root = {0};
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| 134 | //******************************************************************************
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| 135 | //******************************************************************************
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| 136 | struct proc_dir_entry *create_proc_entry(const char *name, mode_t mode,
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| 137 | struct proc_dir_entry *parent)
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| 138 | {
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| 139 | struct proc_dir_entry *proc;
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| 140 | proc = (struct proc_dir_entry *)kmalloc(sizeof(struct proc_dir_entry), 0);
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| 141 | memset(proc, 0, sizeof(struct proc_dir_entry));
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| 142 |
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| 143 | proc->name = name;
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| 144 | proc->mode = mode;
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| 145 | proc->parent = parent;
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| 146 |
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| 147 | return proc;
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| 148 | }
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| 149 | //******************************************************************************
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| 150 | //******************************************************************************
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| 151 | void remove_proc_entry(const char *name, struct proc_dir_entry *parent)
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| 152 | {
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| 153 | return; //memory leak
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| 154 | }
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| 155 | //******************************************************************************
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| 156 | //******************************************************************************
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| 157 | int proc_register(struct proc_dir_entry *parent, struct proc_dir_entry *proc)
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| 158 | {
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| 159 | return 0;
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| 160 | }
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| 161 | //******************************************************************************
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| 162 | //******************************************************************************
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| 163 | int proc_unregister(struct proc_dir_entry *proc, int bla)
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| 164 | {
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| 165 | return 0;
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| 166 | }
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| 167 | //******************************************************************************
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| 168 | //******************************************************************************
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| 169 | int fasync_helper(int a, struct file *b, int c, struct fasync_struct **d)
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| 170 | {
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| 171 | return 0;
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| 172 | }
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| 173 | //******************************************************************************
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| 174 | //******************************************************************************
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| 175 | void kill_fasync(struct fasync_struct *a, int b, int c)
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| 176 | {
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| 177 | }
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| 178 | //******************************************************************************
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| 179 | //******************************************************************************
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| 180 | int request_dma(unsigned int dmanr, const char * device_id) /* reserve a DMA channel */
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| 181 | {
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| 182 | DebugInt3();
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| 183 | return 0;
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| 184 | }
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| 185 | //******************************************************************************
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| 186 | //******************************************************************************
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| 187 | void free_dma(unsigned int dmanr)
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| 188 | {
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| 189 | DebugInt3();
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| 190 | }
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| 191 | //******************************************************************************
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| 192 | /* enable/disable a specific DMA channel */
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| 193 | //******************************************************************************
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| 194 | void enable_dma(unsigned int dmanr)
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| 195 | {
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| 196 | DebugInt3();
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| 197 | }
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| 198 | //******************************************************************************
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| 199 | //******************************************************************************
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| 200 | void disable_dma(unsigned int dmanr)
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| 201 | {
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| 202 | DebugInt3();
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| 203 | }
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| 204 | //******************************************************************************
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| 205 | static struct notifier_block *reboot_notify_list = NULL;
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| 206 | // No need to implement this right now. The ESS Maestro 3 driver uses it
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| 207 | // to call pci_unregister_driver, which is always called from the shutdown
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| 208 | // notification sent by OS2.
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| 209 | // Same goes for es1968 & Yamaha's DS1/DS1E.
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| 210 | //******************************************************************************
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| 211 | int register_reboot_notifier(struct notifier_block *pnblock)
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| 212 | {
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| 213 | return 0;
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| 214 | }
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| 215 | //******************************************************************************
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| 216 | //******************************************************************************
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| 217 | int unregister_reboot_notifier(struct notifier_block *pnblock)
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| 218 | {
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| 219 | return 0;
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| 220 | }
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| 221 | //******************************************************************************
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| 222 | //******************************************************************************
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| 223 | static void __x_queue_work(struct workqueue_struct *wq, struct work_struct *work)
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| 224 | {
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| 225 | unsigned long flags;
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| 226 |
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| 227 | spin_lock_irqsave(&wq->lock, flags);
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| 228 | work->wq_data = wq;
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| 229 | list_add_tail(&work->entry, &wq->worklist);
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| 230 | wake_up(&wq->more_work);
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| 231 | spin_unlock_irqrestore(&wq->lock, flags);
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| 232 | }
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| 233 | //******************************************************************************
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| 234 | //******************************************************************************
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| 235 | int queue_work(struct workqueue_struct *wq, struct work_struct *work)
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| 236 | {
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| 237 | if (!test_and_set_bit(0, &work->pending)) {
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| 238 | __x_queue_work(wq, work);
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| 239 | return 1;
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| 240 | }
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| 241 | return 0;
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| 242 | }
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| 243 | //******************************************************************************
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| 244 | //******************************************************************************
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| 245 | static void run_workqueue(struct workqueue_struct *wq)
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| 246 | {
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| 247 | unsigned long flags;
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| 248 |
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| 249 | spin_lock_irqsave(&wq->lock, flags);
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| 250 | while (!list_empty(&wq->worklist)) {
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| 251 | struct work_struct *work = list_entry(wq->worklist.next,
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| 252 | struct work_struct, entry);
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| 253 | void (*f) (void *) = work->func;
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| 254 | void *data = work->data;
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| 255 |
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| 256 | list_del_init(wq->worklist.next);
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| 257 | spin_unlock_irqrestore(&wq->lock, flags);
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| 258 | clear_bit(0, &work->pending);
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| 259 | f(data);
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| 260 | spin_lock_irqsave(&wq->lock, flags);
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| 261 | wake_up(&wq->work_done);
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| 262 | }
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| 263 | spin_unlock_irqrestore(&wq->lock, flags);
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| 264 | }
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| 265 | //******************************************************************************
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| 266 | //******************************************************************************
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| 267 | void flush_workqueue(struct workqueue_struct *wq)
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| 268 | {
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| 269 | if (wq->task == current) {
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| 270 | run_workqueue(wq);
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| 271 | } else {
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| 272 | wait_queue_t wait;
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| 273 |
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| 274 | init_waitqueue_entry(&wait, current);
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| 275 | set_current_state(TASK_UNINTERRUPTIBLE);
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| 276 | spin_lock_irq(&wq->lock);
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| 277 | add_wait_queue(&wq->work_done, &wait);
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| 278 | while (!list_empty(&wq->worklist)) {
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| 279 | spin_unlock_irq(&wq->lock);
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| 280 | schedule();
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| 281 | spin_lock_irq(&wq->lock);
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| 282 | }
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| 283 | set_current_state(TASK_RUNNING);
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| 284 | remove_wait_queue(&wq->work_done, &wait);
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| 285 | spin_unlock_irq(&wq->lock);
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| 286 | }
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| 287 | }
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| 288 | //******************************************************************************
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| 289 | //******************************************************************************
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| 290 | struct workqueue_struct *create_workqueue(const char *name)
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| 291 | {
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| 292 | struct workqueue_struct *wq;
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| 293 |
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| 294 | BUG_ON(strlen(name) > 10);
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| 295 |
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| 296 | wq = kmalloc(sizeof(*wq), GFP_KERNEL);
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| 297 | if (!wq)
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| 298 | return NULL;
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| 299 | memset(wq, 0, sizeof(*wq));
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| 300 |
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| 301 | spin_lock_init(&wq->lock);
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| 302 | INIT_LIST_HEAD(&wq->worklist);
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| 303 | init_waitqueue_head(&wq->more_work);
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| 304 | init_waitqueue_head(&wq->work_done);
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| 305 | #ifndef TARGET_OS2
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| 306 | init_completion(&wq->thread_exited);
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| 307 | wq->name = name;
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| 308 | wq->task_pid = kernel_thread(xworker_thread, wq, 0);
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| 309 | if (wq->task_pid < 0) {
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| 310 | printk(KERN_ERR "snd: failed to start thread %s\n", name);
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| 311 | snd_compat_destroy_workqueue(wq);
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| 312 | wq = NULL;
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| 313 | }
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| 314 | wq->task = find_task_by_pid(wq->task_pid);
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| 315 | #endif
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| 316 | return wq;
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| 317 | }
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| 318 | //******************************************************************************
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| 319 | //******************************************************************************
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| 320 | void destroy_workqueue(struct workqueue_struct *wq)
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| 321 | {
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| 322 | #ifndef TARGET_OS2
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| 323 | snd_compat_flush_workqueue(wq);
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| 324 | kill_proc(wq->task_pid, SIGKILL, 1);
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| 325 | if (wq->task_pid >= 0)
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| 326 | wait_for_completion(&wq->thread_exited);
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| 327 | #endif
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| 328 | kfree(wq);
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| 329 | }
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| 330 |
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| 331 | //******************************************************************************
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| 332 | //******************************************************************************
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| 333 | char *kstrdup(const char *s, unsigned int __nocast gfp_flags)
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| 334 | {
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| 335 | int len;
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| 336 | char *buf;
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| 337 |
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| 338 | if (!s) return NULL;
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| 339 |
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| 340 | len = strlen(s) + 1;
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| 341 | buf = kmalloc(len, gfp_flags);
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| 342 | if (buf)
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| 343 | memcpy(buf, s, len);
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| 344 | return buf;
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| 345 | }
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| 346 | //******************************************************************************
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| 347 | //******************************************************************************
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| 348 | int mod_firmware_load(const char *fn, char **fp)
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| 349 | {
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| 350 | return 0;
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| 351 | }
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| 352 | //******************************************************************************
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| 353 | //******************************************************************************
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| 354 | static int snd_try_load_firmware(const char *path, const char *name,
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| 355 | struct firmware *firmware)
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| 356 | {
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| 357 | char filename[30 + FIRMWARE_NAME_MAX];
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| 358 |
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| 359 | sprintf(filename, "%s/%s", path, name);
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| 360 | firmware->size = mod_firmware_load(filename, (char **)&firmware->data);
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| 361 | if (firmware->size)
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| 362 | printk(KERN_INFO "Loaded '%s'.", filename);
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| 363 | return firmware->size;
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| 364 | }
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| 365 | //******************************************************************************
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| 366 | //******************************************************************************
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| 367 | int request_firmware(const struct firmware **fw, const char *name,
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| 368 | struct device *device)
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| 369 | {
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| 370 | struct firmware *firmware;
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| 371 |
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| 372 | *fw = NULL;
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| 373 | firmware = kmalloc(sizeof *firmware, GFP_KERNEL);
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| 374 | if (!firmware)
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| 375 | return -ENOMEM;
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| 376 | if (!snd_try_load_firmware("/lib/firmware", name, firmware) &&
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| 377 | !snd_try_load_firmware("/lib/hotplug/firmware", name, firmware) &&
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| 378 | !snd_try_load_firmware("/usr/lib/hotplug/firmware", name, firmware)) {
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| 379 | kfree(firmware);
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| 380 | return -EIO;
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| 381 | }
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| 382 | *fw = firmware;
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| 383 | return 0;
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| 384 | }
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| 385 | //******************************************************************************
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| 386 | //******************************************************************************
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| 387 | void release_firmware(const struct firmware *fw)
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| 388 | {
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| 389 | if (fw) {
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| 390 | vfree(fw->data);
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| 391 | kfree(fw);
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| 392 | }
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| 393 | }
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| 394 | //******************************************************************************
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| 395 | //******************************************************************************
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| 396 | void *memdup_user(void __user *src, size_t len)
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| 397 | {
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| 398 | void *p = kmalloc(len, GFP_KERNEL);
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| 399 | if (!p)
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| 400 | return ERR_PTR(-ENOMEM);
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| 401 | if (copy_from_user(p, src, len)) {
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| 402 | kfree(p);
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| 403 | return ERR_PTR(-EFAULT);
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| 404 | }
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| 405 | return p;
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| 406 | }
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| 407 | //******************************************************************************
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| 408 | //******************************************************************************
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| 409 | #define del_timer_sync(t) del_timer(t) /* FIXME: not quite correct on SMP */
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| 410 | int cancel_delayed_work(struct delayed_work *dwork)
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| 411 | {
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| 412 | struct work_struct *work = &dwork->work;
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| 413 | int ret;
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| 414 |
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| 415 | ret = del_timer_sync(&work->timer);
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| 416 | if (ret)
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| 417 | clear_bit(0, &work->pending);
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| 418 | return ret;
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| 419 | }
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| 420 | //******************************************************************************
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| 421 | //******************************************************************************
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| 422 | int schedule_work(struct work_struct *works)
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| 423 | {
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| 424 | #ifndef TARGET_OS2
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| 425 | return kernel_thread(work_caller, works, 0) >= 0;
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| 426 | #else
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| 427 | return 1;
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| 428 | #endif
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| 429 | }
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| 430 | //******************************************************************************
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| 431 | //******************************************************************************
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| 432 | static void delayed_work_timer_fn(unsigned long __data)
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| 433 | {
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| 434 | struct work_struct *work = (struct work_struct *)__data;
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| 435 | struct workqueue_struct *wq = work->wq_data;
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| 436 |
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| 437 | if (wq)
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| 438 | __x_queue_work(wq, work);
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| 439 | else
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| 440 | schedule_work(work);
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| 441 | }
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| 442 | //******************************************************************************
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| 443 | //******************************************************************************
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| 444 | int queue_delayed_work(struct workqueue_struct *wq, struct delayed_work *dwork, unsigned long delay)
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| 445 | {
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| 446 | struct work_struct *work = &dwork->work;
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| 447 | struct timer_list *timer = &work->timer;
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| 448 |
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| 449 | if (!test_and_set_bit(0, &work->pending)) {
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| 450 | work->wq_data = wq;
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| 451 | timer->expires = jiffies + delay;
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| 452 | timer->data = (unsigned long)work;
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| 453 | timer->function = delayed_work_timer_fn;
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| 454 | add_timer(timer);
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| 455 | return 1;
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| 456 | }
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| 457 | return 0;
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| 458 | }
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| 459 | //******************************************************************************
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| 460 | //******************************************************************************
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| 461 | /* Greatest common divisor */
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| 462 | unsigned long gcd(unsigned long a, unsigned long b)
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| 463 | {
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| 464 | unsigned long r;
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| 465 | if (a < b) {
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| 466 | r = a;
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| 467 | a = b;
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| 468 | b = r;
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| 469 | }
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| 470 | while ((r = a % b) != 0) {
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| 471 | a = b;
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| 472 | b = r;
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| 473 | }
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| 474 | return b;
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| 475 | }
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| 476 |
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| 477 | //******************************************************************************
|
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| 478 | //******************************************************************************
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| 479 | int strict_strtoul(const char *cp, unsigned int base, unsigned long *res)
|
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| 480 | {
|
|---|
| 481 | char *tail;
|
|---|
| 482 | unsigned long val;
|
|---|
| 483 | size_t len;
|
|---|
| 484 |
|
|---|
| 485 | *res = 0;
|
|---|
| 486 | len = strlen(cp);
|
|---|
| 487 | if (len == 0)
|
|---|
| 488 | return -EINVAL;
|
|---|
| 489 |
|
|---|
| 490 | val = simple_strtoul(cp, &tail, base);
|
|---|
| 491 | if (tail == cp)
|
|---|
| 492 | return -EINVAL;
|
|---|
| 493 |
|
|---|
| 494 | if ((*tail == '\0') ||
|
|---|
| 495 | ((len == (size_t)(tail - cp) + 1) && (*tail == '\n'))) {
|
|---|
| 496 | *res = val;
|
|---|
| 497 | return 0;
|
|---|
| 498 | }
|
|---|
| 499 |
|
|---|
| 500 | return -EINVAL;
|
|---|
| 501 | }
|
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