 8c43a6f05d
			
		
	
	
		8c43a6f05d
		
	
	
	
	
		
			
			Since 39bffca2030950ef6efe57c2fac8327a45ae1015 (qdev: register all types natively through QEMU Object Model), TypeInfo as used in the common, non-iterative pattern is no longer amended with information and should therefore be const. Fix the documented QOM examples: sed -i 's/static TypeInfo/static const TypeInfo/g' include/qom/object.h Since frequently the wrong examples are being copied by contributors of new devices, fix all types in the tree: sed -i 's/^static TypeInfo/static const TypeInfo/g' */*.c sed -i 's/^static TypeInfo/static const TypeInfo/g' */*/*.c This also avoids to piggy-back these changes onto real functional changes or other refactorings. Signed-off-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
		
			
				
	
	
		
			698 lines
		
	
	
		
			20 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			698 lines
		
	
	
		
			20 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /*
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|  * QEMU Crystal CS4231 audio chip emulation
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|  *
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|  * Copyright (c) 2006 Fabrice Bellard
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|  *
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|  * Permission is hereby granted, free of charge, to any person obtaining a copy
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|  * of this software and associated documentation files (the "Software"), to deal
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|  * in the Software without restriction, including without limitation the rights
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|  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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|  * copies of the Software, and to permit persons to whom the Software is
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|  * furnished to do so, subject to the following conditions:
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|  *
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|  * The above copyright notice and this permission notice shall be included in
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|  * all copies or substantial portions of the Software.
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|  *
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|  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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|  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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|  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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|  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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|  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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|  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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|  * THE SOFTWARE.
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|  */
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| #include "hw.h"
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| #include "audiodev.h"
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| #include "audio/audio.h"
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| #include "isa.h"
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| #include "qdev.h"
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| #include "qemu/timer.h"
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| 
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| /*
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|   Missing features:
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|   ADC
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|   Loopback
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|   Timer
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|   ADPCM
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|   More...
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| */
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| 
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| /* #define DEBUG */
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| /* #define DEBUG_XLAW */
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| 
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| static struct {
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|     int aci_counter;
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| } conf = {1};
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| 
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| #ifdef DEBUG
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| #define dolog(...) AUD_log ("cs4231a", __VA_ARGS__)
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| #else
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| #define dolog(...)
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| #endif
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| 
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| #define lwarn(...) AUD_log ("cs4231a", "warning: " __VA_ARGS__)
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| #define lerr(...) AUD_log ("cs4231a", "error: " __VA_ARGS__)
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| 
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| #define CS_REGS 16
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| #define CS_DREGS 32
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| 
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| typedef struct CSState {
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|     ISADevice dev;
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|     QEMUSoundCard card;
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|     MemoryRegion ioports;
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|     qemu_irq pic;
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|     uint32_t regs[CS_REGS];
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|     uint8_t dregs[CS_DREGS];
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|     uint32_t irq;
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|     uint32_t dma;
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|     uint32_t port;
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|     int shift;
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|     int dma_running;
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|     int audio_free;
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|     int transferred;
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|     int aci_counter;
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|     SWVoiceOut *voice;
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|     int16_t *tab;
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| } CSState;
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| 
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| #define MODE2 (1 << 6)
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| #define MCE (1 << 6)
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| #define PMCE (1 << 4)
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| #define CMCE (1 << 5)
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| #define TE (1 << 6)
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| #define PEN (1 << 0)
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| #define INT (1 << 0)
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| #define IEN (1 << 1)
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| #define PPIO (1 << 6)
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| #define PI (1 << 4)
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| #define CI (1 << 5)
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| #define TI (1 << 6)
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| 
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| enum {
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|     Index_Address,
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|     Index_Data,
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|     Status,
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|     PIO_Data
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| };
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| 
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| enum {
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|     Left_ADC_Input_Control,
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|     Right_ADC_Input_Control,
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|     Left_AUX1_Input_Control,
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|     Right_AUX1_Input_Control,
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|     Left_AUX2_Input_Control,
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|     Right_AUX2_Input_Control,
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|     Left_DAC_Output_Control,
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|     Right_DAC_Output_Control,
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|     FS_And_Playback_Data_Format,
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|     Interface_Configuration,
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|     Pin_Control,
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|     Error_Status_And_Initialization,
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|     MODE_And_ID,
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|     Loopback_Control,
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|     Playback_Upper_Base_Count,
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|     Playback_Lower_Base_Count,
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|     Alternate_Feature_Enable_I,
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|     Alternate_Feature_Enable_II,
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|     Left_Line_Input_Control,
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|     Right_Line_Input_Control,
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|     Timer_Low_Base,
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|     Timer_High_Base,
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|     RESERVED,
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|     Alternate_Feature_Enable_III,
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|     Alternate_Feature_Status,
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|     Version_Chip_ID,
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|     Mono_Input_And_Output_Control,
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|     RESERVED_2,
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|     Capture_Data_Format,
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|     RESERVED_3,
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|     Capture_Upper_Base_Count,
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|     Capture_Lower_Base_Count
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| };
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| 
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| static int freqs[2][8] = {
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|     { 8000, 16000, 27420, 32000,    -1,    -1, 48000, 9000 },
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|     { 5510, 11025, 18900, 22050, 37800, 44100, 33075, 6620 }
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| };
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| 
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| /* Tables courtesy http://hazelware.luggle.com/tutorials/mulawcompression.html */
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| static int16_t MuLawDecompressTable[256] =
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| {
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|      -32124,-31100,-30076,-29052,-28028,-27004,-25980,-24956,
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|      -23932,-22908,-21884,-20860,-19836,-18812,-17788,-16764,
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|      -15996,-15484,-14972,-14460,-13948,-13436,-12924,-12412,
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|      -11900,-11388,-10876,-10364, -9852, -9340, -8828, -8316,
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|       -7932, -7676, -7420, -7164, -6908, -6652, -6396, -6140,
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|       -5884, -5628, -5372, -5116, -4860, -4604, -4348, -4092,
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|       -3900, -3772, -3644, -3516, -3388, -3260, -3132, -3004,
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|       -2876, -2748, -2620, -2492, -2364, -2236, -2108, -1980,
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|       -1884, -1820, -1756, -1692, -1628, -1564, -1500, -1436,
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|       -1372, -1308, -1244, -1180, -1116, -1052,  -988,  -924,
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|        -876,  -844,  -812,  -780,  -748,  -716,  -684,  -652,
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|        -620,  -588,  -556,  -524,  -492,  -460,  -428,  -396,
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|        -372,  -356,  -340,  -324,  -308,  -292,  -276,  -260,
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|        -244,  -228,  -212,  -196,  -180,  -164,  -148,  -132,
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|        -120,  -112,  -104,   -96,   -88,   -80,   -72,   -64,
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|         -56,   -48,   -40,   -32,   -24,   -16,    -8,     0,
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|       32124, 31100, 30076, 29052, 28028, 27004, 25980, 24956,
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|       23932, 22908, 21884, 20860, 19836, 18812, 17788, 16764,
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|       15996, 15484, 14972, 14460, 13948, 13436, 12924, 12412,
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|       11900, 11388, 10876, 10364,  9852,  9340,  8828,  8316,
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|        7932,  7676,  7420,  7164,  6908,  6652,  6396,  6140,
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|        5884,  5628,  5372,  5116,  4860,  4604,  4348,  4092,
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|        3900,  3772,  3644,  3516,  3388,  3260,  3132,  3004,
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|        2876,  2748,  2620,  2492,  2364,  2236,  2108,  1980,
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|        1884,  1820,  1756,  1692,  1628,  1564,  1500,  1436,
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|        1372,  1308,  1244,  1180,  1116,  1052,   988,   924,
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|         876,   844,   812,   780,   748,   716,   684,   652,
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|         620,   588,   556,   524,   492,   460,   428,   396,
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|         372,   356,   340,   324,   308,   292,   276,   260,
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|         244,   228,   212,   196,   180,   164,   148,   132,
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|         120,   112,   104,    96,    88,    80,    72,    64,
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|          56,    48,    40,    32,    24,    16,     8,     0
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| };
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| 
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| static int16_t ALawDecompressTable[256] =
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| {
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|      -5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736,
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|      -7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784,
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|      -2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368,
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|      -3776, -3648, -4032, -3904, -3264, -3136, -3520, -3392,
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|      -22016,-20992,-24064,-23040,-17920,-16896,-19968,-18944,
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|      -30208,-29184,-32256,-31232,-26112,-25088,-28160,-27136,
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|      -11008,-10496,-12032,-11520,-8960, -8448, -9984, -9472,
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|      -15104,-14592,-16128,-15616,-13056,-12544,-14080,-13568,
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|      -344,  -328,  -376,  -360,  -280,  -264,  -312,  -296,
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|      -472,  -456,  -504,  -488,  -408,  -392,  -440,  -424,
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|      -88,   -72,   -120,  -104,  -24,   -8,    -56,   -40,
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|      -216,  -200,  -248,  -232,  -152,  -136,  -184,  -168,
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|      -1376, -1312, -1504, -1440, -1120, -1056, -1248, -1184,
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|      -1888, -1824, -2016, -1952, -1632, -1568, -1760, -1696,
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|      -688,  -656,  -752,  -720,  -560,  -528,  -624,  -592,
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|      -944,  -912,  -1008, -976,  -816,  -784,  -880,  -848,
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|       5504,  5248,  6016,  5760,  4480,  4224,  4992,  4736,
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|       7552,  7296,  8064,  7808,  6528,  6272,  7040,  6784,
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|       2752,  2624,  3008,  2880,  2240,  2112,  2496,  2368,
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|       3776,  3648,  4032,  3904,  3264,  3136,  3520,  3392,
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|       22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944,
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|       30208, 29184, 32256, 31232, 26112, 25088, 28160, 27136,
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|       11008, 10496, 12032, 11520, 8960,  8448,  9984,  9472,
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|       15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568,
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|       344,   328,   376,   360,   280,   264,   312,   296,
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|       472,   456,   504,   488,   408,   392,   440,   424,
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|       88,    72,   120,   104,    24,     8,    56,    40,
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|       216,   200,   248,   232,   152,   136,   184,   168,
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|       1376,  1312,  1504,  1440,  1120,  1056,  1248,  1184,
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|       1888,  1824,  2016,  1952,  1632,  1568,  1760,  1696,
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|       688,   656,   752,   720,   560,   528,   624,   592,
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|       944,   912,  1008,   976,   816,   784,   880,   848
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| };
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| 
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| static void cs_reset (void *opaque)
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| {
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|     CSState *s = opaque;
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| 
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|     s->regs[Index_Address] = 0x40;
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|     s->regs[Index_Data]    = 0x00;
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|     s->regs[Status]        = 0x00;
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|     s->regs[PIO_Data]      = 0x00;
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| 
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|     s->dregs[Left_ADC_Input_Control]          = 0x00;
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|     s->dregs[Right_ADC_Input_Control]         = 0x00;
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|     s->dregs[Left_AUX1_Input_Control]         = 0x88;
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|     s->dregs[Right_AUX1_Input_Control]        = 0x88;
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|     s->dregs[Left_AUX2_Input_Control]         = 0x88;
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|     s->dregs[Right_AUX2_Input_Control]        = 0x88;
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|     s->dregs[Left_DAC_Output_Control]         = 0x80;
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|     s->dregs[Right_DAC_Output_Control]        = 0x80;
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|     s->dregs[FS_And_Playback_Data_Format]     = 0x00;
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|     s->dregs[Interface_Configuration]         = 0x08;
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|     s->dregs[Pin_Control]                     = 0x00;
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|     s->dregs[Error_Status_And_Initialization] = 0x00;
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|     s->dregs[MODE_And_ID]                     = 0x8a;
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|     s->dregs[Loopback_Control]                = 0x00;
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|     s->dregs[Playback_Upper_Base_Count]       = 0x00;
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|     s->dregs[Playback_Lower_Base_Count]       = 0x00;
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|     s->dregs[Alternate_Feature_Enable_I]      = 0x00;
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|     s->dregs[Alternate_Feature_Enable_II]     = 0x00;
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|     s->dregs[Left_Line_Input_Control]         = 0x88;
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|     s->dregs[Right_Line_Input_Control]        = 0x88;
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|     s->dregs[Timer_Low_Base]                  = 0x00;
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|     s->dregs[Timer_High_Base]                 = 0x00;
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|     s->dregs[RESERVED]                        = 0x00;
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|     s->dregs[Alternate_Feature_Enable_III]    = 0x00;
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|     s->dregs[Alternate_Feature_Status]        = 0x00;
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|     s->dregs[Version_Chip_ID]                 = 0xa0;
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|     s->dregs[Mono_Input_And_Output_Control]   = 0xa0;
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|     s->dregs[RESERVED_2]                      = 0x00;
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|     s->dregs[Capture_Data_Format]             = 0x00;
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|     s->dregs[RESERVED_3]                      = 0x00;
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|     s->dregs[Capture_Upper_Base_Count]        = 0x00;
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|     s->dregs[Capture_Lower_Base_Count]        = 0x00;
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| }
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| 
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| static void cs_audio_callback (void *opaque, int free)
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| {
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|     CSState *s = opaque;
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|     s->audio_free = free;
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| }
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| 
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| static void cs_reset_voices (CSState *s, uint32_t val)
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| {
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|     int xtal;
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|     struct audsettings as;
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| 
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| #ifdef DEBUG_XLAW
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|     if (val == 0 || val == 32)
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|         val = (1 << 4) | (1 << 5);
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| #endif
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| 
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|     xtal = val & 1;
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|     as.freq = freqs[xtal][(val >> 1) & 7];
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| 
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|     if (as.freq == -1) {
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|         lerr ("unsupported frequency (val=%#x)\n", val);
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|         goto error;
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|     }
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| 
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|     as.nchannels = (val & (1 << 4)) ? 2 : 1;
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|     as.endianness = 0;
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|     s->tab = NULL;
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| 
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|     switch ((val >> 5) & ((s->dregs[MODE_And_ID] & MODE2) ? 7 : 3)) {
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|     case 0:
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|         as.fmt = AUD_FMT_U8;
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|         s->shift = as.nchannels == 2;
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|         break;
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| 
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|     case 1:
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|         s->tab = MuLawDecompressTable;
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|         goto x_law;
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|     case 3:
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|         s->tab = ALawDecompressTable;
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|     x_law:
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|         as.fmt = AUD_FMT_S16;
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|         as.endianness = AUDIO_HOST_ENDIANNESS;
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|         s->shift = as.nchannels == 2;
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|         break;
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| 
 | |
|     case 6:
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|         as.endianness = 1;
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|     case 2:
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|         as.fmt = AUD_FMT_S16;
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|         s->shift = as.nchannels;
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|         break;
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| 
 | |
|     case 7:
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|     case 4:
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|         lerr ("attempt to use reserved format value (%#x)\n", val);
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|         goto error;
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| 
 | |
|     case 5:
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|         lerr ("ADPCM 4 bit IMA compatible format is not supported\n");
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|         goto error;
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|     }
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| 
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|     s->voice = AUD_open_out (
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|         &s->card,
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|         s->voice,
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|         "cs4231a",
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|         s,
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|         cs_audio_callback,
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|         &as
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|         );
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| 
 | |
|     if (s->dregs[Interface_Configuration] & PEN) {
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|         if (!s->dma_running) {
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|             DMA_hold_DREQ (s->dma);
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|             AUD_set_active_out (s->voice, 1);
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|             s->transferred = 0;
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|         }
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|         s->dma_running = 1;
 | |
|     }
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|     else {
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|         if (s->dma_running) {
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|             DMA_release_DREQ (s->dma);
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|             AUD_set_active_out (s->voice, 0);
 | |
|         }
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|         s->dma_running = 0;
 | |
|     }
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|     return;
 | |
| 
 | |
|  error:
 | |
|     if (s->dma_running) {
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|         DMA_release_DREQ (s->dma);
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|         AUD_set_active_out (s->voice, 0);
 | |
|     }
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| }
 | |
| 
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| static uint64_t cs_read (void *opaque, hwaddr addr, unsigned size)
 | |
| {
 | |
|     CSState *s = opaque;
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|     uint32_t saddr, iaddr, ret;
 | |
| 
 | |
|     saddr = addr;
 | |
|     iaddr = ~0U;
 | |
| 
 | |
|     switch (saddr) {
 | |
|     case Index_Address:
 | |
|         ret = s->regs[saddr] & ~0x80;
 | |
|         break;
 | |
| 
 | |
|     case Index_Data:
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|         if (!(s->dregs[MODE_And_ID] & MODE2))
 | |
|             iaddr = s->regs[Index_Address] & 0x0f;
 | |
|         else
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|             iaddr = s->regs[Index_Address] & 0x1f;
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| 
 | |
|         ret = s->dregs[iaddr];
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|         if (iaddr == Error_Status_And_Initialization) {
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|             /* keep SEAL happy */
 | |
|             if (s->aci_counter) {
 | |
|                 ret |= 1 << 5;
 | |
|                 s->aci_counter -= 1;
 | |
|             }
 | |
|         }
 | |
|         break;
 | |
| 
 | |
|     default:
 | |
|         ret = s->regs[saddr];
 | |
|         break;
 | |
|     }
 | |
|     dolog ("read %d:%d -> %d\n", saddr, iaddr, ret);
 | |
|     return ret;
 | |
| }
 | |
| 
 | |
| static void cs_write (void *opaque, hwaddr addr,
 | |
|                       uint64_t val64, unsigned size)
 | |
| {
 | |
|     CSState *s = opaque;
 | |
|     uint32_t saddr, iaddr, val;
 | |
| 
 | |
|     saddr = addr;
 | |
|     val = val64;
 | |
| 
 | |
|     switch (saddr) {
 | |
|     case Index_Address:
 | |
|         if (!(s->regs[Index_Address] & MCE) && (val & MCE)
 | |
|             && (s->dregs[Interface_Configuration] & (3 << 3)))
 | |
|             s->aci_counter = conf.aci_counter;
 | |
| 
 | |
|         s->regs[Index_Address] = val & ~(1 << 7);
 | |
|         break;
 | |
| 
 | |
|     case Index_Data:
 | |
|         if (!(s->dregs[MODE_And_ID] & MODE2))
 | |
|             iaddr = s->regs[Index_Address] & 0x0f;
 | |
|         else
 | |
|             iaddr = s->regs[Index_Address] & 0x1f;
 | |
| 
 | |
|         switch (iaddr) {
 | |
|         case RESERVED:
 | |
|         case RESERVED_2:
 | |
|         case RESERVED_3:
 | |
|             lwarn ("attempt to write %#x to reserved indirect register %d\n",
 | |
|                    val, iaddr);
 | |
|             break;
 | |
| 
 | |
|         case FS_And_Playback_Data_Format:
 | |
|             if (s->regs[Index_Address] & MCE) {
 | |
|                 cs_reset_voices (s, val);
 | |
|             }
 | |
|             else {
 | |
|                 if (s->dregs[Alternate_Feature_Status] & PMCE) {
 | |
|                     val = (val & ~0x0f) | (s->dregs[iaddr] & 0x0f);
 | |
|                     cs_reset_voices (s, val);
 | |
|                 }
 | |
|                 else {
 | |
|                     lwarn ("[P]MCE(%#x, %#x) is not set, val=%#x\n",
 | |
|                            s->regs[Index_Address],
 | |
|                            s->dregs[Alternate_Feature_Status],
 | |
|                            val);
 | |
|                     break;
 | |
|                 }
 | |
|             }
 | |
|             s->dregs[iaddr] = val;
 | |
|             break;
 | |
| 
 | |
|         case Interface_Configuration:
 | |
|             val &= ~(1 << 5);   /* D5 is reserved */
 | |
|             s->dregs[iaddr] = val;
 | |
|             if (val & PPIO) {
 | |
|                 lwarn ("PIO is not supported (%#x)\n", val);
 | |
|                 break;
 | |
|             }
 | |
|             if (val & PEN) {
 | |
|                 if (!s->dma_running) {
 | |
|                     cs_reset_voices (s, s->dregs[FS_And_Playback_Data_Format]);
 | |
|                 }
 | |
|             }
 | |
|             else {
 | |
|                 if (s->dma_running) {
 | |
|                     DMA_release_DREQ (s->dma);
 | |
|                     AUD_set_active_out (s->voice, 0);
 | |
|                     s->dma_running = 0;
 | |
|                 }
 | |
|             }
 | |
|             break;
 | |
| 
 | |
|         case Error_Status_And_Initialization:
 | |
|             lwarn ("attempt to write to read only register %d\n", iaddr);
 | |
|             break;
 | |
| 
 | |
|         case MODE_And_ID:
 | |
|             dolog ("val=%#x\n", val);
 | |
|             if (val & MODE2)
 | |
|                 s->dregs[iaddr] |= MODE2;
 | |
|             else
 | |
|                 s->dregs[iaddr] &= ~MODE2;
 | |
|             break;
 | |
| 
 | |
|         case Alternate_Feature_Enable_I:
 | |
|             if (val & TE)
 | |
|                 lerr ("timer is not yet supported\n");
 | |
|             s->dregs[iaddr] = val;
 | |
|             break;
 | |
| 
 | |
|         case Alternate_Feature_Status:
 | |
|             if ((s->dregs[iaddr] & PI) && !(val & PI)) {
 | |
|                 /* XXX: TI CI */
 | |
|                 qemu_irq_lower (s->pic);
 | |
|                 s->regs[Status] &= ~INT;
 | |
|             }
 | |
|             s->dregs[iaddr] = val;
 | |
|             break;
 | |
| 
 | |
|         case Version_Chip_ID:
 | |
|             lwarn ("write to Version_Chip_ID register %#x\n", val);
 | |
|             s->dregs[iaddr] = val;
 | |
|             break;
 | |
| 
 | |
|         default:
 | |
|             s->dregs[iaddr] = val;
 | |
|             break;
 | |
|         }
 | |
|         dolog ("written value %#x to indirect register %d\n", val, iaddr);
 | |
|         break;
 | |
| 
 | |
|     case Status:
 | |
|         if (s->regs[Status] & INT) {
 | |
|             qemu_irq_lower (s->pic);
 | |
|         }
 | |
|         s->regs[Status] &= ~INT;
 | |
|         s->dregs[Alternate_Feature_Status] &= ~(PI | CI | TI);
 | |
|         break;
 | |
| 
 | |
|     case PIO_Data:
 | |
|         lwarn ("attempt to write value %#x to PIO register\n", val);
 | |
|         break;
 | |
|     }
 | |
| }
 | |
| 
 | |
| static int cs_write_audio (CSState *s, int nchan, int dma_pos,
 | |
|                            int dma_len, int len)
 | |
| {
 | |
|     int temp, net;
 | |
|     uint8_t tmpbuf[4096];
 | |
| 
 | |
|     temp = len;
 | |
|     net = 0;
 | |
| 
 | |
|     while (temp) {
 | |
|         int left = dma_len - dma_pos;
 | |
|         int copied;
 | |
|         size_t to_copy;
 | |
| 
 | |
|         to_copy = audio_MIN (temp, left);
 | |
|         if (to_copy > sizeof (tmpbuf)) {
 | |
|             to_copy = sizeof (tmpbuf);
 | |
|         }
 | |
| 
 | |
|         copied = DMA_read_memory (nchan, tmpbuf, dma_pos, to_copy);
 | |
|         if (s->tab) {
 | |
|             int i;
 | |
|             int16_t linbuf[4096];
 | |
| 
 | |
|             for (i = 0; i < copied; ++i)
 | |
|                 linbuf[i] = s->tab[tmpbuf[i]];
 | |
|             copied = AUD_write (s->voice, linbuf, copied << 1);
 | |
|             copied >>= 1;
 | |
|         }
 | |
|         else {
 | |
|             copied = AUD_write (s->voice, tmpbuf, copied);
 | |
|         }
 | |
| 
 | |
|         temp -= copied;
 | |
|         dma_pos = (dma_pos + copied) % dma_len;
 | |
|         net += copied;
 | |
| 
 | |
|         if (!copied) {
 | |
|             break;
 | |
|         }
 | |
|     }
 | |
| 
 | |
|     return net;
 | |
| }
 | |
| 
 | |
| static int cs_dma_read (void *opaque, int nchan, int dma_pos, int dma_len)
 | |
| {
 | |
|     CSState *s = opaque;
 | |
|     int copy, written;
 | |
|     int till = -1;
 | |
| 
 | |
|     copy = s->voice ? (s->audio_free >> (s->tab != NULL)) : dma_len;
 | |
| 
 | |
|     if (s->dregs[Pin_Control] & IEN) {
 | |
|         till = (s->dregs[Playback_Lower_Base_Count]
 | |
|             | (s->dregs[Playback_Upper_Base_Count] << 8)) << s->shift;
 | |
|         till -= s->transferred;
 | |
|         copy = audio_MIN (till, copy);
 | |
|     }
 | |
| 
 | |
|     if ((copy <= 0) || (dma_len <= 0)) {
 | |
|         return dma_pos;
 | |
|     }
 | |
| 
 | |
|     written = cs_write_audio (s, nchan, dma_pos, dma_len, copy);
 | |
| 
 | |
|     dma_pos = (dma_pos + written) % dma_len;
 | |
|     s->audio_free -= (written << (s->tab != NULL));
 | |
| 
 | |
|     if (written == till) {
 | |
|         s->regs[Status] |= INT;
 | |
|         s->dregs[Alternate_Feature_Status] |= PI;
 | |
|         s->transferred = 0;
 | |
|         qemu_irq_raise (s->pic);
 | |
|     }
 | |
|     else {
 | |
|         s->transferred += written;
 | |
|     }
 | |
| 
 | |
|     return dma_pos;
 | |
| }
 | |
| 
 | |
| static int cs4231a_pre_load (void *opaque)
 | |
| {
 | |
|     CSState *s = opaque;
 | |
| 
 | |
|     if (s->dma_running) {
 | |
|         DMA_release_DREQ (s->dma);
 | |
|         AUD_set_active_out (s->voice, 0);
 | |
|     }
 | |
|     s->dma_running = 0;
 | |
|     return 0;
 | |
| }
 | |
| 
 | |
| static int cs4231a_post_load (void *opaque, int version_id)
 | |
| {
 | |
|     CSState *s = opaque;
 | |
| 
 | |
|     if (s->dma_running && (s->dregs[Interface_Configuration] & PEN)) {
 | |
|         s->dma_running = 0;
 | |
|         cs_reset_voices (s, s->dregs[FS_And_Playback_Data_Format]);
 | |
|     }
 | |
|     return 0;
 | |
| }
 | |
| 
 | |
| static const VMStateDescription vmstate_cs4231a = {
 | |
|     .name = "cs4231a",
 | |
|     .version_id = 1,
 | |
|     .minimum_version_id = 1,
 | |
|     .minimum_version_id_old = 1,
 | |
|     .pre_load = cs4231a_pre_load,
 | |
|     .post_load = cs4231a_post_load,
 | |
|     .fields      = (VMStateField []) {
 | |
|         VMSTATE_UINT32_ARRAY (regs, CSState, CS_REGS),
 | |
|         VMSTATE_BUFFER (dregs, CSState),
 | |
|         VMSTATE_INT32 (dma_running, CSState),
 | |
|         VMSTATE_INT32 (audio_free, CSState),
 | |
|         VMSTATE_INT32 (transferred, CSState),
 | |
|         VMSTATE_INT32 (aci_counter, CSState),
 | |
|         VMSTATE_END_OF_LIST ()
 | |
|     }
 | |
| };
 | |
| 
 | |
| static const MemoryRegionOps cs_ioport_ops = {
 | |
|     .read = cs_read,
 | |
|     .write = cs_write,
 | |
|     .impl = {
 | |
|         .min_access_size = 1,
 | |
|         .max_access_size = 1,
 | |
|     }
 | |
| };
 | |
| 
 | |
| static int cs4231a_initfn (ISADevice *dev)
 | |
| {
 | |
|     CSState *s = DO_UPCAST (CSState, dev, dev);
 | |
| 
 | |
|     isa_init_irq (dev, &s->pic, s->irq);
 | |
| 
 | |
|     memory_region_init_io (&s->ioports, &cs_ioport_ops, s, "cs4231a", 4);
 | |
|     isa_register_ioport (dev, &s->ioports, s->port);
 | |
| 
 | |
|     DMA_register_channel (s->dma, cs_dma_read, s);
 | |
| 
 | |
|     qemu_register_reset (cs_reset, s);
 | |
|     cs_reset (s);
 | |
| 
 | |
|     AUD_register_card ("cs4231a", &s->card);
 | |
|     return 0;
 | |
| }
 | |
| 
 | |
| int cs4231a_init (ISABus *bus)
 | |
| {
 | |
|     isa_create_simple (bus, "cs4231a");
 | |
|     return 0;
 | |
| }
 | |
| 
 | |
| static Property cs4231a_properties[] = {
 | |
|     DEFINE_PROP_HEX32  ("iobase",  CSState, port, 0x534),
 | |
|     DEFINE_PROP_UINT32 ("irq",     CSState, irq,  9),
 | |
|     DEFINE_PROP_UINT32 ("dma",     CSState, dma,  3),
 | |
|     DEFINE_PROP_END_OF_LIST (),
 | |
| };
 | |
| 
 | |
| static void cs4231a_class_initfn (ObjectClass *klass, void *data)
 | |
| {
 | |
|     DeviceClass *dc = DEVICE_CLASS (klass);
 | |
|     ISADeviceClass *ic = ISA_DEVICE_CLASS (klass);
 | |
|     ic->init = cs4231a_initfn;
 | |
|     dc->desc = "Crystal Semiconductor CS4231A";
 | |
|     dc->vmsd = &vmstate_cs4231a;
 | |
|     dc->props = cs4231a_properties;
 | |
| }
 | |
| 
 | |
| static const TypeInfo cs4231a_info = {
 | |
|     .name          = "cs4231a",
 | |
|     .parent        = TYPE_ISA_DEVICE,
 | |
|     .instance_size = sizeof (CSState),
 | |
|     .class_init    = cs4231a_class_initfn,
 | |
| };
 | |
| 
 | |
| static void cs4231a_register_types (void)
 | |
| {
 | |
|     type_register_static (&cs4231a_info);
 | |
| }
 | |
| 
 | |
| type_init (cs4231a_register_types)
 |