ide: implement stub for audio control/volume read
This implements the audio control or volume read support as needed by some systems. A Conectiva Parolin system required this to detect an IDE device as CD-ROM, through the CDVOLREAD ioctl. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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@ -1269,6 +1269,23 @@ static void ide_atapi_cmd(IDEState *s)
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buf[15] = 0x00;
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ide_atapi_cmd_reply(s, 16, max_len);
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break;
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case GPMODE_AUDIO_CTL_PAGE:
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cpu_to_ube16(&buf[0], 24 + 6);
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buf[2] = 0x70;
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buf[3] = 0;
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buf[4] = 0;
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buf[5] = 0;
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buf[6] = 0;
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buf[7] = 0;
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/* Fill with CDROM audio volume */
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buf[17] = 0;
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buf[19] = 0;
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buf[21] = 0;
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buf[23] = 0;
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ide_atapi_cmd_reply(s, 24, max_len);
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break;
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case GPMODE_CAPABILITIES_PAGE:
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cpu_to_ube16(&buf[0], 28 + 6);
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buf[2] = 0x70;
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