From patchwork Wed Nov 23 11:44:54 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [v3,04/38] atapi: kill MODE SENSE(6), fix MODE SENSE(10) From: Stefan Hajnoczi X-Patchwork-Id: 127289 Message-Id: <1322048728-26061-5-git-send-email-stefanha@linux.vnet.ibm.com> To: Cc: Kevin Wolf , Paolo Bonzini , Marcelo Tosatti Date: Wed, 23 Nov 2011 11:44:54 +0000 From: Paolo Bonzini Mode page 2A of emulated ATAPI DVD-ROM should have page length 0x14 like SCSI CD-ROM, rather than 0x12. Mode page length is off by 8, as it should contain the length of the payload after the first two bytes. MODE SENSE(6) should be thrown out of ATAPI DVD-ROM emulation. It is not specified in the ATAPI list of MMC-2, and MMC-5 prescribes to use MODE SENSE(10). Anyway, its implementation is wrong. Reported-by: Thomas Schmitt Signed-off-by: Paolo Bonzini Signed-off-by: Kevin Wolf --- hw/ide/atapi.c | 20 ++++++++------------ 1 files changed, 8 insertions(+), 12 deletions(-) diff --git a/hw/ide/atapi.c b/hw/ide/atapi.c index 1fed359..8af1cfd 100644 --- a/hw/ide/atapi.c +++ b/hw/ide/atapi.c @@ -695,12 +695,7 @@ static void cmd_mode_sense(IDEState *s, uint8_t *buf) int action, code; int max_len; - if (buf[0] == GPCMD_MODE_SENSE_10) { - max_len = ube16_to_cpu(buf + 7); - } else { - max_len = buf[4]; - } - + max_len = ube16_to_cpu(buf + 7); action = buf[2] >> 6; code = buf[2] & 0x3f; @@ -708,7 +703,7 @@ static void cmd_mode_sense(IDEState *s, uint8_t *buf) case 0: /* current values */ switch(code) { case MODE_PAGE_R_W_ERROR: /* error recovery */ - cpu_to_ube16(&buf[0], 16 + 6); + cpu_to_ube16(&buf[0], 16 - 2); buf[2] = 0x70; buf[3] = 0; buf[4] = 0; @@ -727,7 +722,7 @@ static void cmd_mode_sense(IDEState *s, uint8_t *buf) ide_atapi_cmd_reply(s, 16, max_len); break; case MODE_PAGE_AUDIO_CTL: - cpu_to_ube16(&buf[0], 24 + 6); + cpu_to_ube16(&buf[0], 24 - 2); buf[2] = 0x70; buf[3] = 0; buf[4] = 0; @@ -746,7 +741,7 @@ static void cmd_mode_sense(IDEState *s, uint8_t *buf) ide_atapi_cmd_reply(s, 24, max_len); break; case MODE_PAGE_CAPABILITIES: - cpu_to_ube16(&buf[0], 28 + 6); + cpu_to_ube16(&buf[0], 30 - 2); buf[2] = 0x70; buf[3] = 0; buf[4] = 0; @@ -755,7 +750,7 @@ static void cmd_mode_sense(IDEState *s, uint8_t *buf) buf[7] = 0; buf[8] = MODE_PAGE_CAPABILITIES; - buf[9] = 28 - 10; + buf[9] = 30 - 10; buf[10] = 0x3b; /* read CDR/CDRW/DVDROM/DVDR/DVDRAM */ buf[11] = 0x00; @@ -777,7 +772,9 @@ static void cmd_mode_sense(IDEState *s, uint8_t *buf) buf[25] = 0; buf[26] = 0; buf[27] = 0; - ide_atapi_cmd_reply(s, 28, max_len); + buf[28] = 0; + buf[29] = 0; + ide_atapi_cmd_reply(s, 30, max_len); break; default: goto error_cmd; @@ -1043,7 +1040,6 @@ static const struct { [ 0x00 ] = { cmd_test_unit_ready, CHECK_READY }, [ 0x03 ] = { cmd_request_sense, ALLOW_UA }, [ 0x12 ] = { cmd_inquiry, ALLOW_UA }, - [ 0x1a ] = { cmd_mode_sense, /* (6) */ 0 }, [ 0x1b ] = { cmd_start_stop_unit, 0 }, /* [1] */ [ 0x1e ] = { cmd_prevent_allow_medium_removal, 0 }, [ 0x25 ] = { cmd_read_cdvd_capacity, CHECK_READY },