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ATAPI now updates the request length if the remaining block to be transferred is smaller, fixes BeOS 5.0 on ATAPI.

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OBattler
2019-10-20 21:16:04 +02:00
parent e967603e59
commit 9b56b9d056
1 changed files with 7 additions and 4 deletions
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11
src/disk/hdc_ide.c
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@@ -9,13 +9,13 @@
* Implementation of the IDE emulation for hard disks and ATAPI * Implementation of the IDE emulation for hard disks and ATAPI
* CD-ROM devices. * CD-ROM devices.
* *
* Version: @(#)hdc_ide.c 1.0.60 2019/02/10 * Version: @(#)hdc_ide.c 1.0.61 2019/10/20
* *
* Authors: Sarah Walker, <http://pcem-emulator.co.uk/> * Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
* Miran Grca, <mgrca8@gmail.com> * Miran Grca, <mgrca8@gmail.com>
* *
* Copyright 2008-2018 Sarah Walker. * Copyright 2008-2019 Sarah Walker.
* Copyright 2016-2018 Miran Grca. * Copyright 2016-2019 Miran Grca.
*/ */
#define __USE_LARGEFILE64 #define __USE_LARGEFILE64
#define _LARGEFILE_SOURCE #define _LARGEFILE_SOURCE
@@ -949,8 +949,11 @@ ide_atapi_pio_request(ide_t *ide, uint8_t out)
/* If less than (packet length) bytes are remaining, update packet length /* If less than (packet length) bytes are remaining, update packet length
accordingly. */ accordingly. */
if ((dev->packet_len - dev->pos) < (dev->max_transfer_len)) if ((dev->packet_len - dev->pos) < (dev->max_transfer_len)) {
dev->max_transfer_len = dev->packet_len - dev->pos; dev->max_transfer_len = dev->packet_len - dev->pos;
/* Also update the request length so the host knows how many bytes to transfer. */
dev->request_length = dev->max_transfer_len;
}
ide_log("CD-ROM %i: Packet length %i, request length %i\n", dev->id, dev->packet_len, ide_log("CD-ROM %i: Packet length %i, request length %i\n", dev->id, dev->packet_len,
dev->max_transfer_len); dev->max_transfer_len);