From cf60ccc3306ca4726cbd286a156863863b00ff4f Mon Sep 17 00:00:00 2001 From: Akihiko Odaki Date: Fri, 24 Jun 2022 23:50:37 +0900 Subject: cutils: Introduce bundle mechanism Developers often run QEMU without installing. The bundle mechanism allows to look up files which should be present in installation even in such a situation. It is a general mechanism and can find any files in the installation tree. The build tree will have a new directory, qemu-bundle, to represent what files the installation tree would have for reference by the executables. Note that it abandons compatibility with Windows older than 8. The extended support for the prior version, 7 ended more than 2 years ago, and it is unlikely that someone would like to run the latest QEMU on such an old system. Signed-off-by: Akihiko Odaki Suggested-by: Paolo Bonzini Message-Id: <20220624145039.49929-3-akihiko.odaki@gmail.com> Signed-off-by: Paolo Bonzini --- include/qemu/cutils.h | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/qemu/cutils.h b/include/qemu/cutils.h index d3e532b..92c436d 100644 --- a/include/qemu/cutils.h +++ b/include/qemu/cutils.h @@ -224,9 +224,21 @@ const char *qemu_get_exec_dir(void); * @dir: the directory (typically a `CONFIG_*DIR` variable) to be relocated. * * Returns a path for @dir that uses the directory of the running executable - * as the prefix. For example, if `bindir` is `/usr/bin` and @dir is - * `/usr/share/qemu`, the function will append `../share/qemu` to the - * directory that contains the running executable and return the result. + * as the prefix. + * + * When a directory named `qemu-bundle` exists in the directory of the running + * executable, the path to the directory will be prepended to @dir. For + * example, if the directory of the running executable is `/qemu/build` @dir + * is `/usr/share/qemu`, the result will be + * `/qemu/build/qemu-bundle/usr/share/qemu`. The directory is expected to exist + * in the build tree. + * + * Otherwise, the directory of the running executable will be used as the + * prefix and it appends the relative path from `bindir` to @dir. For example, + * if the directory of the running executable is `/opt/qemu/bin`, `bindir` is + * `/usr/bin` and @dir is `/usr/share/qemu`, the result will be + * `/opt/qemu/bin/../share/qemu`. + * * The returned string should be freed by the caller. */ char *get_relocated_path(const char *dir); -- cgit v1.1 From 09d37867627a86f23248c138f380bd38bada4073 Mon Sep 17 00:00:00 2001 From: Mark Cave-Ayland Date: Wed, 22 Jun 2022 11:53:02 +0100 Subject: scsi-disk: add MODE_PAGE_APPLE_VENDOR quirk for Macintosh One of the mechanisms MacOS uses to identify CDROM drives compatible with MacOS is to send a custom MODE SELECT command for page 0x30 to the drive. The response to this is a hard-coded manufacturer string which must match in order for the CDROM to be usable within MacOS. Add an implementation of the MODE SELECT page 0x30 response guarded by a newly defined SCSI_DISK_QUIRK_MODE_PAGE_APPLE_VENDOR quirk bit so that CDROM drives attached to non-Apple machines function exactly as before. Signed-off-by: Mark Cave-Ayland Reviewed-by: Laurent Vivier Message-Id: <20220622105314.802852-3-mark.cave-ayland@ilande.co.uk> Signed-off-by: Paolo Bonzini --- include/hw/scsi/scsi.h | 3 +++ include/scsi/constants.h | 1 + 2 files changed, 4 insertions(+) (limited to 'include') diff --git a/include/hw/scsi/scsi.h b/include/hw/scsi/scsi.h index 1ffb367..e090ea1 100644 --- a/include/hw/scsi/scsi.h +++ b/include/hw/scsi/scsi.h @@ -226,4 +226,7 @@ SCSIDevice *scsi_device_get(SCSIBus *bus, int channel, int target, int lun); /* scsi-generic.c. */ extern const SCSIReqOps scsi_generic_req_ops; +/* scsi-disk.c */ +#define SCSI_DISK_QUIRK_MODE_PAGE_APPLE_VENDOR 0 + #endif diff --git a/include/scsi/constants.h b/include/scsi/constants.h index 2a32c08..891aa0f 100644 --- a/include/scsi/constants.h +++ b/include/scsi/constants.h @@ -234,6 +234,7 @@ #define MODE_PAGE_FAULT_FAIL 0x1c #define MODE_PAGE_TO_PROTECT 0x1d #define MODE_PAGE_CAPABILITIES 0x2a +#define MODE_PAGE_APPLE_VENDOR 0x30 #define MODE_PAGE_ALLS 0x3f /* Not in Mt. Fuji, but in ATAPI 2.6 -- deprecated now in favor * of MODE_PAGE_SENSE_POWER */ -- cgit v1.1 From f43c2b94cd1764ba0a47fc1f848681b0e89d4892 Mon Sep 17 00:00:00 2001 From: Mark Cave-Ayland Date: Wed, 22 Jun 2022 11:53:04 +0100 Subject: scsi-disk: add SCSI_DISK_QUIRK_MODE_SENSE_ROM_USE_DBD quirk for Macintosh During SCSI bus enumeration A/UX sends a MODE SENSE command to the CDROM with the DBD bit unset and expects the response to include a block descriptor. As per the latest SCSI documentation, QEMU currently force-disables the block descriptor for CDROM devices but the A/UX driver expects the requested block descriptor to be returned. If the block descriptor is not returned in the response then A/UX becomes confused, since the block descriptor returned in the MODE SENSE response is used to generate a subsequent MODE SELECT command which is then invalid. Add a new SCSI_DISK_QUIRK_MODE_SENSE_ROM_USE_DBD quirk to allow this behaviour to be enabled as required. Note that an additional workaround is required for the previous SCSI_DISK_QUIRK_MODE_PAGE_APPLE_VENDOR quirk which must never return a block descriptor even though the DBD bit is left unset. Signed-off-by: Mark Cave-Ayland Message-Id: <20220622105314.802852-5-mark.cave-ayland@ilande.co.uk> Signed-off-by: Paolo Bonzini --- include/hw/scsi/scsi.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/hw/scsi/scsi.h b/include/hw/scsi/scsi.h index e090ea1..845d057 100644 --- a/include/hw/scsi/scsi.h +++ b/include/hw/scsi/scsi.h @@ -228,5 +228,6 @@ extern const SCSIReqOps scsi_generic_req_ops; /* scsi-disk.c */ #define SCSI_DISK_QUIRK_MODE_PAGE_APPLE_VENDOR 0 +#define SCSI_DISK_QUIRK_MODE_SENSE_ROM_USE_DBD 1 #endif -- cgit v1.1 From 09274de1f70e0773b95f865ef4980599e51aa67d Mon Sep 17 00:00:00 2001 From: Mark Cave-Ayland Date: Wed, 22 Jun 2022 11:53:06 +0100 Subject: scsi-disk: add SCSI_DISK_QUIRK_MODE_PAGE_VENDOR_SPECIFIC_APPLE quirk for Macintosh Both MacOS and A/UX make use of vendor-specific MODE SELECT commands with PF=0 to identify SCSI devices: - MacOS sends a MODE SELECT command with PF=0 for the MODE_PAGE_VENDOR_SPECIFIC (0x0) mode page containing 2 bytes before initialising a disk - A/UX (installed on disk) sends a MODE SELECT command with PF=0 during SCSI bus enumeration, and gets stuck in an infinite loop if it fails Add a new SCSI_DISK_QUIRK_MODE_PAGE_VENDOR_SPECIFIC_APPLE quirk to allow both PF=0 MODE SELECT commands and implement a MODE_PAGE_VENDOR_SPECIFIC (0x0) mode page which is compatible with MacOS. Signed-off-by: Mark Cave-Ayland Message-Id: <20220622105314.802852-7-mark.cave-ayland@ilande.co.uk> Signed-off-by: Paolo Bonzini --- include/hw/scsi/scsi.h | 1 + include/scsi/constants.h | 1 + 2 files changed, 2 insertions(+) (limited to 'include') diff --git a/include/hw/scsi/scsi.h b/include/hw/scsi/scsi.h index 845d057..011cb84 100644 --- a/include/hw/scsi/scsi.h +++ b/include/hw/scsi/scsi.h @@ -229,5 +229,6 @@ extern const SCSIReqOps scsi_generic_req_ops; /* scsi-disk.c */ #define SCSI_DISK_QUIRK_MODE_PAGE_APPLE_VENDOR 0 #define SCSI_DISK_QUIRK_MODE_SENSE_ROM_USE_DBD 1 +#define SCSI_DISK_QUIRK_MODE_PAGE_VENDOR_SPECIFIC_APPLE 2 #endif diff --git a/include/scsi/constants.h b/include/scsi/constants.h index 891aa0f..6a8bad5 100644 --- a/include/scsi/constants.h +++ b/include/scsi/constants.h @@ -225,6 +225,7 @@ #define TYPE_NO_LUN 0x7f /* Mode page codes for mode sense/set */ +#define MODE_PAGE_VENDOR_SPECIFIC 0x00 #define MODE_PAGE_R_W_ERROR 0x01 #define MODE_PAGE_HD_GEOMETRY 0x04 #define MODE_PAGE_FLEXIBLE_DISK_GEOMETRY 0x05 -- cgit v1.1 From 389e18eb9aa4877f33326afa426643769185d014 Mon Sep 17 00:00:00 2001 From: Mark Cave-Ayland Date: Wed, 22 Jun 2022 11:53:09 +0100 Subject: scsi-disk: add SCSI_DISK_QUIRK_MODE_PAGE_TRUNCATED quirk for Macintosh When A/UX configures the CDROM device it sends a truncated MODE SELECT request for page 1 (MODE_PAGE_R_W_ERROR) which is only 6 bytes in length rather than 10. This seems to be due to bug in Apple's code which calculates the CDB message length incorrectly. The work at [1] suggests that this truncated request is accepted on real hardware whereas in QEMU it generates an INVALID_PARAM_LEN sense code which causes A/UX to get stuck in a loop retrying the command in an attempt to succeed. Alter the mode page request length check so that truncated requests are allowed if the SCSI_DISK_QUIRK_MODE_PAGE_TRUNCATED quirk is enabled, whilst also adding a trace event to enable the condition to be detected. [1] https://68kmla.org/bb/index.php?threads/scsi2sd-project-anyone-interested.29040/page-7#post-316444 Signed-off-by: Mark Cave-Ayland Message-Id: <20220622105314.802852-10-mark.cave-ayland@ilande.co.uk> Signed-off-by: Paolo Bonzini --- include/hw/scsi/scsi.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/hw/scsi/scsi.h b/include/hw/scsi/scsi.h index 011cb84..e284e3a 100644 --- a/include/hw/scsi/scsi.h +++ b/include/hw/scsi/scsi.h @@ -230,5 +230,6 @@ extern const SCSIReqOps scsi_generic_req_ops; #define SCSI_DISK_QUIRK_MODE_PAGE_APPLE_VENDOR 0 #define SCSI_DISK_QUIRK_MODE_SENSE_ROM_USE_DBD 1 #define SCSI_DISK_QUIRK_MODE_PAGE_VENDOR_SPECIFIC_APPLE 2 +#define SCSI_DISK_QUIRK_MODE_PAGE_TRUNCATED 3 #endif -- cgit v1.1