diff options
| author | David Strahan <David.Strahan@microchip.com> | 2026-07-22 17:03:59 -0500 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2026-07-28 21:56:35 -0400 |
| commit | c64b2ab2ff516a94109020e8caea605ae09ea6d9 (patch) | |
| tree | adc9cb84d8c63553f0fb7c56b85c4bbde108d082 /include/uapi/linux | |
| parent | 225548863f0a2350c6f34231ca56710c3dd1a5d5 (diff) | |
scsi: smartpqi: Add support for CCISS_BIG_PASSTHRU ioctl
Add pqi_big_passthru_ioctl() to handle CCISS_BIG_PASSTHRU ioctl
requests. The existing passthru ioctl uses a 16-bit integer for the I/O
buffer size, limiting transfers to 64KB. The big passthru ioctl uses
BIG_IOCTL_Command_struct which stores the buffer size as a 32-bit integer,
allowing larger transfers required by some management utilities.
Add CCISS_BIG_PASSTHRU_SUPPORTED to uapi/linux/cciss_ioctl.h and return 0
from pqi_ioctl() to advertise driver support. Userspace tools can send
this ioctl to probe whether the driver supports CCISS_BIG_PASSTHRU before
issuing it.
Co-developed-by: Mike McGowen <mike.mcgowen@microchip.com>
Signed-off-by: Mike McGowen <mike.mcgowen@microchip.com>
Signed-off-by: David Strahan <david.strahan@microchip.com>
Acked-by: Don Brace <don.brace@microchip.com>
Link: https://lore.kernel.org/linux-scsi/20260722220401.6357-3-david.strahan@microchip.com/
Link: https://lore.kernel.org/linux-scsi/20260722220401.6357-1-david.strahan@microchip.com/
Link: https://patch.msgid.link/20260722220401.6357-3-david.strahan@microchip.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/uapi/linux')
| -rw-r--r-- | include/uapi/linux/cciss_ioctl.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/cciss_ioctl.h b/include/uapi/linux/cciss_ioctl.h index 562230199461..8295f1bf3bf3 100644 --- a/include/uapi/linux/cciss_ioctl.h +++ b/include/uapi/linux/cciss_ioctl.h @@ -85,5 +85,6 @@ typedef struct _LogvolInfo_struct{ #define CCISS_RESCANDISK _IO(CCISS_IOC_MAGIC, 16) #define CCISS_GETLUNINFO _IOR(CCISS_IOC_MAGIC, 17, LogvolInfo_struct) #define CCISS_BIG_PASSTHRU _IOWR(CCISS_IOC_MAGIC, 18, BIG_IOCTL_Command_struct) +#define CCISS_BIG_PASSTHRU_SUPPORTED _IO(CCISS_IOC_MAGIC, 19) #endif /* _UAPICCISS_IOCTLH */ |