scsi_destroy_pkt(9F) Kernel Functions for Drivers scsi_destroy_pkt(9F)NAME
scsi_destroy_pkt - free an allocated SCSI packet and its DMA resource
SYNOPSIS
#include <sys/scsi/scsi.h>
void scsi_destroy_pkt(struct scsi_pkt *pktp);
INTERFACE LEVEL
Solaris DDI specific (Solaris DDI).
PARAMETERS
pktp Pointer to a scsi_pkt(9S) structure.
DESCRIPTION
scsi_destroy_pkt() releases all necessary resources, typically at the end of an I/O transfer. The data is synchronized to memory, then the
DMA resources are deallocated and pktp is freed.
CONTEXT
scsi_destroy_pkt() may be called from user or interrupt context.
EXAMPLES
Example 1: Releasing resources.
scsi_destroy_pkt(un->un_rqs);
SEE ALSO tran_destroy_pkt(9E), scsi_init_pkt(9F), scsi_pkt(9S)
Writing Device Drivers
SunOS 5.10 30 Aug 1995 scsi_destroy_pkt(9F)
Check Out this Related Man Page
scsi_sync_pkt(9F) Kernel Functions for Drivers scsi_sync_pkt(9F)NAME
scsi_sync_pkt - synchronize CPU and I/O views of memory
SYNOPSIS
#include <sys/scsi/scsi.h>
void scsi_sync_pkt(struct scsi_pkt *pktp);
INTERFACE LEVEL
Solaris DDI specific (Solaris DDI).
PARAMETERS
pktp Pointer to a scsi_pkt(9S) structure.
DESCRIPTION
scsi_sync_pkt() is used to selectively synchronize a CPU's or device's view of the data associated with the SCSI packet that has been
mapped for I/O. This may involve operations such as flushes of CPU or I/O caches, as well as other more complex operations such as stalling
until hardware write buffers have drained.
This function need only be called under certain circumstances. When a SCSI packet is mapped for I/O using scsi_init_pkt(9F) and destroyed
using scsi_destroy_pkt(9F), then an implicit scsi_sync_pkt() will be performed. However, if the memory object has been modified by either
the device or a CPU after the mapping by scsi_init_pkt(9F), then a call to scsi_sync_pkt() is required.
If the same scsi_pkt is reused for a data transfer from memory to a device, then scsi_sync_pkt() must be called before calling scsi_trans-
port(9F). If the same packet is reused for a data transfer from a device to memory scsi_sync_pkt() must be called after the completion of
the packet but before accessing the data in memory.
CONTEXT
scsi_sync_pkt() may be called from user or interrupt context.
SEE ALSO tran_sync_pkt(9E), ddi_dma_sync(9F), scsi_destroy_pkt(9F), scsi_init_pkt(9F), scsi_transport(9F), scsi_pkt(9S)
Writing Device Drivers
SunOS 5.10 25 Feb 1994 scsi_sync_pkt(9F)
The UNIX and Linux Forums have a number of active members that have published books or papers related to shell programming and scripting. You can check out their publications here:
Link Removed
Please note, as you can imagine, our forum experts can be quite busy! You will get a response... (0 Replies)
Emergency UNIX and Linux Support !! Help Me! Forum (Request Urgent Help)
README FIRST: How to Request Emergency or Urgent Help:
You may post emergency work-related questions in the emergency forum. To post in this forum you will need to use your Bits. All questions answered on a "best... (0 Replies)
Homework Help:
On Posting Questions:
Any and all high school and undergraduate homework assignments or textbook style exercises for which you are seeking assistance are to be posted only in our Homework & Coursework Questions area--not in blogs, visitor messages, PMs, or the main technical... (0 Replies)
Dear Forum Members,
The UNIX and Linux Forums are working directly with the Red Cross to provide ad banners on our site to support Earthquake and Tsunami Relief in Japan. Registered users do not see these banners. However, if you wish to contribute directly on behalf of yourself and the... (8 Replies)
How to Use Code Tags in The UNIX and Linux Forums
Developer: This video tutorial was created by scott for forum users. Everyone should use code tags when posting code and command line logic in the forums.
cPF45jjWe7Q
A full list of BB codes is available here. (8 Replies)
RULES OF THE UNIX AND LINUX FORUMS
For the latest version of the community rules (the official community rules page), please visit here.
No flames, shouting (all caps), sarcasm, bullying, profanity or arrogant posts.
No negative comments about others or impolite remarks. Be patient. No... (1 Reply)
I see lot of ad-hoc shell scripts in our servers which don't have a shebang at the beginning .
Does this mean that it will run on any shell ?
Is it a good practice to create scripts (even ad-hoc ones) without shebang ? (16 Replies)
Having spent a lot of time over the past year taking a legacy vBulletin site (this forum) and making the site responsive on mobile; I've happy with the results; but it will soon be time to move on.
Basically, at our core, we are a LAMP (Linux, Apache2, MySQL and PHP) site, and vBulletin was... (6 Replies)
Here are some answers to some of the recent questions I have received about UNIX.COM. So, I thought I would take time to answer them here in this post:
Is it expected that the original poster "thank" everyone who responds to his / her discussion thread?
It is always a good practice in all... (7 Replies)
By special request, and long overdue, I have updated our "code tags" video and so now we have:
How to Use Code Tags and Format Posts @UNIX.com in 4K
https://youtu.be/4BuPvWJV__k (3 Replies)
Here is a quick EOY report for 2019.
2019 has been a year of "downward trend reversal" for UNIX.com. In fact, if we compare total Google search impressions from the peak days in December 2019 to the peak days in mid December 2018, traffic is up 43% percent. That is a very respectable growth... (0 Replies)