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Mote that how the pad bytes can be divided in half and used by either

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the target mode code or outer layers.

Increase cd_tagval to be 32 bits since it will have to now carry 16
bits of parallel SCSI ATIO handle as well as a normal tag (if any).
This commit is contained in:
Matt Jacob 2001-03-14 04:13:30 +00:00
parent e2ec5cf0f9
commit 75f7d77928
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=74230
1 changed files with 8 additions and 4 deletions
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12
sys/dev/isp/isp_tpublic.h
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@ -101,7 +101,9 @@ typedef struct {
* layer maintains a port database, for example).
*
* The cd_tagtype field specifies what kind of command tag has been
* sent with the command. The cd_tagval is the tag's value.
* sent with the command. The cd_tagval is the tag's value (low 16
* bits). It also contains (in the upper 16 bits) any command handle.
*
*
* N.B.: when the MD layer sends this command to outside software
* the outside software likely *MUST* return the same cd_tagval that
@ -175,7 +177,9 @@ typedef struct {
* The tag cd_error is to communicate between the MD layer and outer software
* the current error conditions.
*
* The tag cd_reserved pads out the structure to 128 bytes.
* The tag cd_reserved pads out the structure to 128 bytes. The first
* half of the pad area is reserved to the MD layer, and the second half
* may be used by outer layers, for scratch purposes.
*/
#ifndef _LP64
@ -206,7 +210,7 @@ typedef struct tmd_cmd {
u_int64_t cd_lun; /* logical unit */
u_int8_t cd_bus; /* bus */
u_int8_t cd_tagtype; /* tag type */
u_int16_t cd_tagval; /* tag value */
u_int32_t cd_tagval; /* tag value */
u_int8_t cd_cdb[ATIO_CDBLEN]; /* Command */
u_int8_t cd_lflags; /* flags lower level sets */
u_int8_t cd_hflags; /* flags higher level sets */
@ -266,7 +270,7 @@ typedef enum {
* When the HBA is enabled for receiving commands, one may show up
* without notice. When that happens, the Qlogic target mode driver
* gets a tmd_cmd_t, fills it with the info that just arrived, and
* calls the outer layer with a QIN_TMD_START code and pointer to
* calls the outer layer with a QOUT_TMD_START code and pointer to
* the tmd_cmd_t.
*
* The outer layer decodes the command, fetches data, prepares stuff,